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STATISTICS FOR JAPAN

STATISTICS FOR JAPAN


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-01-24   PAGE 313

 STATION - TOYOHIRA RIVER AT SHIRAIKAWA             STATION NO. 080001
 COUNTRY - JAPAN                                    DEPTH(M)       5.5
 LOCATION - OCT. 2  LAT. 42/57/48  LONG. 141/16/22  ELEVATION(M) 149.5
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-02 TO 1993-12-27

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B         CN     NO3NO2
                             COND                 TOTAL                      
                            02041      02061      05107      06606      07105
                            us/cm      deg C     mg/L B    mg/L Cn     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          5          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      157        157          1          0         21
 MEAN                        122.        8.2        0.1      0.010       0.14
 MINIMUM                      54.        1.8                 0.010       0.07
 DATE OF MINIMUM       1993-06-01 1992-03-04            1991-01-16 1992-05-13
 10TH PERCENTILE              78.        2.7                             0.08
 MEDIAN                      123.        7.3                 0.010       0.14
 90TH PERCENTILE             169.       15.4                             0.18
 MAXIMUM                     221.       19.0                 0.010       0.25
 DATE OF MAXIMUM       1991-04-03 1991-08-26            1992-01-07 1993-04-06
 STANDARD DEVIATION           33.        5.1                 0.000       0.04




                            NO2-N      NO3-N        NH3        NH3    PERCENT
                                                                       DO SAT
                            07207      07313      07555      07556      08001
                           mg/L N     mg/L N     mg/L N     mg/L N    PERCENT


 NO. OF L-FLAGGED VALUES        4          0         90         64          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         15          1          2         20
 MEAN                        0.00       0.17       0.02       0.03       105.
 MINIMUM                     0.00       0.12       0.02       0.02        96.
 DATE OF MINIMUM       1991-01-16 1991-07-03 1992-04-06 1991-05-16 1992-12-16
 10TH PERCENTILE             0.00       0.12       0.02       0.02        98.
 MEDIAN                      0.00       0.15       0.02       0.02       105.
 90TH PERCENTILE             0.00       0.19       0.02       0.04       110.
 MAXIMUM                     0.00       0.40       0.03       0.04       117.
 DATE OF MAXIMUM       1991-07-03 1991-04-03 1993-10-04 1991-05-07 1992-09-16
 STANDARD DEVIATION          0.00       0.07       0.00       0.01         5.




                               O2        BOD          F          F        ALK
                             DISS                  DISS       DISS      TOTAL
                            08101      08201      09104      09107      10102
                          mg/L O2    mg/L O2     mg/L F     mg/L F       mg/L


 NO. OF L-FLAGGED VALUES        0          3          2          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         31          3          2         35
 MEAN                        12.1         2.        0.0        0.1      18.26
 MINIMUM                      8.3         0.        0.0        0.0      11.00
 DATE OF MINIMUM       1991-09-09 1991-12-10 1991-01-16 1993-01-19 1991-05-16
 10TH PERCENTILE              9.6         1.                            13.00
 MEDIAN                      12.6         2.        0.0        0.1      19.00
 90TH PERCENTILE             13.9         2.                            21.00
 MAXIMUM                     14.4         3.        0.0        0.1      27.00
 DATE OF MAXIMUM       1991-12-10 1993-01-19 1991-07-03 1993-07-13 1991-04-03
 STANDARD DEVIATION           1.6         1.        0.0        0.1       3.15




                               pH   SUSP SOL         Na         Mg         Al
                                     105 DEG       DISS       DISS      TOTAL
                            10302      10401      11115      12102      13002
                         pH UNITS       mg/L    mg/L Na    mg/L Mg    mg/L Al


 NO. OF L-FLAGGED VALUES        0          7          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      157         27          2          2          3
 MEAN                         7.0         3.        10.         2.      0.070
 MINIMUM                      6.8         0.                                 
 DATE OF MINIMUM       1992-05-06 1991-11-11                                 
 10TH PERCENTILE              6.9         1.                                 
 MEDIAN                       7.0         2.                                 
 90TH PERCENTILE              7.1         7.                                 
 MAXIMUM                      7.2        22.                                 
 DATE OF MAXIMUM       1993-10-04 1993-05-11                                 
 STANDARD DEVIATION           0.1         4.                                 




                          P ORTHO   SULPHATE   SULPHATE         Cl          K
                            TOTAL                             DISS       DISS
                            15205      16306      16309      17204      19102
                           mg/L P   mg/L SO4   mg/L SO4    mg/L Cl     mg/L K


 NO. OF L-FLAGGED VALUES        5          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          7          4         35          2
 MEAN                       0.015        15.        12.        18.        2.1
 MINIMUM                    0.003        12.        11.         7.           
 DATE OF MINIMUM       1991-07-03 1992-10-14 1993-07-13 1993-11-09           
 10TH PERCENTILE            0.007                              10.           
 MEDIAN                     0.010        13.        12.        16.           
 90TH PERCENTILE            0.030                              28.           
 MAXIMUM                    0.030        23.        15.        33.           
 DATE OF MAXIMUM       1991-06-11 1991-04-03 1993-04-06 1991-04-03           
 STANDARD DEVIATION         0.009         4.         2.         7.           




                               Ca         Cr         Mn         Mn         Fe
                             DISS      TOTAL      TOTAL       DISS      TOTAL
                            20115      24002      25004      25104      26002
                          mg/L Ca    mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0         12          0          5          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0        156        113        156
 MEAN                       6.700      0.014       0.04       0.03       0.24
 MINIMUM                               0.001       0.01       0.01       0.04
 DATE OF MINIMUM                  1993-04-06 1991-06-24 1991-05-20 1993-09-07
 10TH PERCENTILE                       0.001       0.02       0.01       0.11
 MEDIAN                                0.020       0.04       0.02       0.18
 90TH PERCENTILE                       0.020       0.06       0.04       0.38
 MAXIMUM                               0.020       0.13       0.11       2.30
 DATE OF MAXIMUM                  1993-01-19 1993-01-19 1993-01-19 1991-04-30
 STANDARD DEVIATION                    0.009       0.02       0.01       0.22




                               Ni         Cu         Zn         As         As
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            28001      29006      30004      33003      33007
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        2         12          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         11         14         12
 MEAN                       0.001      0.010      0.011      0.012      0.012
 MINIMUM                               0.010      0.005      0.005      0.004
 DATE OF MINIMUM                  1991-01-16 1991-01-16 1992-05-13 1993-02-16
 10TH PERCENTILE                       0.010      0.005      0.005      0.005
 MEDIAN                                0.010      0.011      0.011      0.010
 90TH PERCENTILE                       0.010      0.016      0.018      0.016
 MAXIMUM                               0.010      0.018      0.026      0.020
 DATE OF MAXIMUM                  1993-10-20 1993-10-20 1992-08-12 1993-07-13
 STANDARD DEVIATION                    0.000      0.004      0.006      0.005




                         COLIFORM   FAEC COL         Cd         Cd         Cd
                            TOTAL                 TOTAL      TOTAL       DISS
                            36001      36011      48001      48002      48101
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          4          8          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      149         36          0          0          0
 MEAN                        552.        53.      0.004      0.007      0.005
 MINIMUM                       1.         4.      0.001      0.005           
 DATE OF MINIMUM       1991-07-22 1992-01-07 1993-12-06 1991-01-16           
 10TH PERCENTILE             107.         7.                                 
 MEDIAN                      330.        24.      0.005      0.005           
 90TH PERCENTILE            1300.       110.                                 
 MAXIMUM                    4600.       490.      0.005      0.020           
 DATE OF MAXIMUM       1991-07-29 1991-12-10 1993-10-20 1991-04-03           
 STANDARD DEVIATION          667.        87.      0.002      0.005           




                               Ba         Hg         Pb    BENZENE       INST
                            TOTAL       DISS      TOTAL                DISCHG
                            80011      80111      82002      95100      97160
                          ug/L Hg    ug/L Hg    mg/L Pb       ug/L       m3/S


 NO. OF L-FLAGGED VALUES       12          1         17          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0        157
 MEAN                       0.383      0.500      0.010        0.5       24.5
 MINIMUM                    0.001                 0.005                   9.2
 DATE OF MINIMUM       1992-01-07            1993-12-06            1991-10-14
 10TH PERCENTILE            0.010                 0.008                  11.9
 MEDIAN                     0.500                 0.010                  17.8
 90TH PERCENTILE            0.500                 0.010                  50.9
 MAXIMUM                    0.500                 0.010                 112.7
 DATE OF MAXIMUM       1991-10-14            1993-10-20            1991-05-16
 STANDARD DEVIATION         0.211                 0.001                  18.8





 STATION - URAWA PURIFICATION PLANT                 STATION NO. 080002
 COUNTRY - JAPAN                                    DEPTH(M)     236.5
 LOCATION - OCT. 2  LAT. 35/51/20  LONG. 139/39/40  ELEVATION(M) -17.1
 REGIONAL CENTRE - WPRA                             WATER TYPE   GROUNDWATER

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-23 TO 1991-03-12

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO2-N      NO3-N        NH3
                             COND                                            
                            02041      02061      07207      07313      07551
                            us/cm      deg C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          3          0          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3          3          0          3          0
 MEAN                        116.       16.0       0.01       0.52       0.02
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               O2          F        ALK         pH         Na
                             DISS       DISS      TOTAL                  DISS
                            08101      09110      10102      10301      11105
                          mg/L O2     mg/L F       mg/L   pH UNITS    mg/L Na


 NO. OF L-FLAGGED VALUES        0          3          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3          0          3          3          3
 MEAN                         6.5        0.1      51.40        7.5        12.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Mg         Cl       PCBS          K         Ca
                             DISS       DISS                  DISS       DISS
                            12103      17204      18165      19105      20101
                          mg/L Mg    mg/L Cl       ug/L     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3          3          0          3          3
 MEAN                          3.         5.      0.500        1.0     10.667
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          



                               Mn         Fe   FAEC COL         Cd         Ba
                            TOTAL      TOTAL                 TOTAL      TOTAL
                            25004      26002      36011      48002      80011
                          mg/L Mn    mg/L Fe   No/100ml    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        3          3          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          3          0          0
 MEAN                        0.01       0.01         0.      0.005      0.500
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Pb       INST
                            TOTAL     DISCHG
                            82002      97160
                          mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        1          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        0          3
 MEAN                       0.010        0.0
 MINIMUM                                    
 DATE OF MINIMUM                            
 10TH PERCENTILE                            
 MEDIAN                                     
 90TH PERCENTILE                            
 MAXIMUM                                    
 DATE OF MAXIMUM                            
 STANDARD DEVIATION                         





 STATION - TONE RIVER AT TONE-OZEKI                 STATION NO. 080003
 COUNTRY - JAPAN                                    DEPTH(M)       2.1
 LOCATION - OCT. 2  LAT. 36/10/50  LONG. 139/28/30  ELEVATION(M)  22.4
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-16 TO 1993-12-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                           SUM OF     SUM OF       ELEC       TEMP          B
                          CATIONS     ANIONS       COND                 TOTAL
                            00120      00125      02041      02061      05009
                            MEQ/L      MEQ/L      us/cm      deg C     mg/L B


 NO. OF L-FLAGGED VALUES        0          0          0          0          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          5         36         36          1
 MEAN                       1.930      1.407       228.       14.5        0.1
 MINIMUM                    1.123      0.834       132.        4.0        0.1
 DATE OF MINIMUM       1993-02-16 1993-05-11 1993-06-15 1991-01-16 1993-02-16
 10TH PERCENTILE                                   153.        5.9           
 MEDIAN                     1.983      1.478       238.       14.8        0.1
 90TH PERCENTILE                                   279.       22.5           
 MAXIMUM                    2.784      1.981       320.       26.0        0.1
 DATE OF MAXIMUM       1993-08-10 1992-12-08 1992-11-10 1993-07-26 1993-11-09
 STANDARD DEVIATION         0.666      0.445        48.        6.3        0.0




                                B          B        TOC   ORG CARB   ORG CARB
                            TOTAL       DISS                  PART       DISS
                            05107      05109      06001      06076      06101
                           mg/L B     mg/L B     mg/L C     ug/g C     mg/L C


 NO. OF L-FLAGGED VALUES        3          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         11          1          6
 MEAN                         0.1        0.1         2.      1.619        1.3
 MINIMUM                                             1.                   1.0
 DATE OF MINIMUM                             1991-09-11            1993-11-09
 10TH PERCENTILE                                     1.                      
 MEDIAN                                              2.                   1.2
 90TH PERCENTILE                                     2.                      
 MAXIMUM                                             2.                   1.8
 DATE OF MAXIMUM                             1991-06-18            1993-02-16
 STANDARD DEVIATION                                  0.                   0.3




                          PHENOLS         CN   CHLORO A     N KJEL     NO3NO2
                                                                             
                            06532      06606      06711      07001      07105
                             mg/L    mg/L Cn       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES       11          3          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         19          3         21
 MEAN                       5.000      0.005     0.0081        2.5       1.97
 MINIMUM                    5.000                0.0023                  0.78
 DATE OF MINIMUM       1992-04-14            1991-10-22            1993-06-15
 10TH PERCENTILE            5.000                0.0025                  1.01
 MEDIAN                     5.000                0.0047                  1.90
 90TH PERCENTILE            5.000                0.0104                  2.64
 MAXIMUM                    5.000                0.0480                  3.07
 DATE OF MAXIMUM       1993-12-07            1993-05-11            1993-10-19
 STANDARD DEVIATION         0.000                0.0101                  0.65




                            NO2-N      NO3-N     ORG. N        NH3        NH3
                                                   DISS                      
                            07207      07313      07403      07551      07556
                           mg/L N     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0         10          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         12         11         21         15
 MEAN                        0.06       2.23        0.2       0.21       0.24
 MINIMUM                     0.03       1.20        0.1       0.04       0.09
 DATE OF MINIMUM       1991-08-20 1991-06-18 1992-05-12 1992-09-16 1991-07-16
 10TH PERCENTILE             0.03       1.22        0.1       0.05       0.09
 MEDIAN                      0.06       2.00        0.1       0.15       0.17
 90TH PERCENTILE             0.08       3.21        0.3       0.37       0.41
 MAXIMUM                     0.08       4.40        0.6       0.61       0.52
 DATE OF MAXIMUM       1991-12-03 1991-10-22 1992-11-10 1992-10-20 1991-03-12
 STANDARD DEVIATION          0.02       0.97        0.1       0.15       0.14




                          PERCENT         O2        BOD        COD          F
                           DO SAT       DISS                             DISS
                            08001      08101      08201      08301      09104
                          PERCENT    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          1          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         22         33         12         13
 MEAN                         96.        9.2         1.         3.        0.1
 MINIMUM                      91.        4.6         1.         2.        0.0
 DATE OF MINIMUM       1992-06-16 1992-12-08 1991-04-17 1991-12-03 1991-02-13
 10TH PERCENTILE                         7.5         1.         2.        0.0
 MEDIAN                       93.        9.2         1.         3.        0.1
 90TH PERCENTILE                        11.7         2.         4.        0.2
 MAXIMUM                     111.       12.8         5.         4.        0.2
 DATE OF MAXIMUM       1993-02-16 1993-02-16 1993-07-26 1991-08-20 1992-08-18
 STANDARD DEVIATION            7.        1.8         1.         1.        0.1




                              ALK         pH         pH         pH   SUSP SOL
                            TOTAL                                     105 DEG
                            10102      10300      10301      10302      10401
                             mg/L   pH UNITS   pH UNITS   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36         21         12          3         36
 MEAN                       30.86        7.1        7.1        7.1        12.
 MINIMUM                    16.50        6.9        7.1                    2.
 DATE OF MINIMUM       1993-05-11 1992-10-20 1991-05-21            1991-11-19
 10TH PERCENTILE            18.90        7.0        7.1                    2.
 MEDIAN                     31.00        7.1        7.1                    6.
 90TH PERCENTILE            38.50        7.2        7.2                   16.
 MAXIMUM                    45.50        7.4        7.2                  149.
 DATE OF MAXIMUM       1991-07-16 1993-02-16 1991-07-16            1993-07-26
 STANDARD DEVIATION          6.75        0.1        0.0                   25.



                               Na         Na        SAR         Mg         Mg
                             DISS       DISS                  DISS       DISS
                            11105      11115      11201      12103      12115
                          mg/L Na    mg/L Na   REL.UNIT    mg/L Mg    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          5          5         12          5
 MEAN                         11.        12.      3.621         4.         4.
 MINIMUM                       8.         7.      2.241         3.         2.
 DATE OF MINIMUM       1991-04-17 1993-05-11 1993-05-11 1991-05-21 1993-02-16
 10TH PERCENTILE               8.                               3.           
 MEDIAN                       11.        10.      3.896         4.         4.
 90TH PERCENTILE              13.                               5.           
 MAXIMUM                      14.        17.      4.641         6.         5.
 DATE OF MAXIMUM       1991-11-19 1993-11-09 1993-11-09 1991-11-19 1993-11-09
 STANDARD DEVIATION            2.         4.      1.072         1.         1.




                               Al         Al         Si         Si    P ORTHO
                            TOTAL       DISS   REACTIVE   REACTIVE      TOTAL
                            13002      13102      14019      14101      15205
                          mg/L Al    mg/L Al   mg/LSiO2   mg/LSiO2     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          5          7         12         15
 MEAN                       0.348      0.073      16.49      21.42      0.047
 MINIMUM                    0.160      0.044       8.73      18.00      0.016
 DATE OF MINIMUM       1992-06-16 1993-11-09 1992-12-08 1991-05-21 1991-05-21
 10TH PERCENTILE                                             18.00      0.020
 MEDIAN                     0.270      0.073      16.00      21.50      0.042
 90TH PERCENTILE                                             24.00      0.068
 MAXIMUM                    0.826      0.100      26.00      25.00      0.085
 DATE OF MAXIMUM       1993-05-11 1992-12-08 1993-11-09 1991-10-22 1992-01-22
 STANDARD DEVIATION         0.236      0.020       6.87       2.43      0.019




                                P    P TOTAL   SULPHATE   SULPHATE         Cl
                            TOTAL       DISS                             DISS
                            15405      15417      16302      16306      17204
                           mg/L P     mg/L P   mg/L SO4   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         21          7         13         36
 MEAN                       0.108      0.051        35.        34.        16.
 MINIMUM                    0.039      0.021        25.        23.         8.
 DATE OF MINIMUM       1993-02-16 1993-05-11 1993-05-11 1991-04-17 1991-05-21
 10TH PERCENTILE            0.062      0.025                   23.         9.
 MEDIAN                     0.089      0.053        31.        35.        16.
 90TH PERCENTILE            0.125      0.064                   42.        23.
 MAXIMUM                    0.417      0.072        48.        52.        29.
 DATE OF MAXIMUM       1993-07-26 1992-07-21 1992-12-08 1991-11-19 1992-12-08
 STANDARD DEVIATION         0.071      0.013         8.         8.         5.




                              DDT    LINDANE     ALDRIN   DIELDRIN       PCBS
                            TOTAL                                            
                            18002      18070      18130      18150      18165
                             ug/L       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        7          3          7          7          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.001      0.001      0.010      0.073      0.043
 MINIMUM                    0.001                 0.001      0.001      0.001
 DATE OF MINIMUM       1991-05-21            1991-05-21 1991-05-21 1992-05-12
 10TH PERCENTILE                                                             
 MEDIAN                     0.001                 0.001      0.001      0.050
 90TH PERCENTILE                                                             
 MAXIMUM                    0.001                 0.050      0.500      0.050
 DATE OF MAXIMUM       1992-10-20            1992-05-12 1992-05-12 1992-02-18
 STANDARD DEVIATION         0.000                 0.018      0.188      0.019




                                K          K         Ca         Ca         Cr
                             DISS       DISS       DISS       DISS      TOTAL
                            19102      19103      20101      20115      24002
                           mg/L K     mg/L K    mg/L Ca    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        1          0          0          0         13
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          5         12          5          0
 MEAN                         2.2        3.7     16.833     17.050      0.003
 MINIMUM                      0.5        2.6     12.000      8.700      0.003
 DATE OF MINIMUM       1992-01-22 1993-05-11 1991-05-21 1993-02-16 1991-02-13
 10TH PERCENTILE              0.7                12.000                 0.003
 MEDIAN                       2.5        3.2     16.500     17.000      0.003
 90TH PERCENTILE              2.7                21.000                 0.003
 MAXIMUM                      3.2        5.1     23.000     21.835      0.003
 DATE OF MAXIMUM       1991-11-19 1992-12-08 1991-11-19 1993-11-09 1992-03-17
 STANDARD DEVIATION           0.7        1.0      3.486      5.247      0.000




                               Cr         Cr         Mn         Mn         Mn
                            TOTAL       DISS      TOTAL      TOTAL       DISS
                            24009      24111      25004      25010      25104
                          mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        5          4          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          1         14          7          1
 MEAN                       0.005      0.005       0.05       0.06       0.06
 MINIMUM                    0.005      0.005       0.03       0.02           
 DATE OF MINIMUM       1992-06-16 1992-12-08 1991-06-18 1992-08-18           
 10TH PERCENTILE                                   0.03                      
 MEDIAN                     0.005      0.005       0.06       0.04           
 90TH PERCENTILE                                   0.07                      
 MAXIMUM                    0.005      0.005       0.09       0.16           
 DATE OF MAXIMUM       1993-11-09 1993-11-09 1991-02-13 1993-05-11           
 STANDARD DEVIATION         0.000      0.000       0.02       0.05           




                               Mn         Fe         Fe         Fe         Fe
                             DISS      TOTAL      TOTAL      TOTAL       DISS
                            25109      26002      26004      26009      26104
                          mg/L Mn    mg/L Fe    mg/L Fe    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5         14          1          7          0
 MEAN                        0.05       0.30       0.33       0.46       0.01
 MINIMUM                     0.02       0.16                  0.12           
 DATE OF MINIMUM       1993-08-10 1991-01-16            1993-02-16           
 10TH PERCENTILE                        0.16                                 
 MEDIAN                      0.04       0.31                  0.30           
 90TH PERCENTILE                        0.46                                 
 MAXIMUM                     0.09       0.53                  1.86           
 DATE OF MAXIMUM       1993-05-11 1991-10-22            1993-05-11           
 STANDARD DEVIATION          0.03       0.12                  0.62           




                               Fe         Ni         Ni         Cu         Cu
                             DISS      TOTAL       DISS      TOTAL      TOTAL
                            26109      28009      28109      29006      29009
                          mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu


 NO. OF L-FLAGGED VALUES        1          4          3         10          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          3          2          3          3
 MEAN                        0.02      0.005      0.005      0.011      0.005
 MINIMUM                     0.01      0.005      0.004      0.010      0.004
 DATE OF MINIMUM       1992-12-08 1992-06-16 1992-12-08 1991-02-13 1992-06-16
 10TH PERCENTILE                                             0.010           
 MEDIAN                      0.01      0.005      0.005      0.010      0.004
 90TH PERCENTILE                                             0.010           
 MAXIMUM                     0.03      0.006      0.005      0.020      0.010
 DATE OF MAXIMUM       1993-11-09 1993-05-11 1993-11-09 1991-07-16 1993-05-11
 STANDARD DEVIATION          0.01      0.000      0.000      0.003      0.002




                               Cu         Zn         Zn         Zn         As
                             DISS      TOTAL      TOTAL       DISS      TOTAL
                            29109      30004      30009      30109      33003
                          mg/L Cu    mg/L Zn    mg/L Zn    mg/L Zn    mg/L As


 NO. OF L-FLAGGED VALUES        4          0          1          1         13
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         13          6          4          0
 MEAN                       0.004      0.010      0.013      0.008      0.001
 MINIMUM                    0.004      0.005      0.005      0.005      0.001
 DATE OF MINIMUM       1992-12-08 1991-11-19 1992-08-18 1993-08-10 1991-02-13
 10TH PERCENTILE                       0.005                            0.001
 MEDIAN                     0.004      0.009      0.010      0.008      0.001
 90TH PERCENTILE                       0.014                            0.001
 MAXIMUM                    0.004      0.016      0.027      0.009      0.001
 DATE OF MAXIMUM       1993-11-09 1991-07-16 1993-05-11 1993-11-09 1991-10-22
 STANDARD DEVIATION         0.000      0.004      0.008      0.002      0.000




                               As         As         As         Se         Se
                            TOTAL      TOTAL       DISS      TOTAL      TOTAL
                            33008      33009      33108      34002      34008
                          mg/L As    mg/L As    mg/L As    mg/L Se    mg/L Se


 NO. OF L-FLAGGED VALUES        6          0          4         12          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          1          1          0          0
 MEAN                       0.005      0.011      0.006      0.002      0.002
 MINIMUM                    0.005                 0.005      0.002      0.002
 DATE OF MINIMUM       1992-06-16            1992-12-08 1991-04-17 1992-06-16
 10TH PERCENTILE                                             0.002           
 MEDIAN                     0.005                 0.005      0.002      0.002
 90TH PERCENTILE                                             0.002           
 MAXIMUM                    0.005                 0.009      0.002      0.002
 DATE OF MAXIMUM       1993-08-10            1993-11-09 1992-03-17 1993-11-09
 STANDARD DEVIATION         0.000                 0.002      0.000      0.000




                               Se   COLIFORM   FAEC COL         Cd         Cd
                             DISS      TOTAL                 TOTAL      TOTAL
                            34108      36001      36011      48002      48011
                          mg/L Se   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        5          0          0         13          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         35         28          0          0
 MEAN                       0.002    4.4E+04      1931.      0.005      0.005
 MINIMUM                    0.002    4.9E+02        20.      0.005      0.005
 DATE OF MINIMUM       1992-12-08 1992-01-22 1993-02-16 1991-02-13 1992-06-16
 10TH PERCENTILE                     1.8E+03        45.      0.005           
 MEDIAN                     0.002    7.9E+03       490.      0.005      0.005
 90TH PERCENTILE                     4.9E+04      5650.      0.005           
 MAXIMUM                    0.002    9.2E+05     13000.      0.005      0.005
 DATE OF MAXIMUM       1993-11-09 1993-07-26 1992-10-20 1992-03-17 1993-11-09
 STANDARD DEVIATION         0.000    1.5E+05      3131.      0.000      0.000




                               Cd         Ba         Hg         Pb         Pb
                             DISS      TOTAL       DISS      TOTAL      TOTAL
                            48109      80011      80111      82002      82009
                          mg/L Cd    ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        5         20          5         13          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.005      0.500      0.500      0.010      0.005
 MINIMUM                    0.005      0.500      0.500      0.010      0.005
 DATE OF MINIMUM       1992-12-08 1991-02-13 1992-12-08 1991-02-13 1992-06-16
 10TH PERCENTILE                       0.500                 0.010           
 MEDIAN                     0.005      0.500      0.500      0.010      0.005
 90TH PERCENTILE                       0.500                 0.010           
 MAXIMUM                    0.005      0.500      0.500      0.010      0.005
 DATE OF MAXIMUM       1993-11-09 1993-11-09 1993-11-09 1992-03-17 1993-11-09
 STANDARD DEVIATION         0.000      0.000      0.000      0.000      0.000



                               Pb    BENZENE       INST
                             DISS                DISCHG
                            82109      95100      97160
                          mg/L Pb       ug/L       m3/S


 NO. OF L-FLAGGED VALUES        5          3          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          0         36
 MEAN                       0.005        0.5      194.4
 MINIMUM                    0.005                  98.0
 DATE OF MINIMUM       1992-12-08            1993-03-16
 10TH PERCENTILE                                  110.0
 MEDIAN                     0.005                 180.0
 90TH PERCENTILE                                  283.0
 MAXIMUM                    0.005                 590.0
 DATE OF MAXIMUM       1993-11-09            1992-10-20
 STANDARD DEVIATION         0.000                  90.9





 STATION - SUGINAMI FILTRATION PLANT                STATION NO. 080004
 COUNTRY - JAPAN                                    DEPTH(M)      14.0
 LOCATION - OCT. 2  LAT. 35/43/30  LONG. 139/35/30  ELEVATION(M)  42.6
 REGIONAL CENTRE - WPRA                             WATER TYPE   GROUNDWATER

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-02-06 TO 1993-11-10

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                           SUM OF     SUM OF       ELEC       TEMP          B
                          CATIONS     ANIONS       COND                 TOTAL
                            00120      00125      02041      02061      05009
                            MEQ/L      MEQ/L      us/cm      deg C     mg/L B


 NO. OF L-FLAGGED VALUES        0          0          0          0          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          5         12         12          0
 MEAN                       1.826      1.829       244.       16.6        0.1
 MINIMUM                    0.750      1.386       101.       15.4        0.1
 DATE OF MINIMUM       1993-02-03 1992-11-04 1993-08-04 1991-05-08 1993-02-03
 10TH PERCENTILE                                   129.       15.4           
 MEDIAN                     2.219      1.558       256.       16.2        0.1
 90TH PERCENTILE                                   267.       16.5           
 MAXIMUM                    2.374      2.383       268.       23.0        0.1
 DATE OF MAXIMUM       1993-11-10 1993-05-12 1993-11-10 1992-08-05 1993-11-10
 STANDARD DEVIATION         0.703      0.466        46.        2.0        0.0




                                B          B          B          B    PHENOLS
                            TOTAL      TOTAL       DISS       DISS           
                            05090      05107      05109      05190      06532
                           mg/L B     mg/L B     mg/L B     mg/L B       mg/L


 NO. OF L-FLAGGED VALUES        1          3          1          1          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                         0.1        0.1        0.1        0.1      5.000
 MINIMUM                                                                5.000
 DATE OF MINIMUM                                                   1992-05-06
 10TH PERCENTILE                                                             
 MEDIAN                                                                 5.000
 90TH PERCENTILE                                                             
 MAXIMUM                                                                5.000
 DATE OF MAXIMUM                                                   1993-11-10
 STANDARD DEVIATION                                                     0.000




                               CN     NO3NO2      NO2-N      NO3-N     ORG. N
                                                                         DISS
                            06606      07105      07207      07313      07403
                          mg/L Cn     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        5          0          3          0          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          7          1          5          0
 MEAN                       0.005       9.30       0.00       9.74        0.1
 MINIMUM                    0.005       8.60       0.00       8.70        0.1
 DATE OF MINIMUM       1991-02-06 1992-11-04 1991-05-08 1991-05-08 1992-05-06
 10TH PERCENTILE                                                             
 MEDIAN                     0.005       9.10       0.00      10.00        0.1
 90TH PERCENTILE                                                             
 MAXIMUM                    0.005      10.00       0.00      10.00        0.1
 DATE OF MAXIMUM       1992-02-05 1993-11-10 1992-02-05 1992-02-05 1993-11-10
 STANDARD DEVIATION         0.000       0.57       0.00       0.58        0.0




                              NH3        NH3    PERCENT         O2        BOD
                                                 DO SAT       DISS           
                            07551      07556      08001      08101      08201
                           mg/L N     mg/L N    PERCENT    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        6          5          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          7         10          1
 MEAN                        0.02       0.02        83.        7.7         1.
 MINIMUM                     0.01       0.02        78.        7.2           
 DATE OF MINIMUM       1992-11-04 1991-02-06 1993-11-10 1991-05-08           
 10TH PERCENTILE                                               7.2           
 MEDIAN                      0.02       0.02        83.        7.8           
 90TH PERCENTILE                                               8.0           
 MAXIMUM                     0.02       0.02        86.        8.0           
 DATE OF MAXIMUM       1992-08-05 1992-02-05 1992-08-05 1992-11-04           
 STANDARD DEVIATION          0.00       0.00         3.        0.3           




                                F          F        ALK         pH         pH
                             DISS       DISS      TOTAL                      
                            09104      09105      10102      10300      10302
                           mg/L F     mg/L F       mg/L   pH UNITS   pH UNITS


 NO. OF L-FLAGGED VALUES        8          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          0         12          7          5
 MEAN                         0.1        0.0      38.75        6.1        6.1
 MINIMUM                      0.0                 35.00        6.0        6.0
 DATE OF MINIMUM       1991-02-06            1993-05-12 1992-08-05 1991-02-06
 10TH PERCENTILE              0.0                 35.50                      
 MEDIAN                       0.1                 38.50        6.1        6.1
 90TH PERCENTILE              0.1                 40.35                      
 MAXIMUM                      0.1                 41.00        6.2        6.4
 DATE OF MAXIMUM       1993-11-10            1991-08-07 1993-11-10 1991-05-08
 STANDARD DEVIATION           0.0                  1.62        0.1        0.2




                         SUSP SOL         Na         Na        SAR         Mg
                          105 DEG       DISS       DISS                  DISS
                            10401      11105      11115      11201      12103
                             mg/L    mg/L Na    mg/L Na   REL.UNIT    mg/L Mg


 NO. OF L-FLAGGED VALUES        4          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          4          5          5          5
 MEAN                         64.        10.        10.      1.585         9.
 MINIMUM                       1.         9.         4.      0.464         8.
 DATE OF MINIMUM       1993-02-03 1992-02-05 1993-02-03 1993-05-12 1991-11-06
 10TH PERCENTILE                                                             
 MEDIAN                        1.        10.        10.      1.170         9.
 90TH PERCENTILE                                                             
 MAXIMUM                     255.        11.        14.      3.714        10.
 DATE OF MAXIMUM       1993-08-04 1991-11-06 1993-11-10 1993-11-10 1992-02-05
 STANDARD DEVIATION          127.         1.         4.      1.329         1.




                               Mg         Al         Al         Si         Si
                             DISS      TOTAL       DISS   REACTIVE   REACTIVE
                            12115      13002      13102      14019      14101
                          mg/L Mg    mg/L Al    mg/L Al   mg/LSiO2   mg/LSiO2


 NO. OF L-FLAGGED VALUES        0          1          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          6          4          7          4
 MEAN                          8.      0.054      0.020      23.29      23.75
 MINIMUM                       3.      0.010      0.010      17.00      20.00
 DATE OF MINIMUM       1993-02-03 1993-08-04 1992-11-04 1992-11-04 1991-11-06
 10TH PERCENTILE                                                             
 MEDIAN                       10.      0.050      0.010      26.00      22.50
 90TH PERCENTILE                                                             
 MAXIMUM                      11.      0.120      0.050      26.00      30.00
 DATE OF MAXIMUM       1993-08-04 1992-11-04 1993-05-12 1993-11-10 1992-02-05
 STANDARD DEVIATION            3.      0.038      0.017       3.64       4.50




                          P ORTHO   SULPHATE   SULPHATE         Cl        DDT
                            TOTAL                             DISS      TOTAL
                            15205      16302      16306      17204      18002
                           mg/L P   mg/L SO4   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          7          5         12          0
 MEAN                       0.008        14.        11.        20.      0.001
 MINIMUM                    0.003        10.         9.        19.      0.001
 DATE OF MINIMUM       1991-08-07 1992-11-04 1991-05-08 1991-05-08 1991-05-08
 10TH PERCENTILE                                               19.           
 MEDIAN                     0.007        12.        10.        21.      0.001
 90TH PERCENTILE                                               22.           
 MAXIMUM                    0.013        23.        13.        22.      0.001
 DATE OF MAXIMUM       1991-11-06 1992-08-05 1991-08-07 1993-02-03 1992-08-05
 STANDARD DEVIATION         0.004         4.         2.         1.      0.000




                          LINDANE     ALDRIN   DIELDRIN       PCBS          K
                                                                         DISS
                            18070      18130      18150      18165      19102
                             ug/L       ug/L       ug/L       ug/L     mg/L K


 NO. OF L-FLAGGED VALUES        2          6          6          6          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          4
 MEAN                       0.001      0.001      0.001      0.050        0.8
 MINIMUM                               0.001      0.001      0.050        0.7
 DATE OF MINIMUM                  1991-05-08 1991-05-08 1991-05-08 1992-02-05
 10TH PERCENTILE                                                             
 MEDIAN                                0.001      0.001      0.050        0.8
 90TH PERCENTILE                                                             
 MAXIMUM                               0.001      0.001      0.050        0.8
 DATE OF MAXIMUM                  1992-08-05 1992-08-05 1992-08-05 1991-11-06
 STANDARD DEVIATION                    0.000      0.000      0.000        0.1




                                K         Ca         Ca         Cr         Cr
                             DISS       DISS       DISS      TOTAL      TOTAL
                            19103      20101      20115      24002      24009
                           mg/L K    mg/L Ca    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          5          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          5          5          0          0
 MEAN                         1.2     16.160     13.846      0.003      0.005
 MINIMUM                      0.8     13.000      5.300      0.003      0.005
 DATE OF MINIMUM       1992-11-04 1991-08-07 1993-02-03 1991-02-06 1992-05-06
 10TH PERCENTILE                                                             
 MEDIAN                       1.2     17.000     17.000      0.003      0.005
 90TH PERCENTILE                                                             
 MAXIMUM                      1.8     18.800     18.431      0.003      0.005
 DATE OF MAXIMUM       1993-02-03 1991-02-06 1993-11-10 1992-02-05 1993-11-10
 STANDARD DEVIATION           0.4      2.535      5.754      0.000      0.000




                               Cr         Mn         Mn         Mn         Fe
                             DISS      TOTAL      TOTAL       DISS      TOTAL
                            24111      25004      25010      25109      26002
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        5          5          7          5          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          2
 MEAN                       0.005       0.01       0.01       0.01       0.01
 MINIMUM                    0.005       0.01       0.01       0.01       0.01
 DATE OF MINIMUM       1992-11-04 1991-02-06 1992-05-06 1992-11-04 1991-02-06
 10TH PERCENTILE                                                             
 MEDIAN                     0.005       0.01       0.01       0.01       0.01
 90TH PERCENTILE                                                             
 MAXIMUM                    0.005       0.01       0.01       0.01       0.01
 DATE OF MAXIMUM       1993-11-10 1992-02-05 1993-11-10 1993-11-10 1992-02-05
 STANDARD DEVIATION         0.000       0.00       0.00       0.00       0.00




                               Fe         Fe         Co         Ni         Ni
                            TOTAL       DISS      TOTAL      TOTAL       DISS
                            26009      26109      27009      28009      28109
                          mg/L Fe    mg/L Fe    mg/L Co    mg/L Ni    mg/L Ni


 NO. OF L-FLAGGED VALUES        6          5          1          7          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0          0          0
 MEAN                        0.01       0.01      0.005      0.005      0.005
 MINIMUM                     0.01       0.01                 0.005      0.005
 DATE OF MINIMUM       1992-05-06 1992-11-04            1992-05-06 1992-11-04
 10TH PERCENTILE                                                             
 MEDIAN                      0.01       0.01                 0.005      0.005
 90TH PERCENTILE                                                             
 MAXIMUM                     0.02       0.01                 0.005      0.005
 DATE OF MAXIMUM       1993-11-10 1993-11-10            1993-11-10 1993-11-10
 STANDARD DEVIATION          0.00       0.00                 0.000      0.000




                               Cu         Cu         Cu         Zn         Zn
                            TOTAL      TOTAL       DISS      TOTAL      TOTAL
                            29006      29009      29109      30004      30009
                          mg/L Cu    mg/L Cu    mg/L Cu    mg/L Zn    mg/L Zn


 NO. OF L-FLAGGED VALUES        5          7          5          2          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          3          4
 MEAN                       0.010      0.004      0.004      0.010      0.007
 MINIMUM                    0.010      0.004      0.004      0.005      0.005
 DATE OF MINIMUM       1991-02-06 1992-05-06 1992-11-04 1991-02-06 1992-11-04
 10TH PERCENTILE                                                             
 MEDIAN                     0.010      0.004      0.004      0.006      0.007
 90TH PERCENTILE                                                             
 MAXIMUM                    0.010      0.004      0.004      0.024      0.013
 DATE OF MAXIMUM       1992-02-05 1993-11-10 1993-11-10 1991-08-07 1993-05-12
 STANDARD DEVIATION         0.000      0.000      0.000      0.008      0.003




                               Zn         As         As         As         Se
                             DISS      TOTAL      TOTAL       DISS      TOTAL
                            30109      33003      33008      33108      34002
                          mg/L Zn    mg/L As    mg/L As    mg/L As    mg/L Se


 NO. OF L-FLAGGED VALUES        3          5          7          5          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          0          0          0          0
 MEAN                       0.006      0.001      0.005      0.005      0.002
 MINIMUM                    0.005      0.001      0.005      0.005      0.002
 DATE OF MINIMUM       1992-11-04 1991-02-06 1992-05-06 1992-11-04 1991-02-06
 10TH PERCENTILE                                                             
 MEDIAN                     0.005      0.001      0.005      0.005      0.002
 90TH PERCENTILE                                                             
 MAXIMUM                    0.011      0.001      0.005      0.005      0.002
 DATE OF MAXIMUM       1993-05-12 1992-02-05 1993-11-10 1993-11-10 1992-02-05
 STANDARD DEVIATION         0.003      0.000      0.000      0.000      0.000




                               Se         Se   COLIFORM   FAEC COL         Cd
                            TOTAL       DISS      TOTAL                 TOTAL
                            34008      34108      36001      36011      48002
                          mg/L Se    mg/L Se   No/100ml   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES        7          5          7          9          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          2          2          0
 MEAN                       0.002      0.002         1.         1.      0.005
 MINIMUM                    0.002      0.002         0.         1.      0.005
 DATE OF MINIMUM       1992-05-06 1992-11-04 1991-05-08 1992-05-06 1991-02-06
 10TH PERCENTILE                                                1.           
 MEDIAN                     0.002      0.002         1.         1.      0.005
 90TH PERCENTILE                                                2.           
 MAXIMUM                    0.002      0.002         4.         3.      0.005
 DATE OF MAXIMUM       1993-11-10 1993-11-10 1992-08-05 1991-08-07 1992-02-05
 STANDARD DEVIATION         0.000      0.000         1.         1.      0.000




                               Cd         Cd         Ba         Hg         Pb
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            48011      48109      80011      80111      82001
                          mg/L Cd    mg/L Cd    ug/L Hg    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        7          5         12          5          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.005      0.005      0.500      0.500      0.005
 MINIMUM                    0.005      0.005      0.500      0.500           
 DATE OF MINIMUM       1992-05-06 1992-11-04 1991-02-06 1992-11-04           
 10TH PERCENTILE                                  0.500                      
 MEDIAN                     0.005      0.005      0.500      0.500           
 90TH PERCENTILE                                  0.500                      
 MAXIMUM                    0.005      0.005      0.500      0.500           
 DATE OF MAXIMUM       1993-11-10 1993-11-10 1993-11-10 1993-11-10           
 STANDARD DEVIATION         0.000      0.000      0.000      0.000           




                               Pb         Pb         Pb    BENZENE
                            TOTAL      TOTAL       DISS           
                            82002      82009      82109      95100
                          mg/L Pb    mg/L Pb    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES        5          6          5          2
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0
 MEAN                       0.010      0.005      0.005        0.5
 MINIMUM                    0.010      0.005      0.005           
 DATE OF MINIMUM       1991-02-06 1992-05-06 1992-11-04           
 10TH PERCENTILE                                                  
 MEDIAN                     0.010      0.005      0.005           
 90TH PERCENTILE                                                  
 MAXIMUM                    0.010      0.005      0.005           
 DATE OF MAXIMUM       1992-02-05 1993-11-10 1993-11-10           
 STANDARD DEVIATION         0.000      0.000      0.000           





 STATION - SAGAMI RESERVOIR AT INTAKE               STATION NO. 080006
 COUNTRY - JAPAN                                    DEPTH(M)      19.4
 LOCATION - OCT. 2  LAT. 35/36/49  LONG. 139/12/00  ELEVATION(M) 167.0
 REGIONAL CENTRE - WPRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-14 TO 1993-12-13

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      TRANS          B   ORG CARB
                             COND                            TOTAL       DISS
                            02041      02061      02076      05011      06101
                            us/cm      deg C          m     mg/L B     mg/L C


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         35         35          3          2
 MEAN                        139.       14.8        1.5        0.0        1.0
 MINIMUM                     113.        7.3        0.3                      
 DATE OF MINIMUM       1993-09-13 1991-01-14 1991-09-09                      
 10TH PERCENTILE             118.        7.8        0.4                      
 MEDIAN                      141.       14.0        1.6                      
 90TH PERCENTILE             152.       22.1        2.2                      
 MAXIMUM                     157.       26.0        3.0                      
 DATE OF MAXIMUM       1993-06-07 1991-07-08 1993-12-13                      
 STANDARD DEVIATION           13.        5.5        0.7                      




                          PHENOLS         CN   CHLORO A     NO3NO2      NO2-N
                                                                             
                            06532      06606      06711      07105      07207
                             mg/L    mg/L Cn       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        2         14          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         32         21         15
 MEAN                       0.001      0.005     0.0690       1.07       0.02
 MINIMUM                               0.005     0.0005       0.62       0.01
 DATE OF MINIMUM                  1991-01-14 1993-09-13 1993-04-12 1991-10-07
 10TH PERCENTILE                       0.005     0.0020       0.76       0.01
 MEDIAN                                0.005     0.0173       1.03       0.02
 90TH PERCENTILE                       0.005     0.1550       1.35       0.03
 MAXIMUM                               0.005     0.9300       1.38       0.04
 DATE OF MAXIMUM                  1992-03-09 1992-08-10 1993-12-13 1991-08-12
 STANDARD DEVIATION                    0.000     0.1723       0.21       0.01




                            NO3-N        NH3    PERCENT         O2         O2
                                                 DO SAT       DISS       DISS
                            07313      07551      08001      08101      08102
                           mg/L N     mg/L N    PERCENT    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          2          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         34         35         15         20
 MEAN                        0.97       0.05       107.       11.0        9.7
 MINIMUM                     0.23       0.01        76.        6.6        6.7
 DATE OF MINIMUM       1991-07-08 1991-04-08 1993-08-09 1991-09-09 1992-09-07
 10TH PERCENTILE             0.37       0.02        80.        7.9        7.0
 MEDIAN                      1.06       0.04        97.       10.4        9.9
 90TH PERCENTILE             1.23       0.10       138.       12.2       10.6
 MAXIMUM                     1.28       0.15       256.       19.8       13.8
 DATE OF MAXIMUM       1991-03-11 1992-03-09 1991-07-08 1991-07-08 1992-08-10
 STANDARD DEVIATION          0.30       0.04        33.        2.8        1.5




                              BOD        COD     PERM V          F          F
                                                              DISS       DISS
                            08201      08301      08401      09104      09105
                          mg/L O2    mg/L O2    mg/L O2     mg/L F     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36         21         14          4          2
 MEAN                          2.         1.         1.        0.1        0.1
 MINIMUM                       0.         1.         0.        0.1           
 DATE OF MINIMUM       1991-06-10 1992-04-13 1992-02-10 1992-10-12           
 10TH PERCENTILE               1.         1.         0.                      
 MEDIAN                        1.         1.         1.        0.1           
 90TH PERCENTILE               5.         3.         2.                      
 MAXIMUM                      11.         5.         4.        0.1           
 DATE OF MAXIMUM       1992-08-10 1992-08-10 1991-07-08 1993-10-12           
 STANDARD DEVIATION            2.         1.         1.        0.0           




                              ALK         pH       TENS         Na         Na
                            TOTAL               ANIONIC       DISS       DISS
                            10102      10300      10702      11102      11105
                             mg/L   pH UNITS       mg/L    mg/L Na    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          4          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36         36         11         20         12
 MEAN                       44.22        7.8        0.0         6.         6.
 MINIMUM                    34.00        7.2        0.0         2.         4.
 DATE OF MINIMUM       1993-07-12 1991-09-09 1991-01-14 1993-10-12 1991-10-07
 10TH PERCENTILE            35.60        7.3        0.0         2.         4.
 MEDIAN                     45.00        7.5        0.0         6.         7.
 90TH PERCENTILE            49.30        8.9        0.0         9.         7.
 MAXIMUM                    53.00        9.6        0.0        10.         8.
 DATE OF MAXIMUM       1993-04-12 1991-07-08 1991-08-12 1993-06-07 1991-12-09
 STANDARD DEVIATION          5.34        0.7        0.0         2.         1.




                               Mg         Al         Si    P ORTHO          P
                             DISS      TOTAL   REACTIVE      TOTAL      TOTAL
                            12103      13002      14101      15205      15405
                          mg/L Mg    mg/L Al   mg/LSiO2     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36          4         36         14         35
 MEAN                          5.      0.135      23.72      0.046      0.091
 MINIMUM                       3.      0.010      20.00      0.001      0.020
 DATE OF MINIMUM       1993-11-15 1993-04-12 1991-07-08 1991-06-10 1992-07-13
 10TH PERCENTILE               4.                 20.00      0.002      0.045
 MEDIAN                        5.      0.070      24.00      0.039      0.070
 90TH PERCENTILE               6.                 27.00      0.087      0.135
 MAXIMUM                       8.      0.390      28.00      0.095      0.430
 DATE OF MAXIMUM       1993-07-12 1992-10-12 1991-08-12 1991-03-11 1992-08-10
 STANDARD DEVIATION            1.      0.175       2.41      0.031      0.073



                         SULPHATE   SULPHATE         Cl         Cl       PCBS
                                                   DISS       DISS           
                            16303      16306      17201      17204      18165
                         mg/L SO4   mg/L SO4    mg/L Cl    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         15         21         15          4
 MEAN                         12.        12.         4.         4.      0.033
 MINIMUM                      10.         8.         3.         3.      0.000
 DATE OF MINIMUM       1992-05-11 1991-10-07 1992-10-12 1991-10-07 1992-04-13
 10TH PERCENTILE              10.         9.         3.         3.           
 MEDIAN                       12.        12.         4.         4.      0.000
 90TH PERCENTILE              14.        14.         5.         5.           
 MAXIMUM                      19.        15.         6.         5.      0.100
 DATE OF MAXIMUM       1993-05-12 1991-02-12 1993-12-13 1992-02-10 1991-10-07
 STANDARD DEVIATION            2.         2.         1.         1.      0.052




                                K          K         Ca         Cr         Mn
                             DISS       DISS       DISS      TOTAL      TOTAL
                            19102      19105      20101      24002      25004
                           mg/L K     mg/L K    mg/L Ca    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          2          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         12         36          4         13
 MEAN                         1.1        1.6     12.875      0.003       0.03
 MINIMUM                      0.4        0.8      8.500      0.000       0.01
 DATE OF MINIMUM       1993-11-15 1991-11-11 1991-12-09 1992-04-13 1991-01-14
 10TH PERCENTILE              0.6        0.8     11.000                  0.01
 MEDIAN                       1.2        1.7     13.000      0.000       0.01
 90TH PERCENTILE              1.6        2.1     14.000                  0.04
 MAXIMUM                      1.7        2.5     15.000      0.010       0.13
 DATE OF MAXIMUM       1993-06-07 1991-12-09 1993-01-11 1991-10-07 1991-09-09
 STANDARD DEVIATION           0.4        0.5      1.349      0.005       0.03




                               Mn         Mn         Fe         Fe         Ni
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25005      25104      26004      26104      28002
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        0          8          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         28         36         22          2
 MEAN                        0.03       0.01       0.27       0.05      0.000
 MINIMUM                     0.01       0.00       0.02       0.01           
 DATE OF MINIMUM       1992-08-10 1992-05-11 1992-09-07 1991-04-08           
 10TH PERCENTILE             0.01       0.00       0.05       0.01           
 MEDIAN                      0.02       0.01       0.13       0.02           
 90TH PERCENTILE             0.05       0.02       0.51       0.10           
 MAXIMUM                     0.08       0.05       2.80       0.24           
 DATE OF MAXIMUM       1992-11-09 1991-09-09 1991-09-09 1991-10-07           
 STANDARD DEVIATION          0.02       0.01       0.47       0.06           




                               Cu         Zn         As         As         Se
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            29006      30004      33003      33007      34002
                          mg/L Cu    mg/L Zn    mg/L As    mg/L As    mg/L Se


 NO. OF L-FLAGGED VALUES        2          2          2          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          4          0          4          4
 MEAN                       0.003      0.003      0.010      0.000      0.000
 MINIMUM                    0.000      0.000                 0.000      0.000
 DATE OF MINIMUM       1992-04-13 1992-04-13            1992-04-13 1992-04-13
 10TH PERCENTILE                                                             
 MEDIAN                     0.000      0.000                 0.000      0.000
 90TH PERCENTILE                                                             
 MAXIMUM                    0.010      0.010                 0.000      0.001
 DATE OF MAXIMUM       1991-10-07 1991-10-07            1993-10-12 1991-10-07
 STANDARD DEVIATION         0.005      0.005                 0.000      0.001




                         COLIFORM   FAEC COL   FAEC COL       FAEC         Cd
                            TOTAL                            STREP      TOTAL
                            36001      36011      36012      36101      48001
                         No/100ml   No/100ml   No/100ml   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          1         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36         15         21         14         21
 MEAN                       3911.       173.       284.       134.      0.000
 MINIMUM                      23.         8.        21.         1.      0.000
 DATE OF MINIMUM       1991-06-10 1991-06-10 1992-04-13 1991-05-13 1992-04-13
 10TH PERCENTILE             294.         8.        33.         2.      0.000
 MEDIAN                     2300.        79.        79.         8.      0.000
 90TH PERCENTILE           13000.       280.       240.       102.      0.001
 MAXIMUM                   17000.      1300.      3300.      1700.      0.001
 DATE OF MAXIMUM       1993-07-12 1991-08-12 1993-11-15 1991-09-09 1992-03-09
 STANDARD DEVIATION         4531.       325.       711.       435.      0.001




                               Ba         Ba         Pb         Pb    PHENOLS
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            80011      80016      82001      82002      95011
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES       15          0          0         15          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         21         21          0          4
 MEAN                       0.100      0.000      0.002      0.010        0.0
 MINIMUM                    0.100      0.000      0.000      0.010        0.0
 DATE OF MINIMUM       1991-01-14 1992-04-13 1992-04-13 1991-01-14 1992-04-13
 10TH PERCENTILE            0.100      0.000      0.000      0.010           
 MEDIAN                     0.100      0.000      0.000      0.010        0.0
 90TH PERCENTILE            0.100      0.000      0.007      0.010           
 MAXIMUM                    0.100      0.000      0.010      0.010        0.0
 DATE OF MAXIMUM       1992-03-09 1993-12-13 1993-07-12 1992-03-09 1993-10-12
 STANDARD DEVIATION         0.000      0.000      0.003      0.000        0.0



                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        1
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        0
 MEAN                         0.0
 MINIMUM                         
 DATE OF MINIMUM                 
 10TH PERCENTILE                 
 MEDIAN                          
 90TH PERCENTILE                 
 MAXIMUM                         
 DATE OF MAXIMUM                 
 STANDARD DEVIATION              





 STATION - SAGAMI RIVER AT SAMUKAWA                 STATION NO. 080007
 COUNTRY - JAPAN                                    DEPTH(M)       3.0
 LOCATION - OCT. 2  LAT. 35/22/20  LONG. 139/22/30  ELEVATION(M)   5.0
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-09 TO 1993-12-08

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B        TOC   ORG CARB
                             COND                 TOTAL                  DISS
                            02041      02061      05011      06001      06101
                            us/cm      deg C     mg/L B     mg/L C     mg/L C


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         63          2          2          5
 MEAN                        180.       14.1        0.0         1.        1.1
 MINIMUM                     123.        5.5                              0.8
 DATE OF MINIMUM       1991-09-18 1992-02-19                       1993-01-11
 10TH PERCENTILE             152.        7.1                                 
 MEDIAN                      181.       13.5                              1.1
 90TH PERCENTILE             205.       20.7                                 
 MAXIMUM                     226.       25.3                              1.6
 DATE OF MAXIMUM       1991-03-20 1992-08-24                       1992-04-13
 STANDARD DEVIATION           23.        5.4                              0.3




                          PHENOLS         CN   CHLORO A     NO3NO2      NO2-N
                                                                             
                            06532      06606      06711      07105      07207
                             mg/L    mg/L Cn       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        3         14          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0         27         21         30
 MEAN                       0.001      0.005     0.0062       1.67       0.04
 MINIMUM                    0.001      0.005     0.0017       0.82       0.01
 DATE OF MINIMUM       1991-04-17 1991-02-20 1992-11-02 1993-06-16 1991-09-04
 10TH PERCENTILE                       0.005     0.0024       1.25       0.01
 MEDIAN                     0.001      0.005     0.0052       1.63       0.04
 90TH PERCENTILE                       0.005     0.0096       2.10       0.05
 MAXIMUM                    0.001      0.005     0.0313       2.57       0.07
 DATE OF MAXIMUM       1992-01-22 1992-03-23 1993-08-17 1993-04-14 1992-03-23
 STANDARD DEVIATION         0.000      0.000     0.0056       0.38       0.01




                            NO3-N        NH3    PERCENT         O2         O2
                                                 DO SAT       DISS       DISS
                            07313      07551      08001      08101      08102
                           mg/L N     mg/L N    PERCENT    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         63         36         15         21
 MEAN                        1.87       0.13        93.        9.8        8.9
 MINIMUM                     1.13       0.04        63.        6.7        6.4
 DATE OF MINIMUM       1991-09-18 1993-08-17 1993-04-14 1991-06-19 1993-06-16
 10TH PERCENTILE             1.27       0.05        78.        6.7        6.5
 MEDIAN                      1.85       0.12        96.        9.4        9.2
 90TH PERCENTILE             2.35       0.25       108.       11.8       10.6
 MAXIMUM                     2.53       0.40       129.       15.3       10.9
 DATE OF MAXIMUM       1991-03-20 1992-03-04 1992-03-23 1992-03-23 1993-01-11
 STANDARD DEVIATION          0.41       0.08        13.        2.2        1.4




                              BOD        COD     PERM V          F          F
                                                              DISS       DISS
                            08201      08301      08401      09104      09105
                          mg/L O2    mg/L O2    mg/L O2     mg/L F     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         32         30          6          5
 MEAN                          1.         1.         1.        0.1        0.1
 MINIMUM                       0.         1.         1.        0.1        0.1
 DATE OF MINIMUM       1991-10-23 1992-04-13 1991-01-09 1992-04-13 1991-01-23
 10TH PERCENTILE               1.         1.         1.                      
 MEDIAN                        1.         1.         1.        0.1        0.1
 90TH PERCENTILE               2.         2.         2.                      
 MAXIMUM                       3.         2.         5.        0.1        0.1
 DATE OF MAXIMUM       1993-04-14 1993-12-08 1991-08-07 1993-07-14 1991-07-24
 STANDARD DEVIATION            1.         0.         1.        0.0        0.0




                              ALK         pH   SUSP SOL   VOL SUSP       TENS
                            TOTAL               105 DEG     SOLIDS    ANIONIC
                            10102      10300      10401      10511      10702
                             mg/L   pH UNITS       mg/L       mg/L       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         63         32         15         24
 MEAN                       48.89        7.4        82.         4.        0.0
 MINIMUM                    35.00        6.8         3.         1.        0.0
 DATE OF MINIMUM       1991-09-18 1991-11-20 1991-07-24 1991-04-17 1991-08-28
 10TH PERCENTILE            41.30        7.3         4.         1.        0.0
 MEDIAN                     49.00        7.4       116.         2.        0.0
 90TH PERCENTILE            55.00        7.4       149.        11.        0.1
 MAXIMUM                    59.00        7.6       172.        16.        0.1
 DATE OF MAXIMUM       1993-06-16 1991-09-18 1992-08-10 1991-08-28 1992-02-19
 STANDARD DEVIATION          5.25        0.1        65.         5.        0.0




                               Na         Mg         Al         Si    P ORTHO
                             DISS       DISS      TOTAL   REACTIVE      TOTAL
                            11102      12103      13002      14101      15205
                          mg/L Na    mg/L Mg    mg/L Al   mg/LSiO2     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         36         10         13         15
 MEAN                          9.         5.      0.267      19.56      0.058
 MINIMUM                       6.         2.      0.060       0.23      0.013
 DATE OF MINIMUM       1993-09-20 1991-11-20 1993-12-08 1991-04-17 1991-10-23
 10TH PERCENTILE                          3.      0.060       5.56      0.013
 MEDIAN                        8.         5.      0.290      21.00      0.062
 90TH PERCENTILE                          6.      0.460      22.70      0.088
 MAXIMUM                      13.         6.      0.470      25.00      0.130
 DATE OF MAXIMUM       1993-12-08 1991-06-19 1993-08-17 1992-04-13 1991-04-17
 STANDARD DEVIATION            2.         1.      0.152       6.07      0.032




                                P   SULPHATE   SULPHATE         Cl         Cl
                            TOTAL                             DISS       DISS
                            15405      16303      16306      17201      17204
                           mg/L P   mg/L SO4   mg/L SO4    mg/L Cl    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         11          2         31         30
 MEAN                       0.062        16.        17.        10.        11.
 MINIMUM                    0.040        13.                    8.         6.
 DATE OF MINIMUM       1993-08-17 1993-06-16            1992-04-13 1991-09-18
 10TH PERCENTILE                         13.                    8.         7.
 MEDIAN                     0.060        15.                   10.        11.
 90TH PERCENTILE                         21.                   12.        14.
 MAXIMUM                    0.090        21.                   14.        15.
 DATE OF MAXIMUM       1993-05-12 1993-05-12            1992-05-25 1992-03-04
 STANDARD DEVIATION         0.016         3.                    2.         2.




                             PCBS          K         Ca         Cr         Mn
                                        DISS       DISS      TOTAL      TOTAL
                            18165      19102      20101      24002      25004
                             ug/L     mg/L K    mg/L Ca    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        2          0          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          9         36          4         15
 MEAN                       0.050        2.5     18.944      0.003       0.08
 MINIMUM                    0.000        1.0     14.000      0.000       0.01
 DATE OF MINIMUM       1993-04-14 1993-05-12 1991-08-28 1992-04-13 1991-02-20
 10TH PERCENTILE                                 16.000                  0.01
 MEDIAN                     0.050        1.3     19.000      0.000       0.03
 90TH PERCENTILE                                 22.000                  0.08
 MAXIMUM                    0.100       10.0     24.000      0.010       0.68
 DATE OF MAXIMUM       1991-10-23 1993-06-16 1993-05-12 1991-10-23 1991-09-18
 STANDARD DEVIATION         0.058        2.9      2.437      0.005       0.17




                               Mn         Fe         Ni         Cu         Zn
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            25005      26004      28002      29006      30004
                          mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0          0          2          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         34          2          4          5
 MEAN                        0.02       0.42      0.000      0.003      0.003
 MINIMUM                     0.00       0.04                 0.000      0.000
 DATE OF MINIMUM       1993-09-20 1991-02-20            1992-04-13 1992-04-13
 10TH PERCENTILE             0.01       0.05                                 
 MEDIAN                      0.02       0.26                 0.000      0.000
 90TH PERCENTILE             0.03       0.70                                 
 MAXIMUM                     0.04       4.30                 0.010      0.010
 DATE OF MAXIMUM       1992-10-12 1991-08-28            1991-10-23 1991-10-23
 STANDARD DEVIATION          0.01       0.73                 0.005      0.005




                               Zn         As         As         Se         Se
                             DISS      TOTAL      TOTAL      TOTAL       DISS
                            30104      33003      33007      34002      34102
                          mg/L Zn    mg/L As    mg/L As    mg/L Se    mg/L Se


 NO. OF L-FLAGGED VALUES        1          2          0          2          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          4          3          0
 MEAN                       0.001      0.010      0.000      0.000      0.005
 MINIMUM                                          0.000      0.000           
 DATE OF MINIMUM                             1992-04-13 1992-04-13           
 10TH PERCENTILE                                                             
 MEDIAN                                           0.000      0.000           
 90TH PERCENTILE                                                             
 MAXIMUM                                          0.000      0.001           
 DATE OF MAXIMUM                             1993-10-06 1991-10-23           
 STANDARD DEVIATION                               0.000      0.001           




                         COLIFORM   FAEC COL   FAEC COL       FAEC         Cd
                            TOTAL                            STREP      TOTAL
                            36001      36011      36012      36101      48001
                         No/100ml   No/100ml   No/100ml   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          0         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         15         21         15         21
 MEAN                     2.7E+04      2153.      1010.       373.      0.000
 MINIMUM                  2.2E+03       170.       120.        33.      0.000
 DATE OF MINIMUM       1993-01-11 1992-01-22 1993-01-11 1991-04-17 1992-04-13
 10TH PERCENTILE          4.9E+03       250.       148.        33.      0.000
 MEDIAN                   1.7E+04       940.       490.       140.      0.000
 90TH PERCENTILE          4.9E+04      6400.      1700.       945.      0.001
 MAXIMUM                  2.2E+05      7900.      4300.      1700.      0.001
 DATE OF MAXIMUM       1991-08-07 1991-02-20 1993-08-17 1991-09-18 1992-03-23
 STANDARD DEVIATION       3.1E+04      2654.      1059.       479.      0.001




                               Ba         Ba         Pb         Pb    PHENOLS
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            80011      80016      82001      82002      95011
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES       15          0          0         15          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         21         21          0          7
 MEAN                       0.100      0.000      0.000      0.010        0.0
 MINIMUM                    0.100      0.000      0.000      0.010        0.0
 DATE OF MINIMUM       1991-01-23 1992-04-13 1992-04-13 1991-01-23 1992-04-13
 10TH PERCENTILE            0.100      0.000      0.000      0.010           
 MEDIAN                     0.100      0.000      0.000      0.010        0.0
 90TH PERCENTILE            0.100      0.000      0.000      0.010           
 MAXIMUM                    0.100      0.000      0.000      0.010        0.0
 DATE OF MAXIMUM       1992-03-23 1993-12-08 1993-12-08 1992-03-23 1993-10-06
 STANDARD DEVIATION         0.000      0.000      0.000      0.000        0.0




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       62
 MEAN                        45.1
 MINIMUM                     16.0
 DATE OF MINIMUM       1993-03-15
 10TH PERCENTILE             18.0
 MEDIAN                      29.5
 90TH PERCENTILE             75.2
 MAXIMUM                    312.8
 DATE OF MAXIMUM       1991-10-09
 STANDARD DEVIATION          46.7





 STATION - SHINANO RIVER AT ZUIUN BRIDGE            STATION NO. 080008
 COUNTRY - JAPAN                                    DEPTH(M)       2.8
 LOCATION - OCT. 2  LAT. 37/35/56  LONG. 138/57/04  ELEVATION(M)   6.3
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-09 TO 1992-03-25

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP         CN   CHLORO A      NO2-N
                             COND                                            
                            02041      02061      06606      06711      07207
                            us/cm      deg C    mg/L Cn       mg/L     mg/L N


 NO. OF L-FLAGGED VALUES        0          0         30          3          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         30          0         27         30
 MEAN                        137.       11.4      0.010     0.0048       0.01
 MINIMUM                      75.        2.5      0.010     0.0020       0.01
 DATE OF MINIMUM       1991-04-10 1991-02-20 1991-01-09 1991-09-26 1991-04-10
 10TH PERCENTILE             104.        3.0      0.010     0.0020       0.01
 MEDIAN                      137.        9.8      0.010     0.0040       0.01
 90TH PERCENTILE             173.       21.5      0.010     0.0080       0.02
 MAXIMUM                     188.       23.5      0.010     0.0130       0.02
 DATE OF MAXIMUM       1991-02-07 1991-08-28 1992-03-25 1991-06-05 1992-02-19
 STANDARD DEVIATION           26.        7.1      0.000     0.0027       0.00




                            NO3-N        NH3         O2        BOD          F
                                                   DISS                  DISS
                            07313      07556      08101      08201      09105
                           mg/L N     mg/L N    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          1          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         29         30         30         29
 MEAN                        0.86       0.10       10.9         2.        0.1
 MINIMUM                     0.55       0.02        8.2         1.        0.0
 DATE OF MINIMUM       1991-04-25 1991-03-06 1991-08-07 1991-09-26 1991-12-19
 10TH PERCENTILE             0.61       0.04        8.3         1.        0.0
 MEDIAN                      0.84       0.08       10.8         2.        0.1
 90TH PERCENTILE             1.06       0.19       13.2         3.        0.1
 MAXIMUM                     1.17       0.29       13.5         3.        0.1
 DATE OF MAXIMUM       1991-02-20 1991-02-07 1991-02-07 1991-02-20 1991-06-19
 STANDARD DEVIATION          0.17       0.06        1.9         1.        0.0




                              ALK         pH   SUSP SOL         Si    P ORTHO
                            TOTAL               105 DEG   REACTIVE      TOTAL
                            10102      10302      10401      14101      15205
                             mg/L   pH UNITS       mg/L   mg/LSiO2     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         30         30         30         30
 MEAN                       24.93        7.3        42.      15.49      0.058
 MINIMUM                    13.00        7.0         8.      10.70      0.030
 DATE OF MINIMUM       1991-04-10 1991-04-10 1991-05-22 1991-05-22 1991-05-22
 10TH PERCENTILE            19.10        7.1         9.      11.90      0.034
 MEDIAN                     25.50        7.3        24.      15.20      0.049
 90TH PERCENTILE            30.10        7.4        81.      18.80      0.093
 MAXIMUM                    35.00        7.6       256.      19.10      0.176
 DATE OF MAXIMUM       1991-02-07 1991-08-28 1991-07-03 1991-09-12 1991-07-03
 STANDARD DEVIATION          4.84        0.1        56.       2.38      0.034



                         SULPHATE         Cl        DDT     ALDRIN   DIELDRIN
                                        DISS      TOTAL                      
                            16302      17204      18002      18130      18150
                         mg/L SO4    mg/L Cl       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0         15         14         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         29          0          1          0
 MEAN                         17.        11.      0.005      0.001      0.001
 MINIMUM                      11.         5.      0.005      0.001      0.001
 DATE OF MINIMUM       1991-08-07 1991-04-10 1991-01-23 1991-01-23 1991-01-23
 10TH PERCENTILE              14.         7.      0.005      0.001      0.001
 MEDIAN                       16.        10.      0.005      0.001      0.001
 90TH PERCENTILE              19.        15.      0.005      0.001      0.001
 MAXIMUM                      22.        16.      0.005      0.001      0.001
 DATE OF MAXIMUM       1991-07-03 1991-02-07 1992-03-25 1992-03-25 1992-03-25
 STANDARD DEVIATION            3.         3.      0.000      0.000      0.000




                             PCBS         Cr         Cr         Mn         Mn
                                       TOTAL       DISS      TOTAL       DISS
                            18165      24002      24052      25004      25104
                             ug/L    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES       15         24         28          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          6          2         29         30
 MEAN                       0.300      0.003      0.003       0.09       0.05
 MINIMUM                    0.300      0.003      0.003       0.04       0.02
 DATE OF MINIMUM       1991-01-09 1991-01-09 1991-01-09 1991-05-22 1991-07-17
 10TH PERCENTILE            0.300      0.003      0.003       0.05       0.03
 MEDIAN                     0.300      0.003      0.003       0.07       0.04
 90TH PERCENTILE            0.300      0.003      0.003       0.13       0.08
 MAXIMUM                    0.300      0.010      0.003       0.25       0.15
 DATE OF MAXIMUM       1992-03-04 1991-07-03 1992-03-25 1991-07-03 1991-02-07
 STANDARD DEVIATION         0.000      0.001      0.000       0.05       0.03




                               Fe         Fe         Cu         Cu         Zn
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            26004      26104      29006      29106      30004
                          mg/L Fe    mg/L Fe    mg/L Cu    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0         27         29          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         30          3          1         29
 MEAN                        1.64       0.19      0.010      0.010      0.015
 MINIMUM                     0.46       0.09      0.010      0.010      0.005
 DATE OF MINIMUM       1991-08-28 1991-10-02 1991-01-09 1991-01-09 1991-05-22
 10TH PERCENTILE             0.69       0.11      0.010      0.010      0.005
 MEDIAN                      1.24       0.19      0.010      0.010      0.012
 90TH PERCENTILE             2.53       0.26      0.010      0.010      0.032
 MAXIMUM                     6.69       0.43      0.011      0.010      0.039
 DATE OF MAXIMUM       1991-10-02 1991-02-07 1991-07-03 1992-03-25 1991-10-02
 STANDARD DEVIATION          1.34       0.08      0.000      0.000      0.010




                               As         Se   FAEC COL         Cd         Cd
                            TOTAL      TOTAL                 TOTAL       DISS
                            33003      34002      36012      48001      48101
                          mg/L As    mg/L Se   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES       12         30          0         30         30
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18          0         30          0          0
 MEAN                       0.001      0.002       407.      0.005      0.005
 MINIMUM                    0.001      0.002        40.      0.005      0.005
 DATE OF MINIMUM       1991-01-09 1991-01-09 1991-05-08 1991-01-09 1991-01-09
 10TH PERCENTILE            0.001      0.002        50.      0.005      0.005
 MEDIAN                     0.001      0.002       320.      0.005      0.005
 90TH PERCENTILE            0.002      0.002       860.      0.005      0.005
 MAXIMUM                    0.003      0.002      1800.      0.005      0.005
 DATE OF MAXIMUM       1991-10-02 1992-03-25 1991-10-02 1992-03-25 1992-03-25
 STANDARD DEVIATION         0.001      0.000       379.      0.000      0.000




                               Ba         Hg         Pb         Pb       INST
                            TOTAL       DISS      TOTAL       DISS     DISCHG
                            80011      80111      82001      82101      97160
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES       30         30         25         29          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          5          1         27
 MEAN                       0.200      0.200      0.005      0.005      225.6
 MINIMUM                    0.200      0.200      0.005      0.005      152.0
 DATE OF MINIMUM       1991-01-09 1991-01-09 1991-01-09 1991-01-09 1992-02-19
 10TH PERCENTILE            0.200      0.200      0.005      0.005      170.7
 MEDIAN                     0.200      0.200      0.005      0.005      215.0
 90TH PERCENTILE            0.200      0.200      0.007      0.005      287.9
 MAXIMUM                    0.200      0.200      0.009      0.009      336.0
 DATE OF MAXIMUM       1992-03-25 1992-03-25 1991-06-05 1991-06-05 1991-04-10
 STANDARD DEVIATION         0.000      0.000      0.001      0.001       44.3





 STATION - KISO RIVER AT SHIMO-OCHIAI               STATION NO. 080009
 COUNTRY - JAPAN                                    DEPTH(M)    9999.9
 LOCATION - OCT. 2  LAT. 35/30/24  LONG. 137/30/10  ELEVATION(M) 260.0
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-22 TO 1992-03-03

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP         CN      NO2-N      NO3-N
                             COND                                            
                            02041      02062      06606      07207      07313
                            us/cm      deg C    mg/L Cn     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         15          0         14         14
 MEAN                         59.       10.1      0.005       0.00       0.21
 MINIMUM                      38.        2.8                  0.00       0.16
 DATE OF MINIMUM       1991-04-09 1992-01-21            1991-01-22 1991-08-13
 10TH PERCENTILE              42.        3.0                  0.00       0.16
 MEDIAN                       56.        7.4                  0.00       0.19
 90TH PERCENTILE              72.       18.4                  0.00       0.28
 MAXIMUM                      83.       20.9                  0.00       0.35
 DATE OF MAXIMUM       1992-01-21 1991-09-10            1991-04-09 1991-03-12
 STANDARD DEVIATION           12.        6.5                  0.00       0.06




                              NH3         O2        BOD        ALK         pH
                                        DISS                 TOTAL           
                            07554      08102      08201      10102      10301
                           mg/L N    mg/L O2    mg/L O2       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         15         15         14         15
 MEAN                        0.01       11.5         0.      18.04        7.2
 MINIMUM                     0.00        9.3         0.      11.00        6.9
 DATE OF MINIMUM       1991-04-09 1991-09-10 1991-10-15 1991-04-09 1991-09-10
 10TH PERCENTILE             0.00        9.4         0.      12.20        6.9
 MEDIAN                      0.00       11.3         0.      18.75        7.2
 90TH PERCENTILE             0.04       13.5         0.      21.05        7.3
 MAXIMUM                     0.04       13.8         0.      24.40        7.4
 DATE OF MAXIMUM       1992-03-03 1991-01-22 1991-03-12 1992-01-21 1991-11-19
 STANDARD DEVIATION          0.02        1.6         0.       3.56        0.2




                         SUSP SOL    P ORTHO         Cl       PCBS         Cr
                          105 DEG      TOTAL       DISS                 TOTAL
                            10401      15205      17204      18165      24002
                             mg/L     mg/L P    mg/L Cl       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          3         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         15         14          0          0
 MEAN                          5.      0.005         3.      0.100      0.005
 MINIMUM                       1.      0.002         1.                 0.001
 DATE OF MINIMUM       1991-10-15 1991-11-19 1991-04-09            1991-06-11
 10TH PERCENTILE               2.      0.002         1.                 0.003
 MEDIAN                        4.      0.004         2.                 0.005
 90TH PERCENTILE              10.      0.008         4.                 0.005
 MAXIMUM                      18.      0.009         4.                 0.005
 DATE OF MAXIMUM       1991-04-09 1991-07-23 1992-01-21            1991-05-14
 STANDARD DEVIATION            4.      0.002         1.                 0.001



                               Mn         Fe         Cu         Zn         Zn
                            TOTAL      TOTAL      TOTAL      TOTAL       DISS
                            25004      26004      29006      30004      30104
                          mg/L Mn    mg/L Fe    mg/L Cu    mg/L Zn    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0          2          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         15         13         15         13
 MEAN                        0.03       0.20      0.002      0.003      0.003
 MINIMUM                     0.01       0.08      0.001      0.002      0.001
 DATE OF MINIMUM       1991-07-23 1991-11-19 1991-01-22 1991-07-23 1991-07-23
 10TH PERCENTILE             0.01       0.08      0.001      0.002      0.002
 MEDIAN                      0.02       0.17      0.001      0.003      0.002
 90TH PERCENTILE             0.06       0.37      0.003      0.005      0.004
 MAXIMUM                     0.10       0.52      0.004      0.005      0.005
 DATE OF MAXIMUM       1991-03-12 1991-04-09 1992-02-18 1992-01-21 1992-01-21
 STANDARD DEVIATION          0.03       0.12      0.001      0.001      0.001




                               As         Se   FAEC COL         Cd         Cd
                            TOTAL      TOTAL                 TOTAL       DISS
                            33007      34002      36011      48001      48101
                          mg/L As    mg/L Se   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        3          3          0         15         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         15          0          0
 MEAN                       0.001      0.001       237.      0.001      0.001
 MINIMUM                                            30.      0.001      0.001
 DATE OF MINIMUM                             1991-06-11 1991-01-22 1991-01-22
 10TH PERCENTILE                                    35.      0.001      0.001
 MEDIAN                                            210.      0.001      0.001
 90TH PERCENTILE                                   465.      0.001      0.001
 MAXIMUM                                           820.      0.001      0.001
 DATE OF MAXIMUM                             1991-10-15 1992-03-03 1992-03-03
 STANDARD DEVIATION                                218.      0.000      0.000




                               Ba         Pb         Pb       INST
                            TOTAL      TOTAL       DISS     DISCHG
                            80011      82001      82101      97160
                          ug/L Hg    mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        5         15         15          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0         15
 MEAN                       0.500      0.002      0.002      111.9
 MINIMUM                    0.500      0.002      0.002       80.0
 DATE OF MINIMUM       1991-02-12 1991-01-22 1991-01-22 1991-02-12
 10TH PERCENTILE                       0.002      0.002       80.5
 MEDIAN                     0.500      0.002      0.002       90.0
 90TH PERCENTILE                       0.002      0.002      145.5
 MAXIMUM                    0.500      0.002      0.002      210.0
 DATE OF MAXIMUM       1992-02-18 1992-03-03 1992-03-03 1991-04-09
 STANDARD DEVIATION         0.000      0.000      0.000       37.6





 STATION - KISO RIVER AT INUYAMA                    STATION NO. 080010
 COUNTRY - JAPAN                                    DEPTH(M)       3.4
 LOCATION - OCT. 2  LAT. 35/23/42  LONG. 136/57/49  ELEVATION(M)  36.5
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-08 TO 1993-12-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP       TEMP    PHENOLS         CN
                             COND                                            
                            02041      02061      02062      06532      06606
                            us/cm      deg C      deg C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0         21         14
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36          1         35          0          1
 MEAN                         63.        5.9       12.9      5.000      0.005
 MINIMUM                      38.                   4.5      5.000      0.005
 DATE OF MINIMUM       1993-07-06            1991-02-05 1992-04-07 1991-01-08
 10TH PERCENTILE              47.                   5.1      5.000      0.005
 MEDIAN                       64.                  12.7      5.000      0.005
 90TH PERCENTILE              79.                  20.3      5.000      0.005
 MAXIMUM                      84.                  23.1      5.000      0.005
 DATE OF MAXIMUM       1991-02-05            1992-08-04 1993-12-07 1992-03-10
 STANDARD DEVIATION           12.                   5.6      0.000      0.000




                           NO3NO2      NO2-N      NO3-N        NH3        NH3
                                                                             
                            07105      07207      07313      07554      07555
                           mg/L N     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         15         15         15         21
 MEAN                        0.35       0.00       0.33       0.06       0.06
 MINIMUM                     0.29       0.00       0.28       0.01       0.03
 DATE OF MINIMUM       1993-06-01 1991-10-08 1991-08-06 1991-12-03 1993-09-16
 10TH PERCENTILE             0.31       0.00       0.28       0.02       0.03
 MEDIAN                      0.35       0.00       0.31       0.05       0.06
 90TH PERCENTILE             0.40       0.01       0.38       0.08       0.09
 MAXIMUM                     0.42       0.01       0.45       0.13       0.12
 DATE OF MAXIMUM       1992-10-06 1992-01-07 1991-06-04 1991-01-08 1993-05-11
 STANDARD DEVIATION          0.03       0.00       0.05       0.03       0.02




                               O2        BOD        ALK         pH         pH
                             DISS                 TOTAL                      
                            08102      08201      10102      10301      10302
                          mg/L O2    mg/L O2       mg/L   pH UNITS   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         34         36         15         21
 MEAN                        10.7         1.      15.34        7.2        7.2
 MINIMUM                      8.2         0.       9.30        7.1        7.0
 DATE OF MINIMUM       1992-08-04 1993-08-03 1993-07-06 1991-12-03 1993-07-06
 10TH PERCENTILE              8.8         0.      11.48        7.1        7.1
 MEDIAN                      10.6         1.      15.90        7.1        7.2
 90TH PERCENTILE             13.2         1.      18.09        7.3        7.4
 MAXIMUM                     14.2         1.      20.30        7.4        7.4
 DATE OF MAXIMUM       1991-03-05 1992-02-04 1992-08-04 1991-05-07 1993-06-01
 STANDARD DEVIATION           1.6         0.       2.73        0.1        0.1




                         SUSP SOL    P ORTHO         Cl       PCBS         Cr
                          105 DEG      TOTAL       DISS                 TOTAL
                            10401      15205      17204      18165      24002
                             mg/L     mg/L P    mg/L Cl       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          2         36
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       34         15         15          0          0
 MEAN                          6.      0.009         4.      0.100      0.005
 MINIMUM                       1.      0.003         2.                 0.005
 DATE OF MINIMUM       1991-01-08 1991-04-02 1991-10-08            1991-01-08
 10TH PERCENTILE               2.      0.004         2.                 0.005
 MEDIAN                        4.      0.007         3.                 0.005
 90TH PERCENTILE              10.      0.016         5.                 0.005
 MAXIMUM                      38.      0.021         6.                 0.005
 DATE OF MAXIMUM       1993-07-06 1991-06-04 1991-02-05            1993-12-07
 STANDARD DEVIATION            7.      0.005         1.                 0.000




                               Mn         Mn         Fe         Fe         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      29006
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         18         34         20         34
 MEAN                        0.02       0.01       0.20       0.02      0.002
 MINIMUM                     0.01       0.00       0.06       0.01      0.000
 DATE OF MINIMUM       1992-12-01 1993-07-06 1991-01-08 1992-10-06 1993-10-05
 10TH PERCENTILE             0.01       0.00       0.08       0.01      0.001
 MEDIAN                      0.02       0.01       0.12       0.02      0.002
 90TH PERCENTILE             0.03       0.02       0.24       0.03      0.004
 MAXIMUM                     0.04       0.03       1.20       0.05      0.007
 DATE OF MAXIMUM       1993-07-06 1993-04-06 1993-07-06 1993-02-02 1991-10-08
 STANDARD DEVIATION          0.01       0.01       0.24       0.01      0.002




                               Zn         Zn         As         Se   FAEC COL
                            TOTAL       DISS      TOTAL      TOTAL           
                            30004      30104      33007      34002      36011
                          mg/L Zn    mg/L Zn    mg/L As    mg/L Se   No/100ml


 NO. OF L-FLAGGED VALUES        3          1          5          5          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         35          1          0         15
 MEAN                       0.012      0.009      0.001      0.001      1208.
 MINIMUM                    0.004      0.002      0.001      0.001        20.
 DATE OF MINIMUM       1993-08-03 1993-09-16 1991-02-05 1991-02-05 1991-05-07
 10TH PERCENTILE            0.006      0.005                              20.
 MEDIAN                     0.012      0.009      0.001      0.001       420.
 90TH PERCENTILE            0.017      0.014                            1600.
 MAXIMUM                    0.019      0.017      0.001      0.001     10000.
 DATE OF MAXIMUM       1992-12-01 1992-12-01 1993-08-03 1993-02-02 1991-11-12
 STANDARD DEVIATION         0.004      0.004      0.000      0.000      2494.




                         FAEC COL         Cd         Cd         Ba         Ba
                                       TOTAL       DISS      TOTAL      TOTAL
                            36012      48001      48101      80011      80016
                         No/100ml    mg/L Cd    mg/L Cd    ug/L Hg    ug/L Hg


 NO. OF L-FLAGGED VALUES        0         36         36          5          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20          0          0          0          0
 MEAN                        762.      0.001      0.001      0.500      0.500
 MINIMUM                      40.      0.001      0.001      0.500      0.500
 DATE OF MINIMUM       1992-06-02 1991-01-08 1991-01-08 1991-02-05 1992-05-12
 10TH PERCENTILE              40.      0.001      0.001                      
 MEDIAN                      790.      0.001      0.001      0.500      0.500
 90TH PERCENTILE            1400.      0.001      0.001                      
 MAXIMUM                    2200.      0.001      0.001      0.500      0.500
 DATE OF MAXIMUM       1993-01-12 1993-12-07 1993-12-07 1992-02-04 1993-08-03
 STANDARD DEVIATION          577.      0.000      0.000      0.000      0.000




                               Pb         Pb       INST
                            TOTAL       DISS     DISCHG
                            82001      82101      97160
                          mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES       35         35          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          0         36
 MEAN                       0.002      0.002      298.9
 MINIMUM                    0.002      0.002      106.0
 DATE OF MINIMUM       1991-01-08 1991-01-08 1991-02-05
 10TH PERCENTILE            0.002      0.002      120.8
 MEDIAN                     0.002      0.002      217.5
 90TH PERCENTILE            0.002      0.002      525.9
 MAXIMUM                    0.002      0.002     1079.0
 DATE OF MAXIMUM       1993-12-07 1993-12-07 1993-07-06
 STANDARD DEVIATION         0.000      0.000      210.8





 STATION - KISO RIVER AT ASAHI                      STATION NO. 080011
 COUNTRY - JAPAN                                    DEPTH(M)       2.2
 LOCATION - OCT. 2  LAT. 35/16/46  LONG. 136/43/07  ELEVATION(M)   3.5
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-07 TO 1993-12-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP       TEMP    PHENOLS         CN
                             COND                                            
                            02041      02061      02062      06532      06606
                            us/cm      deg C      deg C       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          0         20         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       34         15         19          0          0
 MEAN                         68.       11.7       13.3      5.000      0.005
 MINIMUM                      38.        3.1        5.1      5.000      0.005
 DATE OF MINIMUM       1993-07-06 1991-01-07 1993-03-02 1992-04-07 1991-01-07
 10TH PERCENTILE              48.        3.8        5.2      5.000      0.005
 MEDIAN                       70.        8.4       12.9      5.000      0.005
 90TH PERCENTILE              85.       20.4       20.2      5.000      0.005
 MAXIMUM                      91.       24.1       21.8      5.000      0.005
 DATE OF MAXIMUM       1992-11-10 1991-09-03 1992-07-07 1993-12-07 1992-03-10
 STANDARD DEVIATION           13.        7.0        5.4      0.000      0.000




                           NO3NO2      NO2-N      NO3-N        NH3        NH3
                                                                             
                            07105      07207      07313      07555      07556
                           mg/L N     mg/L N     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         15         15         18         15
 MEAN                        0.40       0.01       0.38       0.04       0.06
 MINIMUM                     0.31       0.00       0.30       0.01       0.03
 DATE OF MINIMUM       1993-08-03 1991-07-08 1991-02-04 1992-06-02 1991-10-15
 10TH PERCENTILE             0.32       0.00       0.31       0.01       0.03
 MEDIAN                      0.40       0.01       0.37       0.03       0.05
 90TH PERCENTILE             0.46       0.01       0.46       0.06       0.10
 MAXIMUM                     0.47       0.02       0.50       0.09       0.12
 DATE OF MAXIMUM       1992-10-06 1992-01-07 1992-01-07 1993-06-15 1991-03-04
 STANDARD DEVIATION          0.05       0.00       0.06       0.02       0.03




                               O2        BOD        ALK         pH         pH
                             DISS                 TOTAL                      
                            08102      08201      10102      10301      10302
                          mg/L O2    mg/L O2       mg/L   pH UNITS   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         34         34         15         19
 MEAN                        10.7         1.      15.76        7.3        7.3
 MINIMUM                      8.1         0.      11.00        7.0        7.1
 DATE OF MINIMUM       1993-06-15 1993-10-05 1993-07-06 1991-10-15 1993-07-06
 10TH PERCENTILE              8.4         0.      12.02        7.1        7.2
 MEDIAN                      10.4         1.      15.75        7.3        7.3
 90TH PERCENTILE             12.8         1.      18.30        7.4        7.5
 MAXIMUM                     13.6         2.      19.80        7.6        7.6
 DATE OF MAXIMUM       1991-01-07 1991-10-15 1992-11-10 1991-02-04 1993-12-07
 STANDARD DEVIATION           1.7         0.       2.22        0.1        0.1




                         SUSP SOL    P ORTHO         Cl       PCBS         Cr
                          105 DEG      TOTAL       DISS                 TOTAL
                            10401      15205      17204      18165      24002
                             mg/L     mg/L P    mg/L Cl       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          3         36
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       26         15         15          0          0
 MEAN                          5.      0.009         4.      0.100      0.005
 MINIMUM                       2.      0.003         2.                 0.005
 DATE OF MINIMUM       1991-01-07 1991-01-07 1991-07-08            1991-01-07
 10TH PERCENTILE               3.      0.003         3.                 0.005
 MEDIAN                        4.      0.010         4.                 0.005
 90TH PERCENTILE               7.      0.013         5.                 0.005
 MAXIMUM                      24.      0.016         6.                 0.005
 DATE OF MAXIMUM       1993-08-03 1992-01-07 1991-01-07            1993-12-07
 STANDARD DEVIATION            4.      0.004         1.                 0.000




                               Mn         Mn         Fe         Fe         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      29006
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       34         19         32         19         29
 MEAN                        0.03       0.01       0.23       0.02      0.001
 MINIMUM                     0.01       0.01       0.07       0.01      0.001
 DATE OF MINIMUM       1993-02-02 1992-04-07 1991-01-07 1993-03-02 1991-02-04
 10TH PERCENTILE             0.01       0.01       0.09       0.01      0.001
 MEDIAN                      0.02       0.01       0.15       0.02      0.001
 90TH PERCENTILE             0.04       0.02       0.28       0.03      0.002
 MAXIMUM                     0.05       0.02       1.60       0.03      0.004
 DATE OF MAXIMUM       1991-06-10 1993-05-11 1993-07-06 1993-08-03 1991-12-10
 STANDARD DEVIATION          0.01       0.00       0.30       0.01      0.001




                               Zn         Zn         As         As         Se
                            TOTAL       DISS      TOTAL      TOTAL      TOTAL
                            30004      30104      33003      33007      34002
                          mg/L Zn    mg/L Zn    mg/L As    mg/L As    mg/L Se


 NO. OF L-FLAGGED VALUES        0          0          0          1          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         32          3          1          0
 MEAN                       0.012      0.004      0.001      0.001      0.001
 MINIMUM                    0.004      0.000                            0.001
 DATE OF MINIMUM       1991-10-15 1991-08-06                       1991-02-04
 10TH PERCENTILE            0.004      0.000                                 
 MEDIAN                     0.008      0.004                            0.001
 90TH PERCENTILE            0.013      0.008                                 
 MAXIMUM                    0.100      0.012                            0.001
 DATE OF MAXIMUM       1991-12-10 1991-03-04                       1993-02-02
 STANDARD DEVIATION         0.018      0.003                            0.000




                         FAEC COL   FAEC COL         Cd         Cd         Ba
                                                  TOTAL       DISS      TOTAL
                            36011      36012      48001      48101      80011
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0         36         36          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          9          0          0          0
 MEAN                        118.        80.      0.001      0.001      0.500
 MINIMUM                       2.         8.      0.001      0.001      0.500
 DATE OF MINIMUM       1991-02-04 1993-03-02 1991-01-07 1991-01-07 1991-02-04
 10TH PERCENTILE               4.                 0.001      0.001           
 MEDIAN                       63.        45.      0.001      0.001      0.500
 90TH PERCENTILE             305.                 0.001      0.001           
 MAXIMUM                     470.       340.      0.001      0.001      0.500
 DATE OF MAXIMUM       1991-08-06 1992-11-10 1993-12-07 1993-12-07 1992-02-04
 STANDARD DEVIATION          141.       103.      0.000      0.000      0.000




                               Ba         Pb         Pb       INST
                            TOTAL      TOTAL       DISS     DISCHG
                            80016      82001      82101      97160
                          ug/L Hg    mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        5         36         36          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0         36
 MEAN                       1.400      0.002      0.002      258.3
 MINIMUM                    0.500      0.002      0.002       77.0
 DATE OF MINIMUM       1992-05-12 1991-01-07 1991-01-07 1992-08-04
 10TH PERCENTILE                       0.002      0.002       94.8
 MEDIAN                     0.500      0.002      0.002      193.0
 90TH PERCENTILE                       0.002      0.002      453.6
 MAXIMUM                    5.000      0.002      0.002     1482.0
 DATE OF MAXIMUM       1992-11-10 1993-12-07 1993-12-07 1993-07-06
 STANDARD DEVIATION         2.012      0.000      0.000      243.0





 STATION - LAKE BIWA OFF MIIDERA                    STATION NO. 080012
 COUNTRY - JAPAN                                    DEPTH(M)       2.7
 LOCATION - OCT. 2  LAT. 35/00/45  LONG. 135/51/56  ELEVATION(M)  84.4
 REGIONAL CENTRE - WPRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-23 TO 1992-03-25

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC         CN      NO2-N
                             COND                                            
                            02041      02061      06001      06606      07207
                            us/cm      deg C     mg/L C    mg/L Cn     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          7          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16          8          0         16
 MEAN                        119.       14.9         2.      0.010       0.01
 MINIMUM                     112.        6.7         2.      0.010       0.00
 DATE OF MINIMUM       1991-01-23 1991-02-20 1992-01-22 1991-02-20 1991-08-21
 10TH PERCENTILE             113.        6.9                             0.00
 MEDIAN                      116.       12.5         2.      0.010       0.00
 90TH PERCENTILE             127.       26.1                             0.01
 MAXIMUM                     139.       27.9         2.      0.010       0.03
 DATE OF MAXIMUM       1991-01-23 1991-08-21 1991-07-10 1992-02-19 1991-01-23
 STANDARD DEVIATION            7.        7.7         0.      0.000       0.01




                            NO3-N        NH3         O2        BOD     PERM V
                                                   DISS                      
                            07313      07555      08101      08201      08401
                           mg/L N     mg/L N    mg/L O2    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         16         16         10
 MEAN                        0.22       0.09       10.2         1.         1.
 MINIMUM                     0.01       0.03        7.8         1.         1.
 DATE OF MINIMUM       1991-09-18 1991-06-19 1991-08-21 1992-03-25 1992-01-22
 10TH PERCENTILE             0.01       0.03        8.0         1.         1.
 MEDIAN                      0.24       0.09       10.6         1.         1.
 90TH PERCENTILE             0.35       0.12       11.4         2.         2.
 MAXIMUM                     0.62       0.34       11.6         2.         2.
 DATE OF MAXIMUM       1991-01-23 1991-01-23 1992-03-25 1991-04-10 1991-10-16
 STANDARD DEVIATION          0.16       0.07        1.2         0.         0.




                                F        ALK         pH   SUSP SOL         Na
                             DISS      TOTAL               105 DEG       DISS
                            09105      10102      10302      10401      11102
                           mg/L F       mg/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7         16         16         15         11
 MEAN                         0.1      29.39        7.8         6.         7.
 MINIMUM                      0.1      27.60        7.3         1.         6.
 DATE OF MINIMUM       1992-02-19 1991-06-19 1992-02-19 1991-02-20 1991-07-10
 10TH PERCENTILE                       27.72        7.4         2.         6.
 MEDIAN                       0.1      29.10        7.6         4.         7.
 90TH PERCENTILE                       31.36        8.6        11.         9.
 MAXIMUM                      0.1      32.70        8.8        13.        10.
 DATE OF MAXIMUM       1991-06-19 1991-11-13 1991-06-19 1991-01-23 1991-01-23
 STANDARD DEVIATION           0.0       1.59        0.5         4.         1.




                               Mg    P ORTHO          P   SULPHATE         Cl
                             DISS      TOTAL      TOTAL                  DISS
                            12103      15205      15405      16306      17201
                          mg/L Mg     mg/L P     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16          8          9          9         16
 MEAN                          2.      0.019      3.846        11.         9.
 MINIMUM                       2.      0.010      0.060         9.         8.
 DATE OF MINIMUM       1991-02-20 1991-01-23 1991-03-13 1991-01-23 1991-10-16
 10TH PERCENTILE               2.                                          8.
 MEDIAN                        2.      0.010      0.080        11.         9.
 90TH PERCENTILE               3.                                         10.
 MAXIMUM                       4.      0.050     34.000        13.        10.
 DATE OF MAXIMUM       1991-01-23 1991-07-10 1991-01-23 1991-01-23 1991-01-23
 STANDARD DEVIATION            1.      0.018     11.308         1.         1.




                           ALDRIN   DIELDRIN       PCBS   ATRAZINE          K
                                                                         DISS
                            18130      18150      18165      18415      19105
                             ug/L       ug/L       ug/L       ug/L     mg/L K


 NO. OF L-FLAGGED VALUES        1          1          1          6          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          4         16
 MEAN                       0.001      0.001      0.500        0.0        1.7
 MINIMUM                                                       0.0        1.1
 DATE OF MINIMUM                                        1991-04-10 1991-02-20
 10TH PERCENTILE                                               0.0        1.1
 MEDIAN                                                        0.0        1.5
 90TH PERCENTILE                                               0.0        2.1
 MAXIMUM                                                       0.0        3.5
 DATE OF MAXIMUM                                        1992-03-25 1991-06-19
 STANDARD DEVIATION                                            0.0        0.6




                               Ca         Cr         Mn         Fe         Cu
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            20103      24002      25004      26004      29006
                          mg/L Ca    mg/L Cr    mg/L Mn    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          7          0          0          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16          0          7          7          0
 MEAN                      11.287      0.010       0.02       0.12      0.010
 MINIMUM                    9.800      0.010       0.01       0.03      0.010
 DATE OF MINIMUM       1991-06-19 1991-02-20 1991-02-20 1991-10-16 1991-02-20
 10TH PERCENTILE            9.800                                            
 MEDIAN                    11.200      0.010       0.01       0.12      0.010
 90TH PERCENTILE           12.160                                            
 MAXIMUM                   12.400      0.010       0.03       0.24      0.010
 DATE OF MAXIMUM       1991-11-13 1992-02-19 1991-08-21 1991-08-21 1992-02-19
 STANDARD DEVIATION         0.748      0.000       0.01       0.07      0.000




                               Zn         As   COLIFORM         Cd         Ba
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            30004      33003      36001      48001      80011
                          mg/L Zn    mg/L As   No/100ml    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        3          7          0          7          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          0          9          0          0
 MEAN                       0.011      0.011      2936.      0.010      0.500
 MINIMUM                    0.010      0.010        23.      0.010      0.500
 DATE OF MINIMUM       1991-02-20 1991-02-20 1991-03-13 1991-02-20 1991-02-20
 10TH PERCENTILE                                                             
 MEDIAN                     0.010      0.010       150.      0.010      0.500
 90TH PERCENTILE                                                             
 MAXIMUM                    0.020      0.016     23000.      0.010      0.500
 DATE OF MAXIMUM       1991-08-21 1992-02-19 1991-01-23 1992-02-19 1992-02-19
 STANDARD DEVIATION         0.004      0.002      7562.      0.000      0.000




                               Pb
                            TOTAL
                            82001
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        7
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        0
 MEAN                       0.010
 MINIMUM                    0.010
 DATE OF MINIMUM       1991-02-20
 10TH PERCENTILE                 
 MEDIAN                     0.010
 90TH PERCENTILE                 
 MAXIMUM                    0.010
 DATE OF MAXIMUM       1992-02-19
 STANDARD DEVIATION         0.000





 STATION - YODO RIVER AT HIRAKATA BRIDGE            STATION NO. 080013
 COUNTRY - JAPAN                                    DEPTH(M)       3.0
 LOCATION - OCT. 2  LAT. 34/48/00  LONG. 135/37/58  ELEVATION(M)   6.9
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-23 TO 1992-03-25

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC         CN      NO2-N
                             COND                                            
                            02041      02061      06001      06606      07207
                            us/cm      deg C     mg/L C    mg/L Cn     mg/L N


 NO. OF L-FLAGGED VALUES        1          1          0          7          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       14         14          8          0         15
 MEAN                        152.       14.8         2.      0.010       0.03
 MINIMUM                     129.        6.0         2.      0.010       0.02
 DATE OF MINIMUM       1991-10-16 1991-02-20 1991-03-13 1991-02-20 1991-06-19
 10TH PERCENTILE             130.        6.6                             0.02
 MEDIAN                      147.       13.6         2.      0.010       0.03
 90TH PERCENTILE             172.       24.8                             0.05
 MAXIMUM                     183.       27.5         3.      0.010       0.05
 DATE OF MAXIMUM       1992-02-19 1991-08-21 1991-11-13 1992-02-19 1992-03-25
 STANDARD DEVIATION           18.        7.4         0.      0.000       0.01




                            NO3-N        NH3         O2        BOD     PERM V
                                                   DISS                      
                            07313      07555      08101      08201      08401
                           mg/L N     mg/L N    mg/L O2    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         15         15         15         15
 MEAN                        0.92       0.39        8.9         2.         2.
 MINIMUM                     0.56       0.10        6.2         1.         1.
 DATE OF MINIMUM       1991-06-19 1991-06-19 1991-08-21 1991-07-10 1991-02-20
 10TH PERCENTILE             0.59       0.12        6.6         1.         1.
 MEDIAN                      0.88       0.37        9.5         2.         2.
 90TH PERCENTILE             1.17       0.70       10.5         3.         2.
 MAXIMUM                     1.61       0.77       10.8         4.         2.
 DATE OF MAXIMUM       1992-03-25 1992-03-25 1991-02-20 1992-03-25 1992-03-25
 STANDARD DEVIATION          0.27       0.21        1.4         1.         0.




                                F        ALK         pH   SUSP SOL         Na
                             DISS      TOTAL               105 DEG       DISS
                            09105      10102      10302      10401      11102
                           mg/L F       mg/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7         15         15         14         10
 MEAN                         0.1      30.78        7.4        19.        11.
 MINIMUM                      0.1      26.60        7.2         8.         8.
 DATE OF MINIMUM       1991-02-20 1991-04-10 1991-12-18 1992-01-22 1991-07-10
 10TH PERCENTILE                       26.85        7.2         9.         8.
 MEDIAN                       0.1      31.80        7.4        20.        10.
 90TH PERCENTILE                       34.40        7.4        30.        15.
 MAXIMUM                      0.1      35.70        7.5        35.        18.
 DATE OF MAXIMUM       1991-06-19 1992-02-19 1991-06-19 1991-10-16 1992-01-22
 STANDARD DEVIATION           0.0       3.19        0.1         8.         3.




                               Mg    P ORTHO          P   SULPHATE         Cl
                             DISS      TOTAL      TOTAL                  DISS
                            12103      15205      15405      16306      17201
                          mg/L Mg     mg/L P     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          8          8          8         15
 MEAN                          2.      0.190      0.356        16.        12.
 MINIMUM                       1.      0.050      0.230        13.         8.
 DATE OF MINIMUM       1992-02-19 1991-01-23 1991-03-13 1991-03-13 1991-10-16
 10TH PERCENTILE               1.                                          9.
 MEDIAN                        2.      0.195      0.355        17.        11.
 90TH PERCENTILE               2.                                         14.
 MAXIMUM                       3.      0.340      0.450        20.        15.
 DATE OF MAXIMUM       1991-09-18 1991-07-10 1992-03-25 1992-01-22 1992-02-19
 STANDARD DEVIATION            0.      0.093      0.070         2.         2.




                           ALDRIN   DIELDRIN       PCBS   ATRAZINE          K
                                                                         DISS
                            18130      18150      18165      18415      19105
                             ug/L       ug/L       ug/L       ug/L     mg/L K


 NO. OF L-FLAGGED VALUES        1          1          1          7          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          2         15
 MEAN                       0.001      0.001      0.500        0.0        2.3
 MINIMUM                                                       0.0        1.3
 DATE OF MINIMUM                                        1991-04-10 1991-02-20
 10TH PERCENTILE                                                          1.4
 MEDIAN                                                        0.0        2.3
 90TH PERCENTILE                                                          2.9
 MAXIMUM                                                       0.0        4.3
 DATE OF MAXIMUM                                        1992-03-25 1991-06-19
 STANDARD DEVIATION                                            0.0        0.7




                               Ca         Cr         Mn         Fe         Cu
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            20103      24002      25004      26004      29006
                          mg/L Ca    mg/L Cr    mg/L Mn    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          7          0          1          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          0          7          6          2
 MEAN                      12.213      0.010       0.04       0.38      0.010
 MINIMUM                   10.600      0.010       0.03       0.01      0.010
 DATE OF MINIMUM       1991-10-16 1991-02-20 1991-02-20 1991-02-20 1991-02-20
 10TH PERCENTILE           10.700                                            
 MEDIAN                    12.000      0.010       0.03       0.32      0.010
 90TH PERCENTILE           13.000                                            
 MAXIMUM                   15.200      0.010       0.07       1.12      0.010
 DATE OF MAXIMUM       1992-02-19 1992-02-19 1991-04-10 1991-04-10 1992-02-19
 STANDARD DEVIATION         1.125      0.000       0.01       0.35      0.000




                               Zn         As   COLIFORM         Cd         Ba
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            30004      33003      36001      48001      80011
                          mg/L Zn    mg/L As   No/100ml    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          7          0          7          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          0          8          0          0
 MEAN                       0.013      0.011     22788.      0.010      0.500
 MINIMUM                    0.010      0.010      9300.      0.010      0.500
 DATE OF MINIMUM       1991-02-20 1991-02-20 1991-03-13 1991-02-20 1991-02-20
 10TH PERCENTILE                                                             
 MEDIAN                     0.010      0.010     23000.      0.010      0.500
 90TH PERCENTILE                                                             
 MAXIMUM                    0.020      0.015     43000.      0.010      0.500
 DATE OF MAXIMUM       1992-02-19 1991-08-21 1991-09-18 1992-02-19 1992-02-19
 STANDARD DEVIATION         0.005      0.002      9690.      0.000      0.000




                               Pb
                            TOTAL
                            82001
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        7
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        0
 MEAN                       0.010
 MINIMUM                    0.010
 DATE OF MINIMUM       1991-02-20
 10TH PERCENTILE                 
 MEDIAN                     0.010
 90TH PERCENTILE                 
 MAXIMUM                    0.010
 DATE OF MAXIMUM       1992-02-19
 STANDARD DEVIATION         0.000





 STATION - OHTA RIVER AT HESAKA                     STATION NO. 080014
 COUNTRY - JAPAN                                    DEPTH(M)       1.0
 LOCATION - OCT. 2  LAT. 34/26/13  LONG. 132/29/26  ELEVATION(M)   5.6
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-07 TO 1992-03-25

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP         CN   CHLORO A     N KJEL
                             COND                                            
                            02041      02061      06606      06711      07001
                            us/cm      deg C    mg/L Cn       mg/L     mg/L N


 NO. OF L-FLAGGED VALUES        0          0         15          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         30          0         12          3
 MEAN                         70.       13.0      0.005     0.0021        0.1
 MINIMUM                      51.        3.5      0.005     0.0007           
 DATE OF MINIMUM       1991-04-10 1991-02-25 1991-01-07 1991-08-07           
 10TH PERCENTILE              58.        4.6      0.005     0.0007           
 MEDIAN                       70.       10.9      0.005     0.0019           
 90TH PERCENTILE              80.       23.5      0.005     0.0037           
 MAXIMUM                      90.       25.0      0.005     0.0039           
 DATE OF MAXIMUM       1992-01-29 1991-09-02 1992-03-04 1992-03-04           
 STANDARD DEVIATION            9.        7.2      0.000     0.0011           




                            NO2-N      NO3-N        NH3         O2        BOD
                                                              DISS           
                            07207      07313      07556      08101      08201
                           mg/L N     mg/L N     mg/L N    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         30         30         30         30
 MEAN                        0.00       0.45       0.03       10.7         1.
 MINIMUM                     0.00       0.36       0.01        8.3         0.
 DATE OF MINIMUM       1991-03-25 1991-10-23 1991-12-02 1991-08-21 1991-08-07
 10TH PERCENTILE             0.00       0.37       0.02        8.4         0.
 MEDIAN                      0.00       0.44       0.03       10.8         1.
 90TH PERCENTILE             0.00       0.55       0.05       12.5         1.
 MAXIMUM                     0.01       0.59       0.06       13.1         1.
 DATE OF MAXIMUM       1991-12-02 1992-03-25 1992-02-26 1991-02-25 1992-01-29
 STANDARD DEVIATION          0.00       0.07       0.01        1.6         0.




                                F        ALK         pH   SUSP SOL         Na
                             DISS      TOTAL               105 DEG       DISS
                            09110      10102      10301      10401      11102
                           mg/L F       mg/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES       11          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4         30         30         30         15
 MEAN                         0.1      14.61        7.3         3.         6.
 MINIMUM                      0.1       9.90        7.2         0.         5.
 DATE OF MINIMUM       1991-01-07 1991-03-06 1991-01-07 1991-02-04 1991-03-06
 10TH PERCENTILE              0.1      10.40        7.2         1.         5.
 MEDIAN                       0.1      14.15        7.3         3.         6.
 90TH PERCENTILE              0.1      18.30        7.4         6.         8.
 MAXIMUM                      0.1      19.60        7.6         9.         8.
 DATE OF MAXIMUM       1992-03-04 1991-09-02 1991-06-26 1991-03-06 1992-01-29
 STANDARD DEVIATION           0.0       2.93        0.1         2.         1.



                               Mg         Si          P    P ORTHO          P
                             DISS   REACTIVE       DISS      TOTAL      TOTAL
                            12103      14101      15103      15205      15405
                          mg/L Mg   mg/LSiO2     mg/L P     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         12         12          3          3
 MEAN                          1.      11.17      0.009      0.007      0.024
 MINIMUM                       1.       9.10      0.005                      
 DATE OF MINIMUM       1991-04-10 1992-02-12 1992-02-12                      
 10TH PERCENTILE               1.       9.28      0.005                      
 MEDIAN                        1.      11.20      0.009                      
 90TH PERCENTILE               1.      12.11      0.012                      
 MAXIMUM                       1.      12.90      0.013                      
 DATE OF MAXIMUM       1991-12-02 1991-09-02 1991-08-07                      
 STANDARD DEVIATION            0.       1.00      0.002                      




                                P   SULPHATE         Cl        DDT     ALDRIN
                             PART                  DISS      TOTAL           
                            15901      16306      17204      18002      18130
                           mg/L P   mg/L SO4    mg/L Cl       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          6          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         15         30          0          0
 MEAN                       0.382         5.         7.      0.100      0.010
 MINIMUM                    0.070         3.         5.      0.100      0.010
 DATE OF MINIMUM       1991-10-02 1991-06-19 1991-07-24 1991-02-04 1991-02-04
 10TH PERCENTILE            0.116         3.         6.                      
 MEDIAN                     0.385         4.         7.      0.100      0.010
 90TH PERCENTILE            0.555         6.        10.                      
 MAXIMUM                    0.600         6.        12.      0.100      0.010
 DATE OF MAXIMUM       1992-01-29 1991-05-15 1992-02-26 1992-02-12 1992-02-12
 STANDARD DEVIATION         0.140         1.         2.      0.000      0.000




                         DIELDRIN       PCBS          K         Ca         Cr
                                                   DISS       DISS      TOTAL
                            18150      18165      19102      20101      24002
                             ug/L       ug/L     mg/L K    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        6          5          0          0         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         15         15          0
 MEAN                       0.100      0.500        0.9      5.460      0.005
 MINIMUM                    0.100      0.500        0.7      4.200      0.005
 DATE OF MINIMUM       1991-02-04 1991-02-04 1991-03-06 1991-03-06 1991-01-07
 10TH PERCENTILE                                    0.7      4.200      0.005
 MEDIAN                     0.100      0.500        1.0      5.600      0.005
 90TH PERCENTILE                                    1.0      6.650      0.005
 MAXIMUM                    0.100      0.500        1.2      6.800      0.005
 DATE OF MAXIMUM       1992-02-12 1991-12-02 1991-10-02 1991-09-02 1992-03-04
 STANDARD DEVIATION         0.000      0.000        0.2      0.872      0.000





                               Mn         Mn         Fe         Fe         Ni
                            TOTAL       DISS      TOTAL       DISS       DISS
                            25004      25104      26002      26102      28101
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        0          7          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          5         15         11         12
 MEAN                        0.02       0.01       0.16       0.02      0.000
 MINIMUM                     0.01       0.01       0.07       0.01      0.000
 DATE OF MINIMUM       1991-02-04 1991-04-10 1991-01-07 1992-01-29 1991-04-10
 10TH PERCENTILE             0.01       0.01       0.07       0.01      0.000
 MEDIAN                      0.02       0.01       0.13       0.02      0.000
 90TH PERCENTILE             0.02       0.01       0.25       0.02      0.000
 MAXIMUM                     0.03       0.01       0.37       0.02      0.000
 DATE OF MAXIMUM       1991-12-02 1992-03-04 1991-03-06 1991-12-02 1992-03-04
 STANDARD DEVIATION          0.01       0.00       0.09       0.00      0.000




                               Cu         Zn         Zn         As         As
                            TOTAL      TOTAL       DISS      TOTAL       DISS
                            29006      30004      30104      33007      33104
                          mg/L Cu    mg/L Zn    mg/L Zn    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES       15         13         12         14         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          2          0          1          0
 MEAN                       0.005      0.005      0.005      0.005      0.005
 MINIMUM                    0.005      0.005      0.005      0.005      0.005
 DATE OF MINIMUM       1991-01-07 1991-01-07 1991-04-10 1991-01-07 1991-04-10
 10TH PERCENTILE            0.005      0.005      0.005      0.005      0.005
 MEDIAN                     0.005      0.005      0.005      0.005      0.005
 90TH PERCENTILE            0.005      0.005      0.005      0.005      0.005
 MAXIMUM                    0.005      0.006      0.005      0.005      0.005
 DATE OF MAXIMUM       1992-03-04 1991-05-15 1992-03-04 1992-03-04 1992-03-04
 STANDARD DEVIATION         0.000      0.000      0.000      0.000      0.000




                               Se   COLIFORM   FAEC COL         Cd         Cd
                            TOTAL      TOTAL                 TOTAL       DISS
                            34002      36001      36011      48002      48102
                          mg/L Se   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES       15          0          0         15         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         30         30          0          0
 MEAN                       0.001     11853.       483.      0.001      0.001
 MINIMUM                    0.001      1100.        11.      0.001      0.001
 DATE OF MINIMUM       1991-01-07 1991-02-25 1991-10-23 1991-01-07 1991-04-10
 10TH PERCENTILE            0.001      1100.        70.      0.001      0.001
 MEDIAN                     0.001      7900.       230.      0.001      0.001
 90TH PERCENTILE            0.001     23000.      1100.      0.001      0.001
 MAXIMUM                    0.001     70000.      2300.      0.001      0.001
 DATE OF MAXIMUM       1992-03-04 1991-06-19 1992-01-29 1992-03-04 1992-03-04
 STANDARD DEVIATION         0.000     14334.       571.      0.000      0.000




                               Ba         Pb       INST
                            TOTAL      TOTAL     DISCHG
                            80011      82002      97160
                          ug/L Hg    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES       15         15          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          0         30
 MEAN                       0.500      0.005       65.7
 MINIMUM                    0.500      0.005       11.0
 DATE OF MINIMUM       1991-01-07 1991-01-07 1991-11-20
 10TH PERCENTILE            0.500      0.005       12.8
 MEDIAN                     0.500      0.005       49.8
 90TH PERCENTILE            0.500      0.005      151.7
 MAXIMUM                    0.500      0.005      185.3
 DATE OF MAXIMUM       1992-03-04 1992-03-04 1991-10-02
 STANDARD DEVIATION         0.000      0.000       51.5





 STATION - SHINANO RIVER AT KYUZOGOYA               STATION NO. 080015
 COUNTRY - JAPAN                                    DEPTH(M)       2.8
 LOCATION - OCT. 2  LAT. 37/52/00  LONG. 139/02/00  ELEVATION(M)   0.8
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-04-06 TO 1993-12-20

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP   CHLORO A     NO3NO2        NH3
                             COND                                            
                            02041      02061      06711      07105      07556
                            us/cm      deg C       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         63         46         63         63
 MEAN                        122.       13.7     0.0045       0.71       0.12
 MINIMUM                      77.        1.0     0.0020       0.10       0.04
 DATE OF MINIMUM       1992-04-06 1993-01-20 1992-12-07 1992-09-16 1992-08-19
 10TH PERCENTILE              88.        4.3     0.0020       0.49       0.07
 MEDIAN                      124.       14.0     0.0030       0.72       0.11
 90TH PERCENTILE             152.       21.0     0.0060       0.94       0.18
 MAXIMUM                     184.       26.5     0.0310       1.25       0.25
 DATE OF MAXIMUM       1992-10-05 1992-08-19 1992-08-19 1993-08-09 1993-03-17
 STANDARD DEVIATION           25.        6.6     0.0044       0.18       0.05




                          PERCENT         O2        BOD          F        ALK
                           DO SAT       DISS                  DISS      TOTAL
                            08001      08101      08201      09105      10102
                          PERCENT    mg/L O2    mg/L O2     mg/L F       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0         40          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         63         21         23         63
 MEAN                         93.        9.5         2.        0.1      21.75
 MINIMUM                      80.        7.1         1.        0.1      12.50
 DATE OF MINIMUM       1993-08-18 1993-08-18 1992-07-15 1992-04-06 1993-12-06
 10TH PERCENTILE              87.        7.6         1.        0.1      14.00
 MEDIAN                       94.        9.3         2.        0.1      22.00
 90TH PERCENTILE              97.       11.9         2.        0.1      27.85
 MAXIMUM                     100.       12.4         2.        0.1      35.00
 DATE OF MAXIMUM       1993-04-14 1993-02-15 1992-06-17 1993-12-20 1992-10-05
 STANDARD DEVIATION            4.        1.6         1.        0.0       5.29




                               pH   SUSP SOL         Cl         Cr         Mn
                                     105 DEG       DISS      TOTAL      TOTAL
                            10301      10401      17204      24911      25010
                         pH UNITS       mg/L    mg/L Cl    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0         36          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         63         63         27         63
 MEAN                         7.1        23.        11.      0.003       0.08
 MINIMUM                      6.8         6.         5.      0.003       0.04
 DATE OF MINIMUM       1993-08-18 1993-03-17 1993-08-18 1992-04-06 1992-09-16
 10TH PERCENTILE              7.0         7.         7.      0.003       0.05
 MEDIAN                       7.1        14.        10.      0.003       0.06
 90TH PERCENTILE              7.3        52.        14.      0.003       0.10
 MAXIMUM                      7.6       111.        19.      0.006       0.52
 DATE OF MAXIMUM       1992-09-16 1993-07-14 1992-10-05 1992-10-05 1993-07-05
 STANDARD DEVIATION           0.2        24.         3.      0.000       0.07



                               Mn         Fe         Fe         Cu         Zn
                             DISS      TOTAL       DISS      TOTAL      TOTAL
                            25109      26009      26109      29006      30004
                          mg/L Mn    mg/L Fe    mg/L Fe    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0          0         40          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       63         63         63         23         62
 MEAN                        0.05       1.15       0.22      0.010      0.009
 MINIMUM                     0.02       0.52       0.08      0.010      0.005
 DATE OF MINIMUM       1992-09-07 1993-04-19 1992-09-16 1992-04-06 1992-05-11
 10TH PERCENTILE             0.03       0.64       0.14      0.010      0.005
 MEDIAN                      0.04       0.90       0.22      0.010      0.007
 90TH PERCENTILE             0.07       1.94       0.28      0.010      0.016
 MAXIMUM                     0.12       3.80       0.36      0.010      0.023
 DATE OF MAXIMUM       1993-08-18 1993-07-14 1993-06-16 1993-12-20 1993-03-08
 STANDARD DEVIATION          0.02       0.68       0.06      0.000      0.004




                               As   FAEC COL         Cd         Ba         Pb
                            TOTAL                 TOTAL      TOTAL      TOTAL
                            33003      36012      48001      80011      82911
                          mg/L As   No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES       10          0         40         40         40
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         63         23         23         23
 MEAN                       0.001       385.      0.005      0.200      0.005
 MINIMUM                    0.001        40.      0.005      0.200      0.005
 DATE OF MINIMUM       1992-04-15 1993-10-13 1992-04-06 1992-04-06 1992-04-06
 10TH PERCENTILE            0.001       103.      0.005      0.200      0.005
 MEDIAN                     0.001       240.      0.005      0.200      0.005
 90TH PERCENTILE            0.001       885.      0.005      0.200      0.005
 MAXIMUM                    0.002      1400.      0.005      0.200      0.018
 DATE OF MAXIMUM       1993-07-14 1993-05-12 1993-12-20 1993-12-20 1992-09-28
 STANDARD DEVIATION         0.000       350.      0.000      0.000      0.002




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       63
 MEAN                       368.1
 MINIMUM                    138.3
 DATE OF MINIMUM       1992-08-19
 10TH PERCENTILE            229.6
 MEDIAN                     363.3
 90TH PERCENTILE            524.2
 MAXIMUM                    681.1
 DATE OF MAXIMUM       1993-07-14
 STANDARD DEVIATION         114.2





 STATION - ISHIKARI RIVER AT ISHIKARI               STATION NO. 080017
 COUNTRY - JAPAN                                    DEPTH(M)       2.8
 LOCATION - OCT. 2  LAT. 43/07/16  LONG. 141/32/47  ELEVATION(M)   0.6
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1993-01-20 TO 1993-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP   ORG CARB    PHENOLS     NO3NO2
                             COND                  DISS                      
                            02041      02062      06101      06532      07105
                            us/cm      deg C     mg/L C       mg/L     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0         12          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         12         12          0         12
 MEAN                        163.        9.9        4.1      6.250       0.68
 MINIMUM                      91.        0.1        2.1      5.000       0.47
 DATE OF MINIMUM       1993-04-29 1993-12-15 1993-09-22 1993-04-29 1993-04-29
 10TH PERCENTILE              96.        0.2        2.1      5.000       0.48
 MEDIAN                      166.        9.8        3.5      5.000       0.67
 90TH PERCENTILE             212.       19.6        6.4     10.000       0.94
 MAXIMUM                     218.       22.8        7.8     10.000       1.02
 DATE OF MAXIMUM       1993-03-03 1993-07-14 1993-10-20 1993-03-03 1993-10-20
 STANDARD DEVIATION           43.        8.3        1.8      2.261       0.19




                              NH3    PERCENT         O2        BOD        COD
                                      DO SAT       DISS                      
                            07556      08001      08101      08201      08301
                           mg/L N    PERCENT    mg/L O2    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         12         12         12          1
 MEAN                        0.23        98.       11.0         1.         4.
 MINIMUM                     0.05        90.        7.8         1.           
 DATE OF MINIMUM       1993-11-17 1993-08-19 1993-08-19 1993-01-20           
 10TH PERCENTILE             0.05        90.        7.9         1.           
 MEDIAN                      0.13        96.       11.3         1.           
 90TH PERCENTILE             0.47       101.       13.2         2.           
 MAXIMUM                     0.50       114.       13.6         3.           
 DATE OF MAXIMUM       1993-12-15 1993-10-20 1993-12-15 1993-06-16           
 STANDARD DEVIATION          0.19         6.        2.0         1.           




                              ALK         pH   SUSP SOL         Al         Al
                            TOTAL               105 DEG      TOTAL       DISS
                            10101      10302      10401      13011      13111
                             mg/L   pH UNITS       mg/L    mg/L Al    mg/L Al


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         12         12          5          5
 MEAN                       33.55        7.3        30.      1.232      0.172
 MINIMUM                    17.45        7.0         9.      0.550      0.040
 DATE OF MINIMUM       1993-04-29 1993-05-20 1993-09-22 1993-07-14 1993-08-19
 10TH PERCENTILE            17.58        7.0         9.                      
 MEDIAN                     35.20        7.3        15.      1.250      0.130
 90TH PERCENTILE            43.67        7.4        63.                      
 MAXIMUM                    50.50        7.4       115.      1.980      0.340
 DATE OF MAXIMUM       1993-10-20 1993-07-14 1993-05-20 1993-10-20 1993-11-17
 STANDARD DEVIATION         10.53        0.1        33.      0.525      0.140




                               Si          P         Cl       PCBS         Cr
                         REACTIVE      TOTAL       DISS                 TOTAL
                            14101      15405      17207      18165      24002
                         mg/LSiO2     mg/L P    mg/L Cl       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0         12          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         12         12          0          6
 MEAN                        3.52      0.089        14.      0.500      0.575
 MINIMUM                     1.25      0.027         8.      0.500      0.005
 DATE OF MINIMUM       1993-04-29 1993-03-03 1993-04-29 1993-01-20 1993-04-29
 10TH PERCENTILE                       0.028         8.      0.500      0.005
 MEDIAN                      3.00      0.060        14.      0.500      0.050
 90TH PERCENTILE                       0.191        18.      0.500      1.367
 MAXIMUM                     6.40      0.244        21.      0.500      1.980
 DATE OF MAXIMUM       1993-10-20 1993-05-20 1993-03-03 1993-12-15 1993-10-20
 STANDARD DEVIATION          1.94      0.073         4.      0.000      0.711




                               Mn         Mn         Fe         Fe         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      29005
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        3          9          0          7         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          3         12          5          0
 MEAN                        0.09       0.05       1.52       0.20      0.017
 MINIMUM                     0.01       0.01       0.60       0.02      0.010
 DATE OF MINIMUM       1993-07-14 1993-04-29 1993-10-20 1993-04-29 1993-01-20
 10TH PERCENTILE             0.01       0.01       0.60       0.02      0.010
 MEDIAN                      0.10       0.02       1.30       0.10      0.020
 90TH PERCENTILE             0.10       0.10       2.30       0.20      0.020
 MAXIMUM                     0.20       0.10       4.60       1.24      0.020
 DATE OF MAXIMUM       1993-03-03 1993-03-03 1993-05-20 1993-05-20 1993-12-15
 STANDARD DEVIATION          0.05       0.04       1.11       0.33      0.005




                               Cu         Zn         Zn         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            29105      30005      30105      33007      33104
                          mg/L Cu    MG/L ZN    mg/L Zn    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES       12          8          9         11         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          4          3          1          0
 MEAN                       0.017      0.009      0.007      0.002      0.002
 MINIMUM                    0.010      0.005      0.005      0.001      0.001
 DATE OF MINIMUM       1993-01-20 1993-04-29 1993-04-29 1993-04-29 1993-04-29
 10TH PERCENTILE            0.010      0.005      0.005      0.001      0.001
 MEDIAN                     0.020      0.007      0.005      0.001      0.001
 90TH PERCENTILE            0.020      0.017      0.010      0.005      0.005
 MAXIMUM                    0.020      0.023      0.010      0.005      0.005
 DATE OF MAXIMUM       1993-12-15 1993-05-20 1993-03-03 1993-03-03 1993-03-03
 STANDARD DEVIATION         0.005      0.006      0.002      0.002      0.002



                               Se         Se   COLIFORM         Cd         Cd
                            TOTAL       DISS      TOTAL      TOTAL       DISS
                            34002      34102      36001      48002      48102
                          mg/L Se    mg/L Se   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        3          3          0         12         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0         12          0          0
 MEAN                       0.001      0.001      5866.      0.001      0.001
 MINIMUM                                           490.      0.001      0.001
 DATE OF MINIMUM                             1993-10-20 1993-01-20 1993-01-20
 10TH PERCENTILE                                   732.      0.001      0.001
 MEDIAN                                           3000.      0.001      0.001
 90TH PERCENTILE                                  6370.      0.001      0.001
 MAXIMUM                                         34000.      0.001      0.001
 DATE OF MAXIMUM                             1993-06-16 1993-12-15 1993-12-15
 STANDARD DEVIATION                               9045.      0.000      0.000




                               Ba         Hg         Pb         Pb    PHENOLS
                            TOTAL       DISS      TOTAL       DISS           
                            80016      80111      82002      82103      95011
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES       12         12         11         12          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          1          0          0
 MEAN                       0.500      0.500      0.003      0.003        5.0
 MINIMUM                    0.500      0.500      0.001      0.001           
 DATE OF MINIMUM       1993-01-20 1993-01-20 1993-04-29 1993-04-29           
 10TH PERCENTILE            0.500      0.500      0.001      0.001           
 MEDIAN                     0.500      0.500      0.001      0.001           
 90TH PERCENTILE            0.500      0.500      0.010      0.010           
 MAXIMUM                    0.500      0.500      0.010      0.010           
 DATE OF MAXIMUM       1993-12-15 1993-12-15 1993-03-03 1993-03-03           
 STANDARD DEVIATION         0.000      0.000      0.004      0.004           




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       12
 MEAN                       333.6
 MINIMUM                     92.9
 DATE OF MINIMUM       1993-03-03
 10TH PERCENTILE            101.4
 MEDIAN                     207.5
 90TH PERCENTILE            478.3
 MAXIMUM                   1204.0
 DATE OF MAXIMUM       1993-04-29
 STANDARD DEVIATION         303.8





 STATION - KYU-KITAKAMI RIVER AT KANOMATA           STATION NO. 080018
 COUNTRY - JAPAN                                    DEPTH(M)       5.0
 LOCATION - OCT. 2  LAT. 38/29/10  LONG. 141/16/39  ELEVATION(M)   0.1
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-04-22 TO 1993-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP   CHLORO A     NO3NO2     ORG. N
                             COND                                        DISS
                            02041      02061      06711      07105      07403
                            us/cm      deg C       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21         18         21         21
 MEAN                        126.       13.5     0.0042       0.47        0.2
 MINIMUM                     101.        2.3     0.0001       0.28        0.0
 DATE OF MINIMUM       1993-04-21 1993-12-15 1992-04-22 1993-04-21 1992-05-20
 10TH PERCENTILE             106.        2.6     0.0001       0.31        0.1
 MEDIAN                      121.       15.5     0.0042       0.48        0.2
 90TH PERCENTILE             146.       21.4     0.0099       0.55        0.3
 MAXIMUM                     167.       26.8     0.0138       0.83        0.5
 DATE OF MAXIMUM       1993-01-27 1992-08-19 1993-05-26 1993-02-24 1993-09-16
 STANDARD DEVIATION           16.        7.5     0.0038       0.12        0.1




                              NH3    PERCENT         O2        BOD        COD
                                      DO SAT       DISS                      
                            07556      08001      08101      08201      08301
                           mg/L N    PERCENT    mg/L O2    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21         21         21         12
 MEAN                        0.06        93.        9.8         2.         4.
 MINIMUM                     0.01        59.        6.2         1.         2.
 DATE OF MINIMUM       1993-10-27 1992-04-22 1992-04-22 1992-12-02 1992-04-22
 10TH PERCENTILE             0.02        80.        7.2         1.         2.
 MEDIAN                      0.04        92.        9.2         2.         4.
 90TH PERCENTILE             0.08       104.       12.4         2.         6.
 MAXIMUM                     0.30       112.       12.8         3.         8.
 DATE OF MAXIMUM       1993-01-27 1992-08-19 1993-03-17 1993-06-23 1993-02-24
 STANDARD DEVIATION          0.07        11.        2.1         1.         2.




                              ALK         pH   SUSP SOL         Na         Mg
                            TOTAL               105 DEG       DISS       DISS
                            10101      10301      10401      11105      12102
                             mg/L   pH UNITS       mg/L    mg/L Na    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21         21         21         21
 MEAN                       26.25        6.8        19.         9.         3.
 MINIMUM                    18.90        6.6         4.         7.         2.
 DATE OF MINIMUM       1993-04-21 1992-06-10 1992-04-22 1992-06-10 1992-04-22
 10TH PERCENTILE            20.12        6.6         4.         7.         2.
 MEDIAN                     27.00        6.8         9.         9.         3.
 90TH PERCENTILE            32.24        7.0        34.        11.         4.
 MAXIMUM                    35.80        7.3        98.        14.         5.
 DATE OF MAXIMUM       1993-01-27 1992-08-19 1993-06-23 1993-01-27 1993-01-27
 STANDARD DEVIATION          4.49        0.2        22.         2.         1.




                               Al         Al         Al         Al         Si
                            TOTAL       DISS       DISS      TOTAL   REACTIVE
                            13002      13102      13901      13911      14101
                          mg/L Al    mg/L Al    mg/L Al    mg/L Al   mg/LSiO2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1         21         21         21
 MEAN                       0.400      0.380      0.107      0.613      18.62
 MINIMUM                                          0.020      0.100      10.00
 DATE OF MINIMUM                             1992-08-19 1992-11-19 1993-07-21
 10TH PERCENTILE                                  0.020      0.128      10.00
 MEDIAN                                           0.070      0.480      20.00
 90TH PERCENTILE                                  0.252      1.020      24.00
 MAXIMUM                                          0.380      3.700      28.00
 DATE OF MAXIMUM                             1993-12-15 1993-02-24 1993-09-16
 STANDARD DEVIATION                               0.099      0.760       5.65




                                P    P TOTAL   SULPHATE         Cl       PCBS
                            TOTAL       DISS                  DISS           
                            15405      15417      16309      17207      18165
                           mg/L P     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0         21
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21         21         21          0
 MEAN                       0.090      0.045        17.        10.      0.500
 MINIMUM                    0.045      0.016        14.         8.      0.500
 DATE OF MINIMUM       1992-12-02 1993-04-21 1993-06-23 1993-04-21 1992-04-22
 10TH PERCENTILE            0.045      0.024        14.         8.      0.500
 MEDIAN                     0.078      0.045        18.        10.      0.500
 90TH PERCENTILE            0.145      0.058        19.        12.      0.500
 MAXIMUM                    0.228      0.088        22.        15.      0.500
 DATE OF MAXIMUM       1993-06-23 1992-05-20 1993-01-27 1993-01-27 1993-12-15
 STANDARD DEVIATION         0.045      0.016         2.         2.      0.000




                                K         Ca         Cr         Cr         Cr
                             DISS       DISS      TOTAL       DISS       DISS
                            19102      20103      24002      24052      24901
                           mg/L K    mg/L Ca    mg/L Cr    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          1          1         19
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21          0          0          2
 MEAN                         2.2     11.205      0.002      0.002      0.004
 MINIMUM                      1.1      6.600                            0.002
 DATE OF MINIMUM       1993-04-21 1992-05-20                       1993-07-21
 10TH PERCENTILE              1.6      8.050                            0.002
 MEDIAN                       2.1     11.000                            0.005
 90TH PERCENTILE              2.8     13.000                            0.005
 MAXIMUM                      3.6     17.000                            0.005
 DATE OF MAXIMUM       1993-02-24 1993-01-27                       1993-06-23
 STANDARD DEVIATION           0.6      2.268                            0.001




                               Cr         Mn         Mn         Fe         Fe
                            TOTAL      TOTAL       DISS      TOTAL       DISS
                            24911      25004      25104      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES       21          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         21         21         21         21
 MEAN                       0.004       0.08       0.05       1.15       0.28
 MINIMUM                    0.002       0.00       0.02       0.28       0.04
 DATE OF MINIMUM       1993-07-21 1993-10-27 1993-10-27 1993-10-27 1992-10-01
 10TH PERCENTILE            0.002       0.03       0.03       0.45       0.11
 MEDIAN                     0.005       0.07       0.04       0.90       0.22
 90TH PERCENTILE            0.005       0.12       0.08       2.44       0.52
 MAXIMUM                    0.005       0.20       0.08       2.95       0.53
 DATE OF MAXIMUM       1993-06-23 1993-07-21 1993-02-24 1993-02-24 1993-07-21
 STANDARD DEVIATION         0.001       0.04       0.02       0.75       0.16




                               Ni         Ni         Ni         Ni         Cu
                            TOTAL       DISS       DISS      TOTAL      TOTAL
                            28001      28101      28901      28911      29006
                          mg/L Ni    mg/L Ni    mg/L Ni    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        1          1         21         21          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.010      0.010      0.010      0.010      0.010
 MINIMUM                                          0.010      0.010           
 DATE OF MINIMUM                             1992-04-22 1992-04-22           
 10TH PERCENTILE                                  0.010      0.010           
 MEDIAN                                           0.010      0.010           
 90TH PERCENTILE                                  0.010      0.010           
 MAXIMUM                                          0.010      0.010           
 DATE OF MAXIMUM                             1993-12-15 1993-12-15           
 STANDARD DEVIATION                               0.000      0.000           




                               Cu         Cu         Cu         Zn         Zn
                             DISS       DISS      TOTAL      TOTAL       DISS
                            29106      29901      29911      30004      30104
                          mg/L Cu    mg/L Cu    mg/L Cu    mg/L Zn    mg/L Zn


 NO. OF L-FLAGGED VALUES        1         21         21          2         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0         19          9
 MEAN                       0.010      0.010      0.010      0.015      0.007
 MINIMUM                               0.010      0.010      0.005      0.005
 DATE OF MINIMUM                  1992-04-22 1992-04-22 1993-10-27 1992-07-22
 10TH PERCENTILE                       0.010      0.010      0.005      0.005
 MEDIAN                                0.010      0.010      0.013      0.005
 90TH PERCENTILE                       0.010      0.010      0.028      0.014
 MAXIMUM                               0.010      0.010      0.035      0.014
 DATE OF MAXIMUM                  1993-12-15 1993-12-15 1993-07-21 1993-06-23
 STANDARD DEVIATION                    0.000      0.000      0.009      0.004



                               As         As         Se         Se         Se
                            TOTAL       DISS      TOTAL      TOTAL       DISS
                            33007      33104      34002      34007      34102
                          mg/L As    mg/L As    mg/L Se    mg/L Se    mg/L Se


 NO. OF L-FLAGGED VALUES       21         21          1         21         21
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.005      0.005      0.002      0.002      0.002
 MINIMUM                    0.005      0.005                 0.002      0.002
 DATE OF MINIMUM       1992-04-22 1992-04-22            1992-04-22 1992-04-22
 10TH PERCENTILE            0.005      0.005                 0.002      0.002
 MEDIAN                     0.005      0.005                 0.002      0.002
 90TH PERCENTILE            0.005      0.005                 0.002      0.002
 MAXIMUM                    0.005      0.005                 0.002      0.002
 DATE OF MAXIMUM       1993-12-15 1993-12-15            1993-12-15 1993-12-15
 STANDARD DEVIATION         0.000      0.000                 0.000      0.000




                         COLIFORM   FAEC COL         Cd         Cd         Cd
                            TOTAL                 TOTAL       DISS       DISS
                            36001      36012      48001      48101      48901
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          1          1         21
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21          0          0          0
 MEAN                     1.8E+04        91.      0.001      0.001      0.001
 MINIMUM                  2.3E+02         8.                            0.001
 DATE OF MINIMUM       1993-08-18 1993-04-21                       1992-04-22
 10TH PERCENTILE          3.3E+02        10.                            0.001
 MEDIAN                   3.3E+03        50.                            0.001
 90TH PERCENTILE          3.3E+04       218.                            0.001
 MAXIMUM                  1.6E+05       480.                            0.001
 DATE OF MAXIMUM       1992-07-22 1993-09-16                       1993-12-15
 STANDARD DEVIATION       3.8E+04       115.                            0.000




                               Cd         Ba         Hg         Pb         Pb
                            TOTAL      TOTAL       DISS      TOTAL       DISS
                            48911      80011      80111      82001      82101
                          mg/L Cd    ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES       21         21         21          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.001      0.500      0.500      0.005      0.005
 MINIMUM                    0.001      0.500      0.500                      
 DATE OF MINIMUM       1992-04-22 1992-04-22 1992-04-22                      
 10TH PERCENTILE            0.001      0.500      0.500                      
 MEDIAN                     0.001      0.500      0.500                      
 90TH PERCENTILE            0.001      0.500      0.500                      
 MAXIMUM                    0.001      0.500      0.500                      
 DATE OF MAXIMUM       1993-12-15 1993-12-15 1993-12-15                      
 STANDARD DEVIATION         0.000      0.000      0.000                      



                               Pb         Pb    PHENOLS
                             DISS      TOTAL           
                            82901      82911      95011
                          mg/L Pb    mg/L Pb       ug/L


 NO. OF L-FLAGGED VALUES       21         21         21
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0
 MEAN                       0.005      0.005        5.0
 MINIMUM                    0.005      0.005        5.0
 DATE OF MINIMUM       1992-04-22 1992-04-22 1992-04-22
 10TH PERCENTILE            0.005      0.005        5.0
 MEDIAN                     0.005      0.005        5.0
 90TH PERCENTILE            0.005      0.005        5.0
 MAXIMUM                    0.005      0.005        5.0
 DATE OF MAXIMUM       1993-12-15 1993-12-15 1993-12-15
 STANDARD DEVIATION         0.000      0.000        0.0





 STATION - LAKE BIWA - NORTH CENTER                 STATION NO. 080019
 COUNTRY - JAPAN                                    DEPTH(M)      41.0
 LOCATION - OCT. 2  LAT. 35/23/30  LONG. 136/08/07  ELEVATION(M)  85.6
 REGIONAL CENTRE - WPRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-04-06 TO 1993-12-06

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             TEMP      TRANS   CHLORO A     NO3NO2        NH3
                                                                             
                            02062      02076      06711      07105      07556
                            deg C          m       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20         20          7
 MEAN                        16.6        6.2     0.0049       0.12       0.01
 MINIMUM                      8.3        3.0     0.0015       0.01       0.01
 DATE OF MINIMUM       1993-02-03 1992-07-06 1992-04-06 1992-07-06 1992-08-03
 10TH PERCENTILE              8.3        3.6     0.0015       0.01       0.01
 MEDIAN                      15.7        6.2     0.0041       0.11       0.01
 90TH PERCENTILE             26.6        8.7     0.0067       0.20       0.02
 MAXIMUM                     27.5       10.0     0.0184       0.22       0.02
 DATE OF MAXIMUM       1992-09-07 1993-12-06 1992-07-06 1993-03-03 1993-06-07
 STANDARD DEVIATION           6.3        1.9     0.0037       0.07       0.00




                          PERCENT         O2        BOD         pH   SUSP SOL
                           DO SAT       DISS                          105 DEG
                            08001      08102      08201      10301      10401
                          PERCENT    mg/L O2    mg/L O2   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0         14          0          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20          6         20         14
 MEAN                        103.        9.8         1.        8.0         1.
 MINIMUM                      86.        8.0         1.        7.3         1.
 DATE OF MINIMUM       1993-01-11 1992-09-07 1992-04-06 1993-02-03 1992-04-06
 10TH PERCENTILE              88.        8.4         1.        7.4         1.
 MEDIAN                      100.        9.6         1.        7.9         1.
 90TH PERCENTILE             118.       10.9         1.        8.5         2.
 MAXIMUM                     130.       13.3         1.        9.4         2.
 DATE OF MAXIMUM       1993-05-10 1993-05-10 1993-12-06 1992-07-06 1992-07-06
 STANDARD DEVIATION           12.        1.2         0.        0.6         0.




                               Si          P         Cl         Cr         As
                         REACTIVE      TOTAL       DISS      TOTAL      TOTAL
                            14101      15405      17203      24002      33007
                         mg/LSiO2     mg/L P    mg/L Cl    mg/L Cr    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          0         20         20
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20          0          0
 MEAN                        1.21      0.007         9.      0.010      0.005
 MINIMUM                     0.50      0.004         8.      0.010      0.005
 DATE OF MINIMUM       1993-11-16 1992-04-06 1993-09-06 1992-04-06 1992-04-06
 10TH PERCENTILE             0.60      0.004         9.      0.010      0.005
 MEDIAN                      1.35      0.006         9.      0.010      0.005
 90TH PERCENTILE             1.50      0.009         9.      0.010      0.005
 MAXIMUM                     1.60      0.011         9.      0.010      0.005
 DATE OF MAXIMUM       1992-10-05 1992-06-01 1993-12-06 1993-12-06 1993-12-06
 STANDARD DEVIATION          0.34      0.002         0.      0.000      0.000




                         COLIFORM   FAEC COL         Cd         Ba         Pb
                            TOTAL                 TOTAL      TOTAL      TOTAL
                            36001      36012      48002      80011      82002
                         No/100ml   No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0         20         20         20
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          5          0          0          0
 MEAN                        143.         0.      0.001      0.500      0.020
 MINIMUM                       0.         0.      0.001      0.500      0.020
 DATE OF MINIMUM       1993-12-06 1993-08-02 1992-04-06 1992-04-06 1992-04-06
 10TH PERCENTILE               1.                 0.001      0.500      0.020
 MEDIAN                       17.         0.      0.001      0.500      0.020
 90TH PERCENTILE              80.                 0.001      0.500      0.020
 MAXIMUM                    1800.         0.      0.001      0.500      0.020
 DATE OF MAXIMUM       1992-08-03 1993-12-06 1993-12-06 1993-12-06 1993-12-06
 STANDARD DEVIATION          459.         0.      0.000      0.000      0.000





 STATION - LAKE BIWA - SOUTH CENTER                 STATION NO. 080020
 COUNTRY - JAPAN                                    DEPTH(M)       8.0
 LOCATION - OCT. 2  LAT. 35/02/28  LONG. 135/53/46  ELEVATION(M)  85.6
 REGIONAL CENTRE - WPRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-04-07 TO 1993-12-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             TEMP      TRANS   CHLORO A     NO3NO2        NH3
                                                                             
                            02062      02076      06711      07105      07556
                            deg C          m       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          1          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20         19         12
 MEAN                        17.4        1.4     0.0132       0.11       0.03
 MINIMUM                      5.3        0.6     0.0053       0.01       0.01
 DATE OF MINIMUM       1993-02-03 1993-02-03 1993-03-03 1992-10-06 1992-04-07
 10TH PERCENTILE              7.4        0.6     0.0058       0.02       0.01
 MEDIAN                      18.2        1.2     0.0124       0.11       0.02
 90TH PERCENTILE             24.5        1.9     0.0225       0.22       0.05
 MAXIMUM                     27.7        2.9     0.0246       0.24       0.06
 DATE OF MAXIMUM       1992-09-08 1993-08-03 1992-07-07 1992-04-07 1993-02-03
 STANDARD DEVIATION           6.5        0.6     0.0059       0.07       0.02




                          PERCENT         O2        BOD         pH   SUSP SOL
                           DO SAT       DISS                          105 DEG
                            08001      08102      08201      10301      10401
                          PERCENT    mg/L O2    mg/L O2   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          9          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         11         20         20
 MEAN                        106.       10.1         1.        8.1         9.
 MINIMUM                      89.        7.6         1.        7.4         2.
 DATE OF MINIMUM       1993-01-12 1993-08-03 1992-04-07 1993-01-12 1993-08-03
 10TH PERCENTILE              93.        8.0         1.        7.5         3.
 MEDIAN                      103.       10.0         1.        7.9         8.
 90TH PERCENTILE             121.       12.0         2.        8.8        13.
 MAXIMUM                     128.       12.3         3.        9.2        24.
 DATE OF MAXIMUM       1993-05-11 1993-02-03 1993-05-11 1992-07-07 1993-02-03
 STANDARD DEVIATION           11.        1.3         1.        0.5         5.




                               Si          P         Cl         Cr         As
                         REACTIVE      TOTAL       DISS      TOTAL      TOTAL
                            14101      15405      17203      24002      33007
                         mg/LSiO2     mg/L P    mg/L Cl    mg/L Cr    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          0         18         20
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20          2          0
 MEAN                        1.63      0.021        10.      0.010      0.005
 MINIMUM                     0.50      0.011         9.      0.010      0.005
 DATE OF MINIMUM       1992-10-06 1993-01-12 1992-05-12 1992-04-07 1992-04-07
 10TH PERCENTILE             0.90      0.014         9.      0.010      0.005
 MEDIAN                      1.75      0.020        10.      0.010      0.005
 90TH PERCENTILE             2.40      0.029        10.      0.010      0.005
 MAXIMUM                     2.60      0.035        10.      0.010      0.005
 DATE OF MAXIMUM       1992-08-03 1992-08-03 1993-06-08 1993-12-07 1993-12-07
 STANDARD DEVIATION          0.58      0.006         1.      0.000      0.000




                         COLIFORM   FAEC COL         Cd         Ba         Pb
                            TOTAL                 TOTAL      TOTAL      TOTAL
                            36001      36012      48002      80011      82002
                         No/100ml   No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0         20         20         20
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         13          0          0          0
 MEAN                         54.         4.      0.001      0.500      0.020
 MINIMUM                       5.         0.      0.001      0.500      0.020
 DATE OF MINIMUM       1992-06-02 1993-02-03 1992-04-07 1992-04-07 1992-04-07
 10TH PERCENTILE               5.         0.      0.001      0.500      0.020
 MEDIAN                       13.         0.      0.001      0.500      0.020
 90TH PERCENTILE             170.         4.      0.001      0.500      0.020
 MAXIMUM                     350.        40.      0.001      0.500      0.020
 DATE OF MAXIMUM       1993-11-16 1993-11-16 1993-12-07 1993-12-07 1993-12-07
 STANDARD DEVIATION           88.        11.      0.000      0.000      0.000





 STATION - YOSHINO RIVER AT TAKASE                  STATION NO. 080021
 COUNTRY - JAPAN                                    DEPTH(M)       5.9
 LOCATION - OCT. 2  LAT. 34/05/53  LONG. 134/25/34  ELEVATION(M)   4.6
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-10-06 TO 1993-12-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      TRANS     NO3NO2    AMMONIA
                             COND                                        DISS
                            02041      02061      02076      07316      07564
                            us/cm      deg C          m     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       28         29         29         15         15
 MEAN                         98.       14.5        2.4       2.99        0.1
 MINIMUM                      66.        6.0        0.6       1.78        0.1
 DATE OF MINIMUM       1993-07-06 1993-03-02 1993-08-16 1993-06-01 1992-10-06
 10TH PERCENTILE              76.        6.9        0.6       2.01        0.1
 MEDIAN                       98.       15.5        2.5       2.93        0.1
 90TH PERCENTILE             116.       20.5        3.9       3.88        0.1
 MAXIMUM                     125.       21.2        4.0       4.11        0.1
 DATE OF MAXIMUM       1993-05-17 1993-06-01 1993-01-19 1993-09-07 1993-12-07
 STANDARD DEVIATION           16.        4.9        1.1       0.65        0.0




                               O2        BOD        ALK         pH   SUSP SOL
                             DISS                 TOTAL               105 DEG
                            08101      08201      10102      10302      10401
                          mg/L O2    mg/L O2       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0         21          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29          8         29         29         29
 MEAN                         9.7         1.      28.49        7.5         6.
 MINIMUM                      8.5         1.      18.00        7.1         1.
 DATE OF MINIMUM       1993-09-07 1992-10-06 1993-07-06 1993-07-06 1993-12-07
 10TH PERCENTILE              8.7         1.      21.60        7.2         2.
 MEDIAN                       9.2         1.      28.90        7.5         3.
 90TH PERCENTILE             11.1         1.      33.80        7.7        17.
 MAXIMUM                     11.5         2.      34.40        7.7        20.
 DATE OF MAXIMUM       1993-03-02 1993-07-06 1992-11-16 1993-04-26 1993-07-06
 STANDARD DEVIATION           0.9         0.       4.60        0.2         6.




                               Na         Mg         Si          P    P TOTAL
                             DISS       DISS   REACTIVE      TOTAL       DISS
                            11112      12102      14101      15405      15417
                          mg/L Na    mg/L Mg   mg/LSiO2     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         27         27         29         28
 MEAN                          4.         1.       7.96      0.020      0.009
 MINIMUM                       2.         1.       5.73      0.008      0.001
 DATE OF MINIMUM       1993-07-06 1992-10-06 1993-09-07 1992-10-06 1993-02-15
 10TH PERCENTILE               2.         1.       6.44      0.008      0.003
 MEDIAN                        4.         1.       7.85      0.020      0.007
 90TH PERCENTILE               5.         2.       9.46      0.032      0.016
 MAXIMUM                       5.         2.      12.30      0.036      0.017
 DATE OF MAXIMUM       1992-12-01 1992-12-01 1992-10-06 1993-11-15 1993-06-01
 STANDARD DEVIATION            1.         0.       1.36      0.009      0.005




                         SULPHATE         Cl          K         Ca   COLIFORM
                                        DISS       DISS       DISS      TOTAL
                            16309      17204      19112      20103      36001
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         29         15         27         29
 MEAN                          9.         4.        1.0     10.832      5551.
 MINIMUM                       6.         2.        0.7      7.420       140.
 DATE OF MINIMUM       1993-07-06 1993-07-06 1993-07-06 1993-07-06 1993-02-15
 10TH PERCENTILE               6.         2.        0.8      8.519       203.
 MEDIAN                        9.         3.        1.0     10.800      1700.
 90TH PERCENTILE              12.         6.        1.2     13.000     11000.
 MAXIMUM                      12.         6.        1.3     13.100     49000.
 DATE OF MAXIMUM       1992-12-01 1993-05-17 1992-11-16 1993-02-15 1993-09-07
 STANDARD DEVIATION            2.         1.        0.1      1.671     12352.




                         FAEC COL       INST
                                      DISCHG
                            36012      97160
                         No/100ml       m3/S


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       28         29
 MEAN                        184.      144.9
 MINIMUM                       2.       19.9
 DATE OF MINIMUM       1993-04-26 1993-02-15
 10TH PERCENTILE               6.       24.7
 MEDIAN                       36.       49.1
 90TH PERCENTILE             470.      390.2
 MAXIMUM                    1100.      641.1
 DATE OF MAXIMUM       1993-08-16 1993-07-06
 STANDARD DEVIATION          294.      176.1





 STATION - SHIMANTO RIVER AT GUDO                   STATION NO. 080022
 COUNTRY - JAPAN                                    DEPTH(M)       8.0
 LOCATION - OCT. 2  LAT. 32/59/07  LONG. 132/55/42  ELEVATION(M)  10.0
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-07-30 TO 1993-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02062      07105      07556      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          9          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         18          9         18
 MEAN                         71.       18.9       0.16       0.01        9.8
 MINIMUM                      54.        7.8       0.06       0.01        8.4
 DATE OF MINIMUM       1993-07-20 1993-02-05 1992-09-10 1992-07-30 1993-08-18
 10TH PERCENTILE              55.       10.5       0.08       0.01        8.5
 MEDIAN                       70.       20.1       0.16       0.01        9.4
 90TH PERCENTILE              86.       24.7       0.21       0.01       11.8
 MAXIMUM                      95.       29.8       0.35       0.01       12.2
 DATE OF MAXIMUM       1992-07-30 1992-07-30 1993-03-09 1993-12-14 1993-12-14
 STANDARD DEVIATION           11.        5.8       0.07       0.00        1.2




                              BOD        COD        ALK         pH   SUSP SOL
                                                  TOTAL               105 DEG
                            08201      08301      10102      10301      10401
                          mg/L O2    mg/L O2       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        8          0          0          0          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          3         18         18         11
 MEAN                          1.         1.      26.54        7.4         1.
 MINIMUM                       0.                 19.80        6.8         1.
 DATE OF MINIMUM       1993-08-18            1993-05-21 1993-01-11 1992-07-30
 10TH PERCENTILE               0.                 20.52        7.0         1.
 MEDIAN                        1.                 27.25        7.4         1.
 90TH PERCENTILE               1.                 31.10        7.7         2.
 MAXIMUM                       1.                 33.00        8.2         6.
 DATE OF MAXIMUM       1993-07-20            1993-01-11 1992-07-30 1993-04-30
 STANDARD DEVIATION            0.                  3.87        0.4         1.




                               Na         Mg         Si          P    P TOTAL
                             DISS       DISS   REACTIVE      TOTAL       DISS
                            11105      12102      14101      15405      15417
                          mg/L Na    mg/L Mg   mg/LSiO2     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         18         18         17
 MEAN                          4.         1.      10.87      0.011      0.005
 MINIMUM                       3.         1.       9.20      0.004      0.002
 DATE OF MINIMUM       1992-08-28 1992-07-30 1992-11-11 1993-02-05 1993-02-05
 10TH PERCENTILE               3.         1.       9.28      0.005      0.003
 MEDIAN                        4.         1.      10.45      0.010      0.004
 90TH PERCENTILE               5.         1.      12.01      0.014      0.008
 MAXIMUM                       5.         2.      16.80      0.021      0.012
 DATE OF MAXIMUM       1993-04-30 1992-11-11 1993-04-30 1993-04-30 1993-04-30
 STANDARD DEVIATION            1.         0.       1.70      0.004      0.003



                         SULPHATE         Cl          K         Ca       INST
                                        DISS       DISS       DISS     DISCHG
                            16309      17207      19105      20103      97160
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca       m3/S


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         18         18         18         18
 MEAN                          6.         4.        0.8      7.022      140.3
 MINIMUM                       4.         3.        0.5      5.000       11.9
 DATE OF MINIMUM       1992-08-28 1992-08-28 1992-09-10 1992-08-28 1993-02-05
 10TH PERCENTILE               5.         3.        0.5      5.560       12.4
 MEDIAN                        6.         4.        0.7      7.000       84.2
 90TH PERCENTILE               7.         5.        0.9      8.210      309.5
 MAXIMUM                       8.         5.        1.7      9.400      549.2
 DATE OF MAXIMUM       1993-11-16 1992-12-10 1992-07-30 1992-11-11 1993-04-30
 STANDARD DEVIATION            1.         1.        0.3      1.081      146.6





 STATION - CHIKUGO RIVER AT SENOSHITA               STATION NO. 080023
 COUNTRY - JAPAN                                    DEPTH(M)       5.5
 LOCATION - OCT. 2  LAT. 33/18/56  LONG. 130/29/45  ELEVATION(M)   2.0
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-06-10 TO 1993-12-08

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      TRANS   CHLORO A     NO3NO2
                             COND                                            
                            02041      02061      02076      06711      07105
                            us/cm      deg C          m       mg/L     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0         19          0          0
 NO. OF UNFLAGGED VALUES       19         19          0         19         19
 MEAN                        198.       18.3        0.3     0.0209       0.76
 MINIMUM                     114.        7.9        0.3     0.0027       0.33
 DATE OF MINIMUM       1993-07-28 1993-01-19 1992-06-10 1993-10-12 1992-06-10
 10TH PERCENTILE             129.        8.4        0.3     0.0040       0.33
 MEDIAN                      201.       19.5        0.3     0.0105       0.79
 90TH PERCENTILE             260.       25.4        0.3     0.0501       1.00
 MAXIMUM                     268.       29.4        0.3     0.0795       1.10
 DATE OF MAXIMUM       1993-12-08 1992-07-28 1993-12-08 1992-07-28 1993-08-31
 STANDARD DEVIATION           49.        6.2        0.0     0.0225       0.23




                              NH3         O2        BOD         pH   SUSP SOL
                                        DISS                          105 DEG
                            07556      08102      08201      10301      10401
                           mg/L N    mg/L O2    mg/L O2   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         19         16         19         19
 MEAN                        0.12        8.5         2.        7.5         8.
 MINIMUM                     0.01        1.2         0.        6.8         2.
 DATE OF MINIMUM       1993-09-29 1992-08-11 1993-02-16 1993-07-28 1993-10-12
 10TH PERCENTILE             0.02        3.5         0.        6.9         3.
 MEDIAN                      0.10        8.8         1.        7.4         7.
 90TH PERCENTILE             0.22       11.3         4.        7.9        12.
 MAXIMUM                     0.37       12.4         5.        8.8        13.
 DATE OF MAXIMUM       1992-12-08 1993-02-16 1993-08-31 1993-04-20 1993-03-17
 STANDARD DEVIATION          0.09        2.7         2.        0.5         3.




                               Na         Mg          P   SULPHATE         Cl
                             DISS       DISS      TOTAL                  DISS
                            11105      12102      15405      16302      17203
                          mg/L Na    mg/L Mg     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         19         19         19         19
 MEAN                          9.         3.      0.082        12.        12.
 MINIMUM                       3.         2.      0.039         6.         8.
 DATE OF MINIMUM       1993-07-28 1992-06-10 1993-10-12 1993-07-28 1993-10-12
 10TH PERCENTILE               6.         2.      0.042        10.         9.
 MEDIAN                       10.         2.      0.076        12.        13.
 90TH PERCENTILE              12.         3.      0.098        14.        16.
 MAXIMUM                      13.        15.      0.253        16.        16.
 DATE OF MAXIMUM       1993-06-02 1992-11-18 1993-07-28 1992-09-24 1993-05-19
 STANDARD DEVIATION            3.         3.      0.046         2.         2.




                                K         Ca   COLIFORM   FAEC COL       INST
                             DISS       DISS      TOTAL                DISCHG
                            19105      20103      36001      36012      97160
                           mg/L K    mg/L Ca   No/100ml   No/100ml       m3/S


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         19         19         19         19
 MEAN                         3.0      6.195    1.3E+04       750.      518.0
 MINIMUM                      1.8      1.800    3.3E+01        29.       41.0
 DATE OF MINIMUM       1993-10-12 1993-08-31 1993-04-20 1993-04-20 1993-01-19
 10TH PERCENTILE              2.1      3.524    4.9E+02        35.       42.8
 MEDIAN                       3.1      6.580    4.9E+03       390.       62.4
 90TH PERCENTILE              3.6      8.099    1.5E+04      2782.      549.8
 MAXIMUM                      3.9      8.590    1.4E+05      2830.     7401.0
 DATE OF MAXIMUM       1993-03-17 1993-01-19 1993-07-28 1993-07-28 1993-06-02
 STANDARD DEVIATION           0.6      1.766    3.1E+04       955.     1679.6





 STATION - KUMA RIVER AT YOKOISHI                   STATION NO. 080024
 COUNTRY - JAPAN                                    DEPTH(M)       0.4
 LOCATION - OCT. 2  LAT. 32/27/28  LONG. 130/39/24  ELEVATION(M)   9.1
 REGIONAL CENTRE - WPRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-06-17 TO 1993-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP   CHLORO A     NO3NO2     ORG. N
                             COND                                        DISS
                            02041      02061      06711      07105      07403
                            us/cm      deg C       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0         33
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41         41         41         41          8
 MEAN                         96.       17.9     0.0044       0.55        0.1
 MINIMUM                      56.       10.1     0.0001       0.39        0.1
 DATE OF MINIMUM       1993-08-19 1993-02-24 1993-08-19 1993-04-20 1992-06-17
 10TH PERCENTILE              82.       10.4     0.0003       0.43        0.1
 MEDIAN                       95.       18.3     0.0021       0.55        0.1
 90TH PERCENTILE             113.       23.3     0.0050       0.68        0.1
 MAXIMUM                     122.       25.0     0.0450       0.79        0.3
 DATE OF MAXIMUM       1992-08-04 1992-08-04 1993-09-28 1992-06-17 1993-01-06
 STANDARD DEVIATION           15.        4.4     0.0094       0.09        0.0




                              NH3         O2        BOD        ALK         pH
                                        DISS                 TOTAL           
                            07556      08101      08201      10102      10301
                           mg/L N    mg/L O2    mg/L O2       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES       18          0         31          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       23         41         10         41         41
 MEAN                        0.04        9.7         1.      30.96        7.6
 MINIMUM                     0.01        8.2         1.      18.70        7.1
 DATE OF MINIMUM       1992-07-21 1992-06-17 1992-06-17 1993-06-25 1992-12-01
 10TH PERCENTILE             0.01        8.5         1.      21.48        7.1
 MEDIAN                      0.01        9.6         1.      31.78        7.4
 90TH PERCENTILE             0.13       10.9         1.      38.50        8.2
 MAXIMUM                     0.24       11.5         2.      40.00        8.3
 DATE OF MAXIMUM       1993-03-10 1993-12-14 1992-08-04 1992-11-18 1992-09-22
 STANDARD DEVIATION          0.06        1.0         0.       5.57        0.4




                         SUSP SOL         Na         Mg         Al         Si
                          105 DEG       DISS       DISS       DISS   REACTIVE
                            10401      11112      12109      13103      14101
                             mg/L    mg/L Na    mg/L Mg    mg/L Al   mg/LSiO2


 NO. OF L-FLAGGED VALUES        6          0         10         35          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         41         31          6         41
 MEAN                          6.         5.         1.      0.036      15.19
 MINIMUM                       1.         3.         1.      0.030      11.30
 DATE OF MINIMUM       1992-07-21 1993-06-25 1992-06-17 1992-06-17 1993-08-19
 10TH PERCENTILE               1.         3.         1.      0.030      12.14
 MEDIAN                        3.         5.         1.      0.030      14.98
 90TH PERCENTILE              14.         6.         2.      0.050      18.10
 MAXIMUM                      39.         6.         2.      0.090      20.90
 DATE OF MAXIMUM       1993-08-19 1992-09-22 1992-09-22 1992-07-21 1993-11-18
 STANDARD DEVIATION            9.         1.         0.      0.016       2.44




                                P    P TOTAL   SULPHATE         Cl          K
                            TOTAL       DISS                  DISS       DISS
                            15405      15417      16309      17209      19112
                           mg/L P     mg/L P   mg/L SO4    mg/L Cl     mg/L K


 NO. OF L-FLAGGED VALUES        0          2          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41         39         41         41         41
 MEAN                       0.030      0.072         6.         3.        1.0
 MINIMUM                    0.012      0.005         3.         2.        0.6
 DATE OF MINIMUM       1992-12-01 1992-12-01 1993-08-19 1993-05-19 1993-03-10
 10TH PERCENTILE            0.014      0.009         4.         2.        0.6
 MEDIAN                     0.030      0.024         6.         3.        0.9
 90TH PERCENTILE            0.032      0.032         7.         5.        1.3
 MAXIMUM                    0.078      1.050         7.         7.        1.5
 DATE OF MAXIMUM       1992-06-17 1993-01-06 1993-01-06 1993-12-14 1993-11-18
 STANDARD DEVIATION         0.013      0.224         1.         1.        0.3




                               Ca         Mn         Fe         Fe         Cu
                             DISS       DISS       DISS       DISS       DISS
                            20109      25104      26104      26105      29106
                             mg/L    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        0         39         37          0         41
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41          2          3          1          0
 MEAN                      10.580       0.01       0.05       0.05      0.010
 MINIMUM                    6.400       0.01       0.05                 0.010
 DATE OF MINIMUM       1993-06-25 1992-06-17 1992-06-17            1992-06-17
 10TH PERCENTILE            7.100       0.01       0.05                 0.010
 MEDIAN                    11.200       0.01       0.05                 0.010
 90TH PERCENTILE           12.400       0.01       0.05                 0.010
 MAXIMUM                   13.100       0.01       0.08                 0.010
 DATE OF MAXIMUM       1992-11-18 1993-12-14 1993-08-19            1993-12-14
 STANDARD DEVIATION         1.865       0.00       0.01                 0.000




                               Zn         Zn   COLIFORM   FAEC COL         Cd
                             DISS       DISS      TOTAL                  DISS
                            30104      30105      36001      36011      48102
                          mg/L Zn    mg/L Zn   No/100ml   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES       24          2          0          4         40
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15          0         41         37          1
 MEAN                       0.007      0.005      1219.        58.      0.001
 MINIMUM                    0.005                   22.         2.      0.001
 DATE OF MINIMUM       1992-06-17            1993-04-20 1993-03-10 1992-06-17
 10TH PERCENTILE            0.005                   33.         2.      0.001
 MEDIAN                     0.005                  490.        13.      0.001
 90TH PERCENTILE            0.008                 1700.       162.      0.001
 MAXIMUM                    0.036                 9200.       700.      0.005
 DATE OF MAXIMUM       1993-11-18            1993-06-25 1993-05-19 1993-03-10
 STANDARD DEVIATION         0.007                 2342.       122.      0.001




                               Pb       INST
                             DISS     DISCHG
                            82103      97160
                          mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES       37          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        4         39
 MEAN                       0.019      118.4
 MINIMUM                    0.010        8.2
 DATE OF MINIMUM       1993-10-20 1992-11-18
 10TH PERCENTILE            0.010        8.2
 MEDIAN                     0.020       51.9
 90TH PERCENTILE            0.020      346.3
 MAXIMUM                    0.020      544.3
 DATE OF MAXIMUM       1993-09-28 1993-06-25
 STANDARD DEVIATION         0.004      160.1




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Last updated: 2001-07-30