Home | Français

STATISTICS for THE UNITED STATES OF AMERICA

STATISTICS FOR THE UNITED STATES OF AMERICA


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 699

 STATION - MISSISSIPPI RIVER                        STATION NO. 028001
 COUNTRY - UNITED STATES                            DEPTH(M)      14.0
 LOCATION - OCT. 1  LAT. 32/18/45  LONG. 090/54/25  ELEVATION(M)  21.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-03 TO 1981-10-29

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2         O2
                             COND                                        DISS
                            02041      06001      07004      07105      08102
                            us/cm     mg/L C     mg/L N     mg/L N    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       33         20         32         32         33
 MEAN                        373.         6.        0.7       1.40        9.0
 MINIMUM                     256.         0.        0.2       0.91        6.0
 DATE OF MINIMUM       1979-03-06 1981-05-28 1980-08-26 1980-12-01 1979-08-07
 10TH PERCENTILE             293.         2.        0.4       0.94        6.4
 MEDIAN                      370.         6.        0.7       1.40        8.1
 90TH PERCENTILE             446.         8.        1.1       1.90       12.4
 MAXIMUM                     502.        12.        1.5       2.70       13.5
 DATE OF MAXIMUM       1981-10-29 1979-05-01 1979-01-03 1980-06-27 1981-01-13
 STANDARD DEVIATION           63.         3.        0.3       0.43        2.3




                                F        ALK         Mg         Cl     ALDRIN
                             DISS      TOTAL       DISS       DISS           
                            09104      10121      12102      17203      18130
                           mg/L F      MEQ/L    mg/L Mg    mg/L Cl       ug/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       32         19         32         32          4
 MEAN                         0.2      92.11        12.        18.      0.000
 MINIMUM                      0.1      62.00         7.        11.      0.000
 DATE OF MINIMUM       1979-01-03 1979-02-07 1979-02-07 1979-10-02 1979-03-06
 10TH PERCENTILE              0.1      62.00         8.        13.           
 MEDIAN                       0.2      94.00        11.        18.      0.000
 90TH PERCENTILE              0.3     111.00        15.        23.           
 MAXIMUM                      0.3     120.00        18.        28.      0.000
 DATE OF MAXIMUM       1980-10-08 1980-07-29 1981-10-29 1980-06-27 1979-06-05
 STANDARD DEVIATION           0.1      16.83         3.         4.      0.000




                           ENDRIN   DIELDRIN         Ca         Cr         Cr
                                                   DISS      TOTAL       DISS
                            18140      18150      20103      24002      24052
                             ug/L       ug/L    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          2          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          4         32         10          8
 MEAN                       0.000      0.000     38.406      0.019      0.012
 MINIMUM                    0.000      0.000     25.000      0.010      0.000
 DATE OF MINIMUM       1979-03-06 1979-03-06 1979-03-06 1981-03-25 1979-01-03
 10TH PERCENTILE                                 29.400      0.010      0.002
 MEDIAN                     0.000      0.000     39.000      0.020      0.010
 90TH PERCENTILE                                 44.800      0.020      0.020
 MAXIMUM                    0.000      0.000     51.000      0.030      0.020
 DATE OF MAXIMUM       1979-06-05 1979-06-05 1981-01-13 1980-04-04 1979-10-02
 STANDARD DEVIATION         0.000      0.000      6.262      0.005      0.006





                               Mn         Mn         Fe         Fe         Ni
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      28001
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         12         12         11          9
 MEAN                        0.20       0.01       4.62       0.06      0.009
 MINIMUM                     0.12       0.00       1.70       0.01      0.000
 DATE OF MINIMUM       1981-01-13 1979-07-03 1981-01-13 1980-10-08 1981-01-13
 10TH PERCENTILE             0.13       0.00       1.76       0.01           
 MEDIAN                      0.20       0.01       3.90       0.02      0.008
 90TH PERCENTILE             0.26       0.02       6.94       0.13           
 MAXIMUM                     0.31       0.03      11.00       0.25      0.019
 DATE OF MAXIMUM       1980-06-27 1981-01-13 1980-06-27 1979-01-03 1980-06-27
 STANDARD DEVIATION          0.05       0.01       2.74       0.07      0.005




                               Ni         Cu         Cu         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            28102      29006      29105      33003      33104
                          mg/L Ni    mg/L Cu    mg/L Cu    mg/L As    mg/L As


 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         12         12         12         12
 MEAN                       0.003      0.012      0.005      0.003      0.002
 MINIMUM                    0.000      0.003      0.000      0.000      0.001
 DATE OF MINIMUM       1981-01-13 1981-01-13 1981-01-13 1981-03-25 1979-01-03
 10TH PERCENTILE                       0.004      0.000      0.000      0.001
 MEDIAN                     0.002      0.010      0.005      0.003      0.001
 90TH PERCENTILE                       0.017      0.007      0.004      0.002
 MAXIMUM                    0.008      0.030      0.008      0.004      0.003
 DATE OF MAXIMUM       1980-04-04 1980-01-08 1980-04-04 1981-01-13 1980-10-08
 STANDARD DEVIATION         0.003      0.007      0.002      0.001      0.001




                         FAEC COL       FAEC         Cd         Cd         Ba
                                       STREP      TOTAL       DISS      TOTAL
                            36012      36102      48001      48101      56001
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    mg/L Ba


 NO. OF L-FLAGGED VALUES        0          0          0          2          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       27         30         11         10         10
 MEAN                        457.       491.      0.001      0.003        0.1
 MINIMUM                      86.        18.      0.000      0.000        0.1
 DATE OF MINIMUM       1980-04-28 1980-06-03 1979-01-03 1981-03-25 1979-01-03
 10TH PERCENTILE             106.        37.      0.000      0.000        0.1
 MEDIAN                      299.       214.      0.000      0.002        0.1
 90TH PERCENTILE             831.      1400.      0.004      0.004        0.1
 MAXIMUM                    2600.      3300.      0.005      0.005        0.2
 DATE OF MAXIMUM       1981-05-28 1979-03-06 1980-04-04 1980-04-04 1979-04-03
 STANDARD DEVIATION          520.       747.      0.002      0.001        0.0




                               Ba         Ba         Hg         Pb         Pb
                             DISS      TOTAL       DISS      TOTAL       DISS
                            56101      80016      80111      82001      82101
                          mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        2          6          9          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          6          3         12         11
 MEAN                         0.1      0.275      0.242      0.015      0.004
 MINIMUM                      0.0      0.100      0.100      0.003      0.000
 DATE OF MINIMUM       1979-10-02 1980-01-08 1980-01-08 1981-01-13 1980-01-08
 10TH PERCENTILE              0.0      0.100      0.100      0.003      0.000
 MEDIAN                       0.1      0.200      0.100      0.012      0.002
 90TH PERCENTILE              0.1      0.500      0.500      0.022      0.008
 MAXIMUM                      0.1      0.500      0.500      0.060      0.013
 DATE OF MAXIMUM       1979-07-03 1979-10-02 1979-10-02 1979-01-03 1979-10-02
 STANDARD DEVIATION           0.0      0.176      0.193      0.015      0.004




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       33
 MEAN                     19085.1
 MINIMUM                   4984.3
 DATE OF MINIMUM       1981-01-13
 10TH PERCENTILE           7383.0
 MEDIAN                   17586.7
 90TH PERCENTILE          33530.9
 MAXIMUM                  47011.2
 DATE OF MAXIMUM       1979-05-01
 STANDARD DEVIATION       10443.5





 STATION - COLUMBIA RIVER                           STATION NO. 028002
 COUNTRY - UNITED STATES                            DEPTH(M)      18.0
 LOCATION - OCT. 1  LAT. 45/36/45  LONG. 122/01/35  ELEVATION(M)   3.7
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-23 TO 1981-10-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2         O2
                             COND                                        DISS
                            02041      06001      07004      07105      08102
                            us/cm     mg/L C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         21         30         30         32
 MEAN                        159.         3.        0.6       0.20       11.0
 MINIMUM                     119.         1.        0.2       0.00        8.5
 DATE OF MINIMUM       1980-06-09 1979-08-24 1979-04-09 1980-07-18 1979-07-19
 10TH PERCENTILE             128.         1.        0.2       0.01        8.6
 MEDIAN                      161.         2.        0.5       0.19       10.8
 90TH PERCENTILE             184.         5.        0.8       0.38       13.1
 MAXIMUM                     195.         8.        2.3       0.44       14.5
 DATE OF MAXIMUM       1980-12-09 1979-11-19 1979-09-20 1981-03-06 1979-02-23
 STANDARD DEVIATION           22.         2.        0.4       0.14        1.7




                                F        ALK         Mg         Cl         Ca
                             DISS      TOTAL       DISS       DISS       DISS
                            09104      10121      12102      17203      20103
                           mg/L F      MEQ/L    mg/L Mg    mg/L Cl    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         19         32         32         32
 MEAN                         0.2      58.68         4.         3.     18.281
 MINIMUM                      0.1      39.00         3.         1.     13.000
 DATE OF MINIMUM       1980-06-09 1979-06-05 1979-06-05 1979-07-19 1980-06-09
 10TH PERCENTILE              0.1      41.70         3.         1.     14.200
 MEDIAN                       0.2      61.00         4.         3.     18.500
 90TH PERCENTILE              0.2      69.00         6.         4.     20.800
 MAXIMUM                      0.3      70.00         6.        11.     23.000
 DATE OF MAXIMUM       1980-07-18 1979-02-23 1980-02-08 1981-07-23 1979-04-09
 STANDARD DEVIATION           0.0       9.49         1.         2.      2.413




                               Cr         Cr         Mn         Mn         Fe
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            24002      24052      25004      25104      26004
                          mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        2          4          0          5          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          7         11          6         11
 MEAN                       0.008      0.005       0.02       0.00       0.53
 MINIMUM                    0.000      0.000       0.01       0.00       0.21
 DATE OF MINIMUM       1979-07-19 1979-04-09 1980-07-18 1979-07-19 1981-10-15
 10TH PERCENTILE            0.000      0.000       0.01       0.00       0.21
 MEDIAN                     0.010      0.010       0.02       0.00       0.39
 90TH PERCENTILE            0.010      0.010       0.03       0.00       0.65
 MAXIMUM                    0.020      0.010       0.05       0.01       2.20
 DATE OF MAXIMUM       1979-04-09 1981-10-15 1980-01-21 1979-04-09 1980-01-21
 STANDARD DEVIATION         0.006      0.005       0.01       0.00       0.57





                               Fe         Ni         Ni         Cu         Cu
                             DISS      TOTAL       DISS      TOTAL       DISS
                            26104      28001      28102      29006      29105
                          mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu


 NO. OF L-FLAGGED VALUES        4          1          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          8          7         11         11
 MEAN                        0.02      0.004      0.002      0.013      0.003
 MINIMUM                     0.01      0.001      0.001      0.003      0.000
 DATE OF MINIMUM       1979-07-19 1981-01-20 1979-10-24 1981-04-07 1980-01-21
 10TH PERCENTILE             0.01                            0.003      0.000
 MEDIAN                      0.02      0.004      0.001      0.011      0.003
 90TH PERCENTILE             0.04                            0.017      0.007
 MAXIMUM                     0.06      0.009      0.003      0.040      0.007
 DATE OF MAXIMUM       1979-04-09 1981-10-15 1981-04-07 1979-07-19 1979-07-19
 STANDARD DEVIATION          0.02      0.002      0.001      0.010      0.002




                               As         As   FAEC COL       FAEC         Cd
                            TOTAL       DISS                 STREP      TOTAL
                            33003      33104      36012      36102      48001
                          mg/L As    mg/L As   No/100ml   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          4          1          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         11         27         30          7
 MEAN                       0.002      0.002         5.        22.      0.002
 MINIMUM                    0.001      0.001         1.         0.      0.000
 DATE OF MINIMUM       1979-04-09 1979-04-09 1979-06-05 1980-07-18 1980-07-18
 10TH PERCENTILE            0.001      0.001         1.         1.      0.000
 MEDIAN                     0.002      0.002         3.         5.      0.001
 90TH PERCENTILE            0.003      0.003        10.        49.      0.005
 MAXIMUM                    0.003      0.003        33.       260.      0.005
 DATE OF MAXIMUM       1981-01-20 1981-10-15 1980-12-09 1979-02-23 1979-07-19
 STANDARD DEVIATION         0.001      0.001         7.        51.      0.002




                               Cd         Ba         Ba         Ba         Hg
                             DISS      TOTAL       DISS      TOTAL       DISS
                            48101      56001      56101      80016      80111
                          mg/L Cd    mg/L Ba    mg/L Ba    ug/L Hg    ug/L Hg


 NO. OF L-FLAGGED VALUES        8          6          1          3          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3          6         10          6          3
 MEAN                       0.002        0.1        0.0      0.111      0.089
 MINIMUM                    0.001        0.0        0.0      0.100      0.000
 DATE OF MINIMUM       1980-01-21 1979-12-05 1979-07-19 1979-04-09 1980-07-18
 10TH PERCENTILE            0.001        0.0        0.0                      
 MEDIAN                     0.001        0.1        0.0      0.100      0.100
 90TH PERCENTILE            0.002        0.2        0.1                      
 MAXIMUM                    0.005        0.3        0.1      0.200      0.200
 DATE OF MAXIMUM       1979-10-24 1979-10-24 1981-07-23 1980-04-24 1980-04-24
 STANDARD DEVIATION         0.001        0.1        0.0      0.033      0.060




                               Pb         Pb
                            TOTAL       DISS
                            82001      82101
                          mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          3
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       11          8
 MEAN                       0.010      0.001
 MINIMUM                    0.002      0.000
 DATE OF MINIMUM       1981-07-23 1979-04-09
 10TH PERCENTILE            0.002      0.000
 MEDIAN                     0.006      0.001
 90TH PERCENTILE            0.026      0.002
 MAXIMUM                    0.029      0.007
 DATE OF MAXIMUM       1979-04-09 1981-07-23
 STANDARD DEVIATION         0.009      0.002





 STATION - YUKON RIVER                              STATION NO. 028003
 COUNTRY - UNITED STATES                            DEPTH(M)      11.0
 LOCATION - OCT. 1  LAT. 61/56/04  LONG. 162/52/50  ELEVATION(M)   9.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-27 TO 1981-12-20

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2         O2
                             COND                                        DISS
                            02041      06001      07004      07105      08102
                            us/cm     mg/L C     mg/L N     mg/L N    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       75          4         15         15         43
 MEAN                        212.         8.        0.7       0.14        8.7
 MINIMUM                     142.         6.        0.2       0.04        2.2
 DATE OF MINIMUM       1981-06-02 1981-06-30 1979-02-27 1980-10-01 1980-03-25
 10TH PERCENTILE             180.                   0.3       0.05        2.7
 MEDIAN                      210.         7.        0.8       0.11        9.2
 90TH PERCENTILE             268.                   1.1       0.23       12.0
 MAXIMUM                     315.        14.        1.2       0.23       13.2
 DATE OF MAXIMUM       1980-03-25 1980-12-20 1981-09-02 1980-03-25 1981-10-07
 STANDARD DEVIATION           37.         4.        0.3       0.07        3.3




                                F        ALK         Mg         Cl     ALDRIN
                             DISS      TOTAL       DISS       DISS           
                            09104      10121      12102      17203      18130
                           mg/L F      MEQ/L    mg/L Mg    mg/L Cl       ug/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       15         51         15         15          5
 MEAN                         0.1      86.33         7.         1.      0.000
 MINIMUM                      0.1      56.00         4.         0.      0.000
 DATE OF MINIMUM       1979-02-27 1981-06-02 1981-06-02 1979-07-12 1979-02-27
 10TH PERCENTILE              0.1      72.00         4.         0.           
 MEDIAN                       0.1      81.00         7.         1.      0.000
 90TH PERCENTILE              0.2     130.00        10.         1.           
 MAXIMUM                      0.2     144.00        10.         1.      0.000
 DATE OF MAXIMUM       1980-08-12 1980-03-25 1981-12-20 1981-04-08 1980-10-01
 STANDARD DEVIATION           0.0      22.84         2.         1.      0.000




                           ENDRIN   DIELDRIN         Ca         Cr         Cr
                                                   DISS      TOTAL       DISS
                            18140      18150      20103      24002      24052
                             ug/L       ug/L    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          5         15         10         10
 MEAN                       0.000      0.000     32.800      0.017      0.006
 MINIMUM                    0.000      0.000     22.000      0.010      0.000
 DATE OF MINIMUM       1979-02-27 1979-02-27 1981-06-02 1979-10-14 1979-02-27
 10TH PERCENTILE                                 23.000      0.010      0.000
 MEDIAN                     0.000      0.000     29.000      0.010      0.000
 90TH PERCENTILE                                 46.000      0.030      0.019
 MAXIMUM                    0.000      0.000     47.000      0.030      0.020
 DATE OF MAXIMUM       1980-10-01 1980-10-01 1979-02-27 1980-08-12 1980-07-07
 STANDARD DEVIATION         0.000      0.000      8.629      0.009      0.008




                               Mn         Mn         Fe         Fe         Ni
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      28001
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        0          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         10         50         11          9
 MEAN                        0.17       0.04       4.98       0.15      0.008
 MINIMUM                     0.09       0.00       0.18       0.03      0.000
 DATE OF MINIMUM       1979-10-14 1979-07-12 1979-10-14 1979-02-27 1980-03-25
 10TH PERCENTILE             0.09       0.00       1.30       0.03           
 MEDIAN                      0.12       0.01       3.50       0.09      0.005
 90TH PERCENTILE             0.33       0.11       8.80       0.32           
 MAXIMUM                     0.38       0.14      16.00       0.34      0.022
 DATE OF MAXIMUM       1980-08-12 1981-04-08 1980-08-12 1979-10-14 1980-08-12
 STANDARD DEVIATION          0.10       0.05       3.51       0.12      0.008




                               Ni         Cu         Cu         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            28102      29006      29105      33003      33104
                          mg/L Ni    mg/L Cu    mg/L Cu    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         11         10         11         11
 MEAN                       0.002      0.014      0.003      0.003      0.001
 MINIMUM                    0.000      0.001      0.000      0.000      0.000
 DATE OF MINIMUM       1980-10-01 1980-03-25 1981-04-08 1980-10-01 1981-04-08
 10TH PERCENTILE                       0.001      0.000      0.000      0.000
 MEDIAN                     0.003      0.012      0.003      0.003      0.001
 90TH PERCENTILE                       0.031      0.005      0.007      0.002
 MAXIMUM                    0.004      0.043      0.006      0.007      0.002
 DATE OF MAXIMUM       1981-10-07 1980-08-12 1981-08-04 1981-08-04 1980-08-12
 STANDARD DEVIATION         0.001      0.013      0.002      0.002      0.001




                         FAEC COL       FAEC         Cd         Cd         Ba
                                       STREP      TOTAL       DISS      TOTAL
                            36012      36102      48001      48101      56001
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    mg/L Ba


 NO. OF L-FLAGGED VALUES        5          7          2          5          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          4          9          6          9
 MEAN                          2.         2.      0.001      0.001        0.1
 MINIMUM                       1.         1.      0.000      0.000        0.1
 DATE OF MINIMUM       1979-02-27 1979-02-27 1980-03-25 1979-10-14 1979-02-27
 10TH PERCENTILE               1.         1.      0.000      0.000        0.1
 MEDIAN                        1.         1.      0.001      0.001        0.1
 90TH PERCENTILE               5.         3.      0.002      0.002        0.2
 MAXIMUM                       8.         7.      0.009      0.002        0.3
 DATE OF MAXIMUM       1980-08-12 1981-10-07 1981-08-04 1979-07-12 1979-10-14
 STANDARD DEVIATION            2.         2.      0.003      0.001        0.1





                               Ba         Ba         Hg         Pb         Pb
                             DISS      TOTAL       DISS      TOTAL       DISS
                            56101      80016      80111      82001      82101
                          mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        1          1          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         10          9          9         11
 MEAN                         0.1      0.100      0.018      0.015      0.002
 MINIMUM                      0.0      0.000      0.000      0.000      0.000
 DATE OF MINIMUM       1979-07-12 1980-03-25 1979-10-14 1980-03-25 1979-02-27
 10TH PERCENTILE              0.0      0.000      0.000                 0.000
 MEDIAN                       0.1      0.100      0.000      0.005      0.001
 90TH PERCENTILE              0.2      0.200      0.090                 0.004
 MAXIMUM                      0.4      0.300      0.100      0.059      0.004
 DATE OF MAXIMUM       1979-10-14 1981-08-04 1979-07-12 1979-10-14 1981-04-08
 STANDARD DEVIATION           0.1      0.100      0.040      0.021      0.002




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       15
 MEAN                      7785.2
 MINIMUM                   1390.5
 DATE OF MINIMUM       1981-04-08
 10TH PERCENTILE           1465.6
 MEDIAN                    9260.6
 90TH PERCENTILE          12942.2
 MAXIMUM                  13933.4
 DATE OF MAXIMUM       1980-07-07
 STANDARD DEVIATION        4780.5





 STATION - MISSOURI RIVER                           STATION NO. 028004
 COUNTRY - UNITED STATES                            DEPTH(M)       4.6
 LOCATION - OCT. 1  LAT. 38/42/36  LONG. 091/26/21  ELEVATION(M) 150.3
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-19 TO 1981-11-17

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2         O2
                             COND                                        DISS
                            02041      06001      07004      07105      08102
                            us/cm     mg/L C     mg/L N     mg/L N    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       34         24         33         34         34
 MEAN                        640.        12.        1.3       0.92        8.7
 MINIMUM                     280.         4.        0.5       0.00        3.0
 DATE OF MINIMUM       1981-07-30 1979-01-19 1980-10-23 1981-03-25 1981-07-30
 10TH PERCENTILE             390.         5.        0.6       0.29        5.3
 MEDIAN                      655.        12.        1.2       0.82        8.2
 90TH PERCENTILE             779.        20.        2.3       1.60       12.4
 MAXIMUM                     820.        27.        2.7       1.90       15.0
 DATE OF MAXIMUM       1981-01-22 1981-07-30 1980-06-17 1979-12-18 1981-09-24
 STANDARD DEVIATION          131.         6.        0.6       0.50        2.8




                                F        ALK         Mg         Cl     ALDRIN
                             DISS      TOTAL       DISS       DISS           
                            09104      10121      12102      17203      18130
                           mg/L F      MEQ/L    mg/L Mg    mg/L Cl       ug/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       34         34         34         34          7
 MEAN                         0.4     157.82        19.        20.      0.000
 MINIMUM                      0.1      82.00         7.         7.      0.000
 DATE OF MINIMUM       1980-06-17 1981-07-30 1981-07-30 1981-07-30 1979-03-13
 10TH PERCENTILE              0.2     117.00        13.        11.           
 MEDIAN                       0.4     158.50        20.        20.      0.000
 90TH PERCENTILE              0.5     189.00        24.        27.           
 MAXIMUM                      1.1     213.00        26.        35.      0.000
 DATE OF MAXIMUM       1980-07-29 1981-01-22 1979-07-23 1981-03-25 1980-08-21
 STANDARD DEVIATION           0.2      26.24         4.         6.      0.000




                           ENDRIN   DIELDRIN         Ca         Cr         Cr
                                                   DISS      TOTAL       DISS
                            18140      18150      20103      24002      24052
                             ug/L       ug/L    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          2          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          7         34          9         10
 MEAN                       0.000      0.000     56.588      0.010      0.003
 MINIMUM                    0.000      0.000     31.000      0.000      0.000
 DATE OF MINIMUM       1979-03-13 1979-03-13 1981-07-30 1979-08-21 1979-02-15
 10TH PERCENTILE                                 43.400      0.000      0.000
 MEDIAN                     0.000      0.000     58.000      0.010      0.000
 90TH PERCENTILE                                 64.600      0.020      0.010
 MAXIMUM                    0.000      0.000     75.000      0.030      0.010
 DATE OF MAXIMUM       1980-08-21 1980-08-21 1980-01-29 1981-05-28 1981-11-17
 STANDARD DEVIATION         0.000      0.000      8.464      0.010      0.005




                               Mn         Mn         Fe         Fe         Ni
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      28001
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        0          1          0          3          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         10         11          8          8
 MEAN                        0.29       0.01       6.86       0.06      0.010
 MINIMUM                     0.06       0.00       1.00       0.01      0.000
 DATE OF MINIMUM       1979-02-15 1979-11-27 1979-02-15 1979-02-15 1980-02-21
 10TH PERCENTILE             0.06       0.00       1.02       0.01           
 MEDIAN                      0.17       0.01       2.70       0.02      0.007
 90TH PERCENTILE             0.73       0.02      14.44       0.12           
 MAXIMUM                     0.87       0.02      27.00       0.30      0.024
 DATE OF MAXIMUM       1981-05-28 1980-08-21 1981-05-28 1981-05-28 1981-05-28
 STANDARD DEVIATION          0.28       0.01       8.03       0.09      0.008




                               Ni         Cu         Cu         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            28102      29006      29105      33003      33104
                          mg/L Ni    mg/L Cu    mg/L Cu    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         11         11         10         11
 MEAN                       0.002      0.019      0.005      0.004      0.002
 MINIMUM                    0.000      0.008      0.002      0.002      0.001
 DATE OF MINIMUM       1980-08-21 1979-08-21 1979-11-27 1979-02-15 1979-02-15
 10TH PERCENTILE                       0.008      0.002      0.002      0.001
 MEDIAN                     0.002      0.014      0.005      0.004      0.002
 90TH PERCENTILE                       0.025      0.007      0.006      0.003
 MAXIMUM                    0.005      0.057      0.013      0.010      0.003
 DATE OF MAXIMUM       1981-05-28 1981-05-28 1981-05-28 1981-05-28 1980-08-21
 STANDARD DEVIATION         0.001      0.014      0.003      0.002      0.001




                         FAEC COL       FAEC         Cd         Cd         Ba
                                       STREP      TOTAL       DISS      TOTAL
                            36012      36102      48001      48101      56001
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    mg/L Ba


 NO. OF L-FLAGGED VALUES        0          0          1          8          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         31         10          3         10
 MEAN                       1578.      2365.      0.002      0.002        0.2
 MINIMUM                      40.        10.      0.000      0.001        0.1
 DATE OF MINIMUM       1981-03-25 1980-07-29 1979-02-15 1980-02-21 1979-08-21
 10TH PERCENTILE             100.        23.      0.000      0.001        0.1
 MEDIAN                      980.       550.      0.002      0.001        0.2
 90TH PERCENTILE            4600.      6100.      0.004      0.004        0.4
 MAXIMUM                    5800.     23000.      0.010      0.008        0.4
 DATE OF MAXIMUM       1981-07-30 1979-03-13 1980-02-21 1979-11-27 1981-05-28
 STANDARD DEVIATION         1679.      4579.      0.003      0.002        0.1




                               Ba         Ba         Hg         Pb         Pb
                             DISS      TOTAL       DISS      TOTAL       DISS
                            56101      80016      80111      82001      82101
                          mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        2          2          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          9          8         11         11
 MEAN                         0.1      0.527      0.273      0.016      0.005
 MINIMUM                      0.1      0.000      0.000      0.005      0.000
 DATE OF MINIMUM       1979-02-15 1979-11-27 1979-11-27 1981-11-17 1979-08-21
 10TH PERCENTILE              0.1      0.010      0.000      0.005      0.000
 MEDIAN                       0.1      0.200      0.100      0.014      0.003
 90TH PERCENTILE              0.1      0.670      0.280      0.030      0.008
 MAXIMUM                      0.1      3.400      2.200      0.036      0.020
 DATE OF MAXIMUM       1981-11-17 1981-02-25 1981-02-25 1979-05-22 1979-05-22
 STANDARD DEVIATION           0.0      0.974      0.645      0.010      0.006




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       34
 MEAN                      2009.8
 MINIMUM                    671.2
 DATE OF MINIMUM       1981-01-22
 10TH PERCENTILE            908.5
 MEDIAN                    1557.6
 90TH PERCENTILE           3137.9
 MAXIMUM                   7391.5
 DATE OF MAXIMUM       1981-07-30
 STANDARD DEVIATION        1273.3





 STATION - SUSQUEHANNA RIVER                        STATION NO. 028005
 COUNTRY - UNITED STATES                            DEPTH(M)       2.0
 LOCATION - OCT. 0  LAT. 40/15/17  LONG. 076/53/11  ELEVATION(M)  89.9
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-26 TO 1981-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2      NO2-N
                             COND                                            
                            02041      06001      07004      07105      07207
                            us/cm     mg/L C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      342         57        162        126         99
 MEAN                        169.         6.        0.6       0.94       0.01
 MINIMUM                      85.         1.        0.1       0.06       0.00
 DATE OF MINIMUM       1981-02-22 1979-10-22 1980-11-25 1980-09-02 1980-08-28
 10TH PERCENTILE             103.         2.        0.2       0.40       0.01
 MEDIAN                      137.         5.        0.5       0.99       0.01
 90TH PERCENTILE             307.        10.        1.3       1.40       0.02
 MAXIMUM                     443.        17.        1.8       1.70       0.04
 DATE OF MAXIMUM       1980-10-07 1981-02-21 1981-02-25 1980-04-16 1981-02-12
 STANDARD DEVIATION           80.         4.        0.4       0.35       0.01




                            NO3-N         O2          F        ALK         Mg
                                        DISS       DISS      TOTAL       DISS
                            07313      08102      09104      10121      12102
                           mg/L N    mg/L O2     mg/L F      MEQ/L    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0         22          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      140         99         51         86         72
 MEAN                        1.01       11.0        0.1      39.08         6.
 MINIMUM                     0.06        5.2        0.1       8.00         2.
 DATE OF MINIMUM       1980-09-02 1980-09-16 1979-01-26 1981-02-13 1979-03-08
 10TH PERCENTILE             0.46        8.2        0.1      16.00         2.
 MEDIAN                      0.99       11.2        0.1      40.00         5.
 90TH PERCENTILE             1.50       13.4        0.1      61.20        11.
 MAXIMUM                     2.80       17.6        0.2      78.00        15.
 DATE OF MAXIMUM       1981-02-21 1980-02-25 1980-08-05 1980-10-14 1980-10-01
 STANDARD DEVIATION          0.44        2.2        0.0      16.79         3.




                               Cl      MIREX     ALDRIN     ENDRIN   DIELDRIN
                             DISS                                            
                            17203      18125      18130      18140      18150
                          mg/L Cl       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0         15         15         15         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       73         15         22         22         22
 MEAN                         10.      0.005      0.004      0.004      0.004
 MINIMUM                       4.      0.000      0.000      0.000      0.000
 DATE OF MINIMUM       1979-03-08 1980-03-21 1979-05-15 1979-05-15 1979-05-15
 10TH PERCENTILE               6.      0.000      0.000      0.000      0.000
 MEDIAN                        9.      0.005      0.000      0.000      0.000
 90TH PERCENTILE              18.      0.010      0.010      0.010      0.010
 MAXIMUM                      23.      0.010      0.010      0.010      0.010
 DATE OF MAXIMUM       1980-11-24 1981-03-02 1980-11-29 1980-11-29 1980-11-29
 STANDARD DEVIATION            5.      0.005      0.005      0.005      0.005




                               Ca         Cr         Cr         Mn         Mn
                             DISS      TOTAL       DISS      TOTAL       DISS
                            20103      24002      24052      25004      25104
                          mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        0         19          7          5          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       72         76          5        101         67
 MEAN                      22.344      0.014      0.012       0.47       0.10
 MINIMUM                    8.800      0.010      0.010       0.01       0.00
 DATE OF MINIMUM       1981-02-26 1979-12-04 1979-12-04 1981-07-06 1980-07-08
 10TH PERCENTILE           11.000      0.010      0.010       0.08       0.01
 MEDIAN                    22.000      0.010      0.010       0.28       0.08
 90TH PERCENTILE           34.000      0.020      0.018       1.00       0.18
 MAXIMUM                   45.000      0.040      0.020       2.00       0.39
 DATE OF MAXIMUM       1980-10-01 1981-02-24 1979-09-10 1981-02-21 1981-02-20
 STANDARD DEVIATION         9.229      0.007      0.004       0.47       0.08




                               Fe         Fe         Ni         Ni         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            26004      26104      28001      28102      29006
                          mg/L Fe    mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        1          2          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      105         65         91          9         93
 MEAN                        3.64       0.08      0.017      0.005      0.012
 MINIMUM                     0.11       0.01      0.001      0.001      0.001
 DATE OF MINIMUM       1980-10-14 1979-06-26 1981-02-20 1980-06-02 1980-11-25
 10TH PERCENTILE             0.28       0.01      0.004                 0.003
 MEDIAN                      1.75       0.07      0.011      0.004      0.008
 90TH PERCENTILE             9.62       0.14      0.035                 0.019
 MAXIMUM                    17.00       0.53      0.061      0.014      0.190
 DATE OF MAXIMUM       1981-02-21 1980-11-03 1981-02-21 1981-01-19 1981-02-21
 STANDARD DEVIATION          3.93       0.09      0.014      0.004      0.020




                               Cu         As         As   FAEC COL       FAEC
                             DISS      TOTAL       DISS                 STREP
                            29105      33003      33104      36012      36102
                          mg/L Cu    mg/L As    mg/L As   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        1          1          2          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          1          0
 NO. OF UNFLAGGED VALUES       11         11         10         29         32
 MEAN                       0.004      0.002      0.001       158.       325.
 MINIMUM                    0.001      0.000      0.000         1.         6.
 DATE OF MINIMUM       1981-01-19 1980-06-02 1979-12-04 1981-04-01 1980-02-25
 10TH PERCENTILE            0.001      0.000      0.000         5.         9.
 MEDIAN                     0.002      0.001      0.001        44.        74.
 90TH PERCENTILE            0.008      0.003      0.002       237.       712.
 MAXIMUM                    0.009      0.003      0.002      1400.      2700.
 DATE OF MAXIMUM       1981-09-01 1980-03-17 1981-09-01 1979-11-05 1979-03-08
 STANDARD DEVIATION         0.003      0.001      0.001       305.       589.




                               Cd         Cd         Ba         Ba         Ba
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            48001      48101      56001      56101      80016
                          mg/L Cd    mg/L Cd    mg/L Ba    mg/L Ba    ug/L Hg


 NO. OF L-FLAGGED VALUES       48          5          5          1         75
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       47          7          6         11         14
 MEAN                       0.001      0.001        0.1        0.0      0.119
 MINIMUM                    0.000      0.000        0.0        0.0      0.100
 DATE OF MINIMUM       1979-06-26 1979-06-26 1979-12-04 1979-06-26 1980-03-17
 10TH PERCENTILE            0.000      0.000        0.0        0.0      0.100
 MEDIAN                     0.001      0.001        0.1        0.0      0.100
 90TH PERCENTILE            0.001      0.002        0.1        0.1      0.100
 MAXIMUM                    0.002      0.002        0.1        0.1      0.500
 DATE OF MAXIMUM       1979-09-10 1981-05-04 1981-12-10 1981-09-01 1979-09-10
 STANDARD DEVIATION         0.001      0.001        0.0        0.0      0.077




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


 NO. OF L-FLAGGED VALUES        8          6          3          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        4         87          9        110
 MEAN                       0.217      0.016      0.001     1682.9
 MINIMUM                    0.100      0.001      0.000       94.3
 DATE OF MINIMUM       1980-03-17 1980-04-29 1979-03-08 1980-10-14
 10TH PERCENTILE            0.100      0.002      0.000      134.2
 MEDIAN                     0.100      0.010      0.001      628.7
 90TH PERCENTILE            0.500      0.029      0.002     4956.0
 MAXIMUM                    0.500      0.140      0.009     9798.7
 DATE OF MAXIMUM       1979-09-10 1981-02-24 1981-09-01 1979-03-08
 STANDARD DEVIATION         0.180      0.021      0.002     2099.6





 STATION - COLORADO RIVER                           STATION NO. 028006
 COUNTRY - UNITED STATES                            DEPTH(M)       7.7
 LOCATION - OCT. 1  LAT. 36/00/55  LONG. 114/44/16  ELEVATION(M) 196.6
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-09 TO 1981-11-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC          B        TOC   ORG CARB     N KJEL
                             COND      TOTAL                  DISS           
                            02041      05001      06001      06101      07004
                            us/cm     mg/L B     mg/L C     mg/L C     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       35          3         22          1         34
 MEAN                       1110.        0.2         4.       32.0        0.6
 MINIMUM                    1050.                    2.                   0.2
 DATE OF MINIMUM       1981-05-13            1979-01-09            1979-01-09
 10TH PERCENTILE            1075.                    2.                   0.2
 MEDIAN                     1100.                    4.                   0.6
 90TH PERCENTILE            1150.                    9.                   1.0
 MAXIMUM                    1180.                    9.                   1.2
 DATE OF MAXIMUM       1980-06-10            1980-10-07            1979-10-16
 STANDARD DEVIATION           27.                    2.                   0.3




                           NO3NO2         O2          F        ALK   FIX SUSP
                                        DISS       DISS      TOTAL     SOLIDS
                            07105      08102      09104      10121      10501
                           mg/L N    mg/L O2     mg/L F      MEQ/L       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       34         33         35         23          1
 MEAN                        0.38        7.9        0.4     124.48         0.
 MINIMUM                     0.32        6.4        0.3     100.00           
 DATE OF MINIMUM       1979-02-13 1981-05-13 1979-01-09 1979-01-09           
 10TH PERCENTILE             0.32        6.8        0.3     120.00           
 MEDIAN                      0.37        7.8        0.3     130.00           
 90TH PERCENTILE             0.41        8.9        0.4     130.00           
 MAXIMUM                     0.51       11.0        0.9     130.00           
 DATE OF MAXIMUM       1979-11-14 1979-02-13 1979-08-07 1980-01-08           
 STANDARD DEVIATION          0.04        1.0        0.1       7.22           




                               Mg         Cl         Ca         Cr         Cr
                             DISS       DISS       DISS      TOTAL       DISS
                            12102      17203      20103      24002      24052
                          mg/L Mg    mg/L Cl    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          2          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       34         35         35         11         10
 MEAN                         29.        90.     83.114      0.005      0.004
 MINIMUM                      26.        83.     78.000      0.000      0.000
 DATE OF MINIMUM       1981-11-07 1979-11-14 1979-11-14 1979-02-13 1979-02-13
 10TH PERCENTILE              28.        85.     80.000      0.000      0.000
 MEDIAN                       29.        89.     83.000      0.000      0.000
 90TH PERCENTILE              31.        96.     86.000      0.010      0.010
 MAXIMUM                      31.       100.     90.000      0.010      0.010
 DATE OF MAXIMUM       1980-03-11 1981-11-07 1979-06-12 1981-11-07 1981-11-07
 STANDARD DEVIATION            1.         5.      2.665      0.005      0.005




                               Mn         Mn         Fe         Fe         Ni
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            25004      25104      26004      26104      28001
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni


 NO. OF L-FLAGGED VALUES        2          3          1          9          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          8         12          4         10
 MEAN                        0.01       0.00       0.07       0.01      0.003
 MINIMUM                     0.00       0.00       0.01       0.01      0.001
 DATE OF MINIMUM       1980-02-12 1979-05-08 1979-02-13 1979-02-13 1981-05-13
 10TH PERCENTILE             0.00       0.00       0.01       0.01      0.001
 MEDIAN                      0.01       0.00       0.04       0.01      0.004
 90TH PERCENTILE             0.02       0.00       0.08       0.02      0.005
 MAXIMUM                     0.02       0.01       0.26       0.06      0.005
 DATE OF MAXIMUM       1981-11-07 1979-02-13 1981-11-07 1981-11-07 1980-11-04
 STANDARD DEVIATION          0.00       0.00       0.06       0.01      0.001




                               Ni         Cu         Cu         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            28102      29006      29105      33003      33104
                          mg/L Ni    mg/L Cu    mg/L Cu    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        1          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         13         12         13         13
 MEAN                       0.001      0.003      0.002      0.004      0.003
 MINIMUM                    0.000      0.002      0.000      0.003      0.003
 DATE OF MINIMUM       1979-11-14 1979-11-14 1979-05-08 1979-02-13 1979-02-13
 10TH PERCENTILE            0.000      0.002      0.000      0.003      0.003
 MEDIAN                     0.001      0.004      0.002      0.003      0.003
 90TH PERCENTILE            0.002      0.005      0.003      0.005      0.004
 MAXIMUM                    0.004      0.005      0.003      0.006      0.005
 DATE OF MAXIMUM       1980-11-04 1981-11-07 1980-05-13 1981-11-07 1981-11-07
 STANDARD DEVIATION         0.001      0.001      0.001      0.001      0.001




                         FAEC COL       FAEC         Cd         Cd         Ba
                                       STREP      TOTAL       DISS      TOTAL
                            36012      36102      48001      48101      56001
                         No/100ml   No/100ml    mg/L Cd    mg/L Cd    mg/L Ba


 NO. OF L-FLAGGED VALUES       16         15          6          8          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         16          7          5         10
 MEAN                          2.         4.      0.001      0.001        0.1
 MINIMUM                       0.         0.      0.000      0.000        0.0
 DATE OF MINIMUM       1979-09-12 1979-09-12 1979-08-07 1979-02-13 1980-02-12
 10TH PERCENTILE               1.         1.      0.000      0.000        0.0
 MEDIAN                        1.         1.      0.001      0.001        0.1
 90TH PERCENTILE               4.         5.      0.002      0.002        0.2
 MAXIMUM                       8.        56.      0.002      0.002        0.4
 DATE OF MAXIMUM       1981-09-16 1979-03-14 1979-05-08 1979-11-14 1979-11-14
 STANDARD DEVIATION            2.        11.      0.001      0.001        0.1





                               Ba         Ba         Hg         Pb         Pb
                             DISS      TOTAL       DISS      TOTAL       DISS
                            56101      80016      80111      82001      82101
                          mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        3          3          7          1          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         10          6         12         11
 MEAN                         0.1      0.092      0.069      0.007      0.002
 MINIMUM                      0.1      0.000      0.000      0.000      0.000
 DATE OF MINIMUM       1979-02-13 1980-02-12 1979-11-14 1980-02-12 1979-08-07
 10TH PERCENTILE              0.1      0.000      0.000      0.000      0.000
 MEDIAN                       0.1      0.100      0.100      0.002      0.001
 90TH PERCENTILE              0.1      0.170      0.100      0.005      0.005
 MAXIMUM                      0.1      0.300      0.100      0.067      0.010
 DATE OF MAXIMUM       1981-11-07 1979-05-08 1979-08-07 1979-05-08 1979-05-08
 STANDARD DEVIATION           0.0      0.086      0.048      0.018      0.003




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       43
 MEAN                       428.9
 MINIMUM                     16.3
 DATE OF MINIMUM       1979-02-13
 10TH PERCENTILE             97.2
 MEDIAN                     436.1
 90TH PERCENTILE            674.3
 MAXIMUM                    818.4
 DATE OF MAXIMUM       1980-06-10
 STANDARD DEVIATION         211.4





 STATION - POTOMAC RIVER                            STATION NO. 028007
 COUNTRY - UNITED STATES                            DEPTH(M)       5.2
 LOCATION - OCT. 0  LAT. 38/55/46  LONG. 077/07/02  ELEVATION(M)   1.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-02 TO 1981-11-26

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2      NO2-N
                             COND                                            
                            02041      06001      07004      07105      07207
                            us/cm     mg/L C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      482         77        353        346        229
 MEAN                        272.         6.        0.7       1.11       0.02
 MINIMUM                       0.         1.        0.0       0.03       0.00
 DATE OF MINIMUM       1979-10-11 1979-10-17 1979-01-18 1981-08-18 1979-10-09
 10TH PERCENTILE             175.         3.        0.3       0.40       0.01
 MEDIAN                      268.         5.        0.5       1.10       0.01
 90TH PERCENTILE             384.        12.        1.4       1.70       0.03
 MAXIMUM                     562.        25.        3.5       2.90       0.50
 DATE OF MAXIMUM       1981-09-11 1980-03-22 1979-09-06 1981-05-14 1981-05-14
 STANDARD DEVIATION           86.         4.        0.5       0.49       0.03




                            NO3-N         O2          F        ALK         Mg
                                        DISS       DISS      TOTAL       DISS
                            07313      08102      09104      10121      12102
                           mg/L N    mg/L O2     mg/L F      MEQ/L    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0         10          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       74        428         70         56         82
 MEAN                        1.25       11.2        0.1      61.84         6.
 MINIMUM                     0.25        0.0        0.1      29.00         2.
 DATE OF MINIMUM       1980-08-13 1979-10-11 1979-01-16 1979-02-27 1979-02-27
 10TH PERCENTILE             0.53        8.0        0.1      36.80         4.
 MEDIAN                      1.30       11.1        0.1      63.50         6.
 90TH PERCENTILE             1.80       14.9        0.1      83.60         9.
 MAXIMUM                     2.50       18.8        0.7     100.00        13.
 DATE OF MAXIMUM       1981-02-22 1979-02-25 1979-12-12 1980-02-11 1980-09-29
 STANDARD DEVIATION          0.49        2.8        0.1      17.56         2.




                               Cl      MIREX     ALDRIN     ENDRIN   DIELDRIN
                             DISS                                            
                            17203      18125      18130      18140      18150
                          mg/L Cl       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          9          9          9          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       82         26         27         27         27
 MEAN                         11.      0.003      0.002      0.002      0.003
 MINIMUM                       4.      0.000      0.000      0.000      0.000
 DATE OF MINIMUM       1979-02-27 1979-03-01 1979-03-01 1979-03-01 1979-03-01
 10TH PERCENTILE               6.      0.000      0.000      0.000      0.000
 MEDIAN                       10.      0.000      0.000      0.000      0.000
 90TH PERCENTILE              18.      0.010      0.010      0.010      0.010
 MAXIMUM                      29.      0.010      0.010      0.010      0.010
 DATE OF MAXIMUM       1980-10-27 1981-09-01 1981-09-01 1981-09-01 1981-09-01
 STANDARD DEVIATION            5.      0.004      0.004      0.004      0.005




                               Ca         Cr         Cr         Mn         Mn
                             DISS      TOTAL       DISS      TOTAL       DISS
                            20103      24002      24052      25004      25104
                          mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          4          3          0          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       82         35          9         84         75
 MEAN                      27.927      0.012      0.013       0.27       0.01
 MINIMUM                   13.000      0.000      0.010       0.01       0.00
 DATE OF MINIMUM       1979-02-27 1979-10-17 1979-12-12 1979-12-12 1979-03-27
 10TH PERCENTILE           18.200      0.004      0.010       0.02       0.00
 MEDIAN                    28.000      0.010      0.010       0.16       0.01
 90TH PERCENTILE           37.400      0.020      0.020       0.65       0.02
 MAXIMUM                   53.000      0.040      0.030       1.20       0.24
 DATE OF MAXIMUM       1981-01-27 1979-09-06 1979-06-13 1979-09-06 1981-02-25
 STANDARD DEVIATION         7.964      0.008      0.007       0.28       0.03




                               Fe         Fe         Ni         Ni         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            26004      26104      28001      28102      29006
                          mg/L Fe    mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          6          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       83         74         38          9         38
 MEAN                        4.63       0.06      0.008      0.001      0.007
 MINIMUM                     0.07       0.00      0.000      0.000      0.001
 DATE OF MINIMUM       1980-04-02 1979-07-17 1980-07-15 1979-12-12 1979-12-12
 10TH PERCENTILE             0.21       0.01      0.002                 0.001
 MEDIAN                      1.80       0.04      0.006      0.001      0.004
 90TH PERCENTILE            14.00       0.11      0.018                 0.014
 MAXIMUM                    30.00       0.74      0.030      0.004      0.034
 DATE OF MAXIMUM       1980-03-22 1981-02-25 1979-03-01 1980-09-17 1979-09-06
 STANDARD DEVIATION          6.30       0.09      0.007      0.001      0.007




                               Cu         As         As   FAEC COL       FAEC
                             DISS      TOTAL       DISS                 STREP
                            29105      33003      33104      36012      36102
                          mg/L Cu    mg/L As    mg/L As   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        2          2          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         15         12         30         32
 MEAN                       0.002      0.001      0.001       593.      3423.
 MINIMUM                    0.000      0.000      0.000         1.         2.
 DATE OF MINIMUM       1980-06-17 1980-06-17 1979-12-12 1980-02-11 1980-02-11
 10TH PERCENTILE            0.000      0.000      0.000         6.         5.
 MEDIAN                     0.002      0.001      0.001        56.       274.
 90TH PERCENTILE            0.003      0.002      0.002      1264.      2248.
 MAXIMUM                    0.004      0.003      0.003     11000.     84000.
 DATE OF MAXIMUM       1981-11-10 1979-04-26 1981-09-28 1979-09-06 1979-09-06
 STANDARD DEVIATION         0.001      0.001      0.001      1953.     14770.





                               Cd         Cd         Ba         Ba         Ba
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            48001      48101      56001      56101      80016
                          mg/L Cd    mg/L Cd    mg/L Ba    mg/L Ba    ug/L Hg


 NO. OF L-FLAGGED VALUES        4          2          2          1         14
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         10         10          9         26
 MEAN                       0.000      0.002        0.1        0.0      0.190
 MINIMUM                    0.000      0.000        0.0        0.0      0.100
 DATE OF MINIMUM       1979-03-01 1979-03-27 1979-12-12 1979-09-06 1979-10-17
 10TH PERCENTILE            0.000      0.000        0.0        0.0      0.100
 MEDIAN                     0.000      0.001        0.1        0.0      0.100
 90TH PERCENTILE            0.001      0.003        0.2        0.1      0.500
 MAXIMUM                    0.002      0.012        0.2        0.1      0.500
 DATE OF MAXIMUM       1979-07-17 1980-03-11 1981-03-31 1981-03-31 1979-09-06
 STANDARD DEVIATION         0.001      0.003        0.1        0.0      0.163




                               Hg         Pb         Pb    BENZENE       INST
                             DISS      TOTAL       DISS                DISCHG
                            80111      82001      82101      95100      97160
                          ug/L Hg    mg/L Pb    mg/L Pb       ug/L       m3/S


 NO. OF L-FLAGGED VALUES        6          0          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5         49         20          2        562
 MEAN                       0.255      0.051      0.005        0.0      664.9
 MINIMUM                    0.100      0.000      0.000                  23.5
 DATE OF MINIMUM       1979-12-12 1980-03-11 1979-12-12            1981-08-28
 10TH PERCENTILE            0.100      0.003      0.000                  66.6
 MEDIAN                     0.100      0.011      0.001                 311.5
 90TH PERCENTILE            0.500      0.070      0.009                1605.6
 MAXIMUM                    0.600      1.300      0.060                5777.3
 DATE OF MAXIMUM       1981-09-28 1981-09-28 1980-03-18            1979-02-27
 STANDARD DEVIATION         0.216      0.187      0.013                 899.3





 STATION - DELAWARE RIVER                           STATION NO. 028008
 COUNTRY - UNITED STATES                            DEPTH(M)       1.4
 LOCATION - OCT. 0  LAT. 40/13/18  LONG. 074/46/42  ELEVATION(M)   3.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-30 TO 1981-11-17

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC     N KJEL     NO3NO2         O2
                             COND                                        DISS
                            02041      06001      07004      07105      08102
                            us/cm     mg/L C     mg/L N     mg/L N    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       32         20         31         32         33
 MEAN                        174.         3.        0.5       0.97       11.4
 MINIMUM                      81.         2.        0.2       0.58        6.9
 DATE OF MINIMUM       1979-11-29 1979-12-12 1980-07-24 1981-05-20 1979-07-18
 10TH PERCENTILE             105.         2.        0.3       0.66        8.3
 MEDIAN                      184.         3.        0.4       1.00       11.6
 90TH PERCENTILE             225.         5.        0.9       1.30       13.9
 MAXIMUM                     249.         9.        1.3       1.30       16.9
 DATE OF MAXIMUM       1981-01-28 1979-03-14 1981-08-17 1980-01-23 1980-02-13
 STANDARD DEVIATION           47.         2.        0.3       0.23        2.3




                              BOD          F        ALK         Mg         Cl
                                        DISS      TOTAL       DISS       DISS
                            08201      09104      10121      12102      17203
                          mg/L O2     mg/L F      MEQ/L    mg/L Mg    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          6          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       31         27         20         33         33
 MEAN                          2.        0.1      36.50         5.        11.
 MINIMUM                       1.        0.1      16.00         2.         5.
 DATE OF MINIMUM       1979-12-12 1979-01-30 1980-03-26 1979-11-29 1979-11-29
 10TH PERCENTILE               1.        0.1      19.00         3.         7.
 MEDIAN                        2.        0.1      36.00         5.        11.
 90TH PERCENTILE               4.        0.1      52.00         7.        15.
 MAXIMUM                       4.        0.1      62.00         7.        18.
 DATE OF MAXIMUM       1979-08-08 1981-11-17 1980-07-24 1980-07-24 1981-01-28
 STANDARD DEVIATION            1.        0.0      14.23         2.         3.




                           ALDRIN     ENDRIN   DIELDRIN         Ca         Cr
                                                              DISS      TOTAL
                            18130      18140      18150      20103      24002
                             ug/L       ug/L       ug/L    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          0          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6          6          6         33          8
 MEAN                       0.000      0.000      0.000     16.130      0.014
 MINIMUM                    0.000      0.000      0.000      8.500      0.010
 DATE OF MINIMUM       1979-02-28 1979-02-28 1979-02-28 1979-11-29 1979-11-29
 10TH PERCENTILE                                             9.050      0.010
 MEDIAN                     0.000      0.000      0.000     17.000      0.010
 90TH PERCENTILE                                            21.000      0.020
 MAXIMUM                    0.000      0.000      0.000     22.000      0.020
 DATE OF MAXIMUM       1980-08-12 1980-08-12 1980-08-12 1980-02-13 1979-08-08
 STANDARD DEVIATION         0.000      0.000      0.000      4.367      0.005




                               Cr         Mn         Mn         Fe         Fe
                             DISS      TOTAL       DISS      TOTAL       DISS
                            24052      25004      25104      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        6          0          2          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6         12         10         12         11
 MEAN                       0.011       0.07       0.03       0.63       0.09
 MINIMUM                    0.000       0.01       0.00       0.14       0.01
 DATE OF MINIMUM       1979-02-28 1980-11-24 1979-08-08 1980-02-13 1979-08-08
 10TH PERCENTILE            0.002       0.01       0.00       0.14       0.01
 MEDIAN                     0.010       0.06       0.01       0.34       0.02
 90TH PERCENTILE            0.017       0.11       0.09       1.22       0.07
 MAXIMUM                    0.020       0.26       0.12       2.60       0.79
 DATE OF MAXIMUM       1979-08-08 1979-11-29 1979-11-29 1979-11-29 1979-11-29
 STANDARD DEVIATION         0.005       0.07       0.04       0.72       0.22




                               Ni         Ni         Cu         Cu         As
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            28001      28102      29006      29105      33003
                          mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu    mg/L As


 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          9         12         12         12
 MEAN                       0.005      0.002      0.007      0.004      0.001
 MINIMUM                    0.001      0.000      0.004      0.002      0.000
 DATE OF MINIMUM       1980-05-15 1980-05-15 1980-08-12 1979-02-28 1980-11-24
 10TH PERCENTILE                                  0.004      0.002      0.000
 MEDIAN                     0.004      0.002      0.006      0.003      0.001
 90TH PERCENTILE                                  0.010      0.004      0.002
 MAXIMUM                    0.017      0.005      0.012      0.008      0.003
 DATE OF MAXIMUM       1981-05-20 1981-02-18 1981-11-17 1981-11-17 1979-02-28
 STANDARD DEVIATION         0.005      0.002      0.002      0.002      0.001




                               As   FAEC COL       FAEC         Cd         Cd
                             DISS                 STREP      TOTAL       DISS
                            33104      36012      36102      48001      48101
                          mg/L As   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          1          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         31         31         11          9
 MEAN                       0.001       403.       498.      0.001      0.002
 MINIMUM                    0.000         1.        10.      0.000      0.000
 DATE OF MINIMUM       1980-11-24 1980-11-24 1980-01-23 1979-02-28 1979-02-28
 10TH PERCENTILE            0.000         3.        25.      0.000      0.000
 MEDIAN                     0.001        26.       129.      0.001      0.001
 90TH PERCENTILE            0.002       946.       871.      0.002      0.002
 MAXIMUM                    0.002      5700.      5700.      0.002      0.010
 DATE OF MAXIMUM       1979-05-16 1979-11-29 1981-06-24 1980-02-13 1980-08-12
 STANDARD DEVIATION         0.001      1129.      1092.      0.001      0.003



                               Ba         Ba         Ba         Hg         Pb
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            56001      56101      80016      80111      82001
                          mg/L Ba    mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        5          4          8          9          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          8          4          3         12
 MEAN                         0.1        0.0      0.208      0.208      0.007
 MINIMUM                      0.0        0.0      0.100      0.100      0.003
 DATE OF MINIMUM       1979-11-29 1979-08-08 1979-11-29 1979-11-29 1980-08-12
 10TH PERCENTILE              0.0        0.0      0.100      0.100      0.003
 MEDIAN                       0.1        0.0      0.100      0.100      0.005
 90TH PERCENTILE              0.1        0.1      0.500      0.500      0.013
 MAXIMUM                      0.1        0.1      0.500      0.500      0.021
 DATE OF MAXIMUM       1979-08-08 1980-08-12 1979-08-08 1979-08-08 1981-02-18
 STANDARD DEVIATION           0.0        0.1      0.178      0.178      0.006




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


 NO. OF L-FLAGGED VALUES        2          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       10         35
 MEAN                       0.001      387.3
 MINIMUM                    0.000       81.8
 DATE OF MINIMUM       1979-05-16 1980-08-12
 10TH PERCENTILE            0.000       84.8
 MEDIAN                     0.000      186.9
 90TH PERCENTILE            0.002      899.2
 MAXIMUM                    0.003     2772.5
 DATE OF MAXIMUM       1980-08-12 1979-03-07
 STANDARD DEVIATION         0.001      512.4





 STATION - OHIO RIVER                               STATION NO. 028009
 COUNTRY - UNITED STATES                            DEPTH(M)      11.2
 LOCATION - OCT. 0  LAT. 37/12/13  LONG. 089/02/27  ELEVATION(M)  94.3
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-02-13 TO 1981-11-04

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC         Li        TOC     N KJEL     NO3NO2
                             COND       DISS                                 
                            02041      03101      06001      07004      07105
                            us/cm    mg/L Li     mg/L C     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       32          1         20         31         32
 MEAN                        298.        0.0         5.        0.6       1.08
 MINIMUM                     215.                    2.        0.3       0.39
 DATE OF MINIMUM       1979-02-13            1979-11-02 1979-04-17 1980-09-17
 10TH PERCENTILE             222.                    3.        0.3       0.57
 MEDIAN                      296.                    5.        0.5       0.98
 90TH PERCENTILE             375.                    7.        1.0       1.50
 MAXIMUM                     426.                    9.        1.3       3.00
 DATE OF MAXIMUM       1981-11-04            1981-06-11 1981-02-26 1980-06-18
 STANDARD DEVIATION           56.                    2.        0.3       0.51




                               O2          F        ALK         Mg         Cl
                             DISS       DISS      TOTAL       DISS       DISS
                            08102      09104      10121      12102      17203
                          mg/L O2     mg/L F      MEQ/L    mg/L Mg    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       15         27         16         28         29
 MEAN                         9.3        0.2      71.25         8.        15.
 MINIMUM                      6.4        0.1      57.00         5.         9.
 DATE OF MINIMUM       1980-06-18 1979-02-13 1980-05-21 1979-02-13 1979-11-30
 10TH PERCENTILE              6.7        0.1      57.60         6.        10.
 MEDIAN                       8.2        0.2      72.00         8.        14.
 90TH PERCENTILE             11.9        0.2      84.80        11.        20.
 MAXIMUM                     14.8        1.4      86.00        11.        29.
 DATE OF MAXIMUM       1981-01-21 1981-05-20 1980-06-18 1980-11-04 1981-11-04
 STANDARD DEVIATION           2.3        0.2       9.60         2.         5.




                           ALDRIN     ENDRIN   DIELDRIN         Ca         Cr
                                                              DISS      TOTAL
                            18130      18140      18150      20103      24002
                             ug/L       ug/L       ug/L    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          0          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          7          7         28          8
 MEAN                       0.000      0.000      0.000     33.429      0.015
 MINIMUM                    0.000      0.000      0.000     25.000      0.010
 DATE OF MINIMUM       1979-02-13 1979-02-13 1979-02-13 1981-08-25 1979-11-30
 10TH PERCENTILE                                            26.000      0.010
 MEDIAN                     0.000      0.000      0.000     34.000      0.010
 90TH PERCENTILE                                            39.100      0.027
 MAXIMUM                    0.000      0.000      0.000     43.000      0.030
 DATE OF MAXIMUM       1980-08-13 1980-08-13 1980-08-13 1980-06-18 1981-02-26
 STANDARD DEVIATION         0.000      0.000      0.000      4.467      0.008




                               Cr         Mn         Mn         Fe         Fe
                             DISS      TOTAL       DISS      TOTAL       DISS
                            24052      25004      25104      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        7          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        6         13         13         13         12
 MEAN                       0.012       0.20       0.01       3.25       0.04
 MINIMUM                    0.000       0.08       0.00       0.64       0.00
 DATE OF MINIMUM       1979-02-13 1981-08-25 1979-04-17 1981-08-25 1980-08-13
 10TH PERCENTILE            0.000       0.08       0.00       0.69       0.00
 MEDIAN                     0.010       0.18       0.01       2.60       0.03
 90TH PERCENTILE            0.020       0.31       0.03       4.88       0.08
 MAXIMUM                    0.020       0.59       0.04      12.00       0.14
 DATE OF MAXIMUM       1979-08-29 1981-02-26 1981-02-26 1981-02-26 1979-11-30
 STANDARD DEVIATION         0.007       0.14       0.01       2.97       0.04




                               Ni         Ni         Cu         Cu         As
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            28001      28102      29006      29105      33003
                          mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu    mg/L As


 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          9         13         13         13
 MEAN                       0.010      0.001      0.016      0.006      0.001
 MINIMUM                    0.003      0.000      0.004      0.003      0.000
 DATE OF MINIMUM       1980-02-20 1979-11-30 1980-11-04 1980-11-04 1980-02-20
 10TH PERCENTILE                                  0.005      0.003      0.000
 MEDIAN                     0.008      0.001      0.014      0.006      0.001
 90TH PERCENTILE                                  0.030      0.008      0.003
 MAXIMUM                    0.026      0.003      0.039      0.009      0.003
 DATE OF MAXIMUM       1981-02-26 1981-11-04 1979-08-29 1981-05-20 1980-08-13
 STANDARD DEVIATION         0.007      0.001      0.011      0.002      0.001




                               As   FAEC COL       FAEC         Cd         Cd
                             DISS                 STREP      TOTAL       DISS
                            33104      36012      36102      48001      48101
                          mg/L As   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          1          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         28         31         16         15
 MEAN                       0.001        93.       170.      0.020      0.007
 MINIMUM                    0.000         1.         3.      0.000      0.000
 DATE OF MINIMUM       1979-11-30 1981-01-21 1980-08-13 1981-03-10 1980-08-13
 10TH PERCENTILE            0.000         9.         6.      0.000      0.000
 MEDIAN                     0.001        68.        38.      0.005      0.002
 90TH PERCENTILE            0.002       184.       222.      0.056      0.018
 MAXIMUM                    0.003       379.      2600.      0.090      0.036
 DATE OF MAXIMUM       1979-08-29 1981-05-20 1981-05-20 1980-05-21 1980-02-20
 STANDARD DEVIATION         0.001       100.       476.      0.029      0.010




                               Ba         Ba         Ba         Hg         Pb
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            56001      56101      80016      80111      82001
                          mg/L Ba    mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        4          2          7          9          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          9          6          4         12
 MEAN                         0.1        0.0      0.262      0.246      0.014
 MINIMUM                      0.0        0.0      0.100      0.100      0.004
 DATE OF MINIMUM       1980-05-21 1979-11-30 1980-05-21 1979-11-30 1980-11-04
 10TH PERCENTILE              0.0        0.0      0.100      0.100      0.004
 MEDIAN                       0.1        0.0      0.200      0.100      0.012
 90TH PERCENTILE              0.1        0.1      0.500      0.500      0.025
 MAXIMUM                      0.1        0.1      0.500      0.500      0.033
 DATE OF MAXIMUM       1980-02-20 1980-08-13 1979-08-29 1979-08-29 1981-02-26
 STANDARD DEVIATION           0.0        0.1      0.180      0.185      0.009




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


 NO. OF L-FLAGGED VALUES        1          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       10         32
 MEAN                       0.001     9403.1
 MINIMUM                    0.000     1475.5
 DATE OF MINIMUM       1979-08-29 1980-10-15
 10TH PERCENTILE            0.000     2248.0
 MEDIAN                     0.001     7320.7
 90TH PERCENTILE            0.002    17768.0
 MAXIMUM                    0.002    30019.2
 DATE OF MAXIMUM       1981-02-26 1979-03-16
 STANDARD DEVIATION         0.001     6936.1





 STATION - RIO GRANDE                               STATION NO. 028010
 COUNTRY - UNITED STATES                            DEPTH(M)       1.9
 LOCATION - OCT. 1  LAT. 25/52/35  LONG. 097/27/15  ELEVATION(M)   2.7
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-10 TO 1981-12-02

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC   ORG CARB     N KJEL     NO3NO2
                             COND                  DISS                      
                            02041      06001      06101      07004      07105
                            us/cm     mg/L C     mg/L C     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         21          1         35         33
 MEAN                       1423.         9.        3.7        0.9       0.14
 MINIMUM                     878.         4.                   0.3       0.00
 DATE OF MINIMUM       1981-07-15 1979-01-10            1979-03-14 1980-03-25
 10TH PERCENTILE             981.         5.                   0.6       0.00
 MEDIAN                     1360.         7.                   0.9       0.09
 90TH PERCENTILE            1915.        12.                   1.3       0.32
 MAXIMUM                    2370.        20.                   1.9       0.64
 DATE OF MAXIMUM       1979-09-12 1981-05-13            1979-02-07 1980-08-20
 STANDARD DEVIATION          363.         4.                   0.3       0.16




                            NO2-N      NO3-N         O2        BOD          F
                                                   DISS                  DISS
                            07207      07313      08102      08201      09104
                           mg/L N     mg/L N    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        2          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         10         34         34         34
 MEAN                        0.02       0.14        8.2         2.        0.7
 MINIMUM                     0.01       0.00        4.9         0.        0.5
 DATE OF MINIMUM       1979-04-25 1979-05-31 1980-06-24 1979-01-10 1979-10-17
 10TH PERCENTILE             0.01       0.00        6.2         1.        0.5
 MEDIAN                      0.02       0.17        8.0         3.        0.7
 90TH PERCENTILE             0.02       0.27       10.4         4.        0.8
 MAXIMUM                     0.04       0.28       12.5         4.        1.1
 DATE OF MAXIMUM       1979-09-12 1979-01-10 1979-12-18 1980-12-17 1979-11-14
 STANDARD DEVIATION          0.01       0.12        1.8         1.        0.1




                              ALK         Mg         Cl     ALDRIN     ENDRIN
                            TOTAL       DISS       DISS                      
                            10121      12102      17203      18130      18140
                            MEQ/L    mg/L Mg    mg/L Cl       ug/L       ug/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       34         34         34          9          9
 MEAN                      147.79        28.       201.      0.000      0.000
 MINIMUM                    90.00        17.        97.      0.000      0.000
 DATE OF MINIMUM       1981-07-15 1980-08-20 1981-07-15 1979-02-07 1979-02-07
 10TH PERCENTILE           102.80        18.       108.                      
 MEDIAN                    140.00        26.       180.      0.000      0.000
 90TH PERCENTILE           194.20        38.       310.                      
 MAXIMUM                   262.00        47.       410.      0.000      0.000
 DATE OF MAXIMUM       1979-10-17 1979-09-12 1979-09-12 1980-08-20 1980-08-20
 STANDARD DEVIATION         38.37         8.        77.      0.000      0.000




                         DIELDRIN         Ca         Cr         Cr         Mn
                                        DISS      TOTAL       DISS      TOTAL
                            18150      20103      24002      24052      25004
                             ug/L    mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         34         11         10         12
 MEAN                       0.000     97.618      0.005      0.005       0.12
 MINIMUM                    0.000     64.000      0.000      0.000       0.05
 DATE OF MINIMUM       1979-02-07 1980-08-20 1979-02-07 1979-02-07 1981-08-19
 10TH PERCENTILE                      68.000      0.000      0.000       0.05
 MEDIAN                     0.000     94.000      0.000      0.000       0.09
 90TH PERCENTILE                     130.000      0.010      0.019       0.20
 MAXIMUM                    0.000    150.000      0.030      0.020       0.22
 DATE OF MAXIMUM       1980-08-20 1981-02-19 1981-04-08 1981-04-08 1980-10-22
 STANDARD DEVIATION         0.000     23.320      0.009      0.008       0.06




                               Mn         Fe         Fe         Ni         Ni
                             DISS      TOTAL       DISS      TOTAL       DISS
                            25104      26004      26104      28001      28102
                          mg/L Mn    mg/L Fe    mg/L Fe    mg/L Ni    mg/L Ni


 NO. OF L-FLAGGED VALUES        2          0          8          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         11          3          9          8
 MEAN                        0.01       1.09       0.01      0.003      0.001
 MINIMUM                     0.00       0.41       0.00      0.000      0.000
 DATE OF MINIMUM       1979-02-07 1979-08-16 1979-02-07 1981-01-15 1979-10-17
 10TH PERCENTILE             0.00       0.41       0.00                      
 MEDIAN                      0.00       0.63       0.01      0.002      0.001
 90TH PERCENTILE             0.02       2.06       0.01                      
 MAXIMUM                     0.03       3.30       0.02      0.007      0.004
 DATE OF MAXIMUM       1979-10-17 1981-10-22 1980-01-24 1980-10-22 1980-10-22
 STANDARD DEVIATION          0.01       0.91       0.00      0.002      0.001




                               Cu         Cu         As         As   FAEC COL
                            TOTAL       DISS      TOTAL       DISS           
                            29006      29105      33003      33104      36012
                          mg/L Cu    mg/L Cu    mg/L As    mg/L As   No/100ml


 NO. OF L-FLAGGED VALUES        1          2          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          9         11         11         34
 MEAN                       0.012      0.001      0.003      0.003      3830.
 MINIMUM                    0.000      0.000      0.002      0.002        21.
 DATE OF MINIMUM       1980-04-23 1979-10-17 1979-08-16 1979-02-07 1981-04-08
 10TH PERCENTILE            0.000      0.000      0.002      0.002        51.
 MEDIAN                     0.005      0.001      0.004      0.003       269.
 90TH PERCENTILE            0.015      0.002      0.004      0.004      3840.
 MAXIMUM                    0.080      0.002      0.004      0.004     73000.
 DATE OF MAXIMUM       1981-10-22 1980-10-22 1980-07-22 1980-07-22 1979-04-25
 STANDARD DEVIATION         0.023      0.001      0.001      0.001     13162.





                             FAEC         Cd         Cd         Ba         Ba
                            STREP      TOTAL       DISS      TOTAL       DISS
                            36102      48001      48101      56001      56101
                         No/100ml    mg/L Cd    mg/L Cd    mg/L Ba    mg/L Ba


 NO. OF L-FLAGGED VALUES        2          2         10          1          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32          9          1         10          9
 MEAN                       1126.      0.000      0.001        0.1        0.1
 MINIMUM                       4.      0.000      0.000        0.1        0.1
 DATE OF MINIMUM       1981-01-15 1979-08-16 1980-01-24 1979-02-07 1979-02-07
 10TH PERCENTILE              12.      0.000      0.000        0.1        0.1
 MEDIAN                      139.      0.000      0.001        0.1        0.1
 90TH PERCENTILE            2680.      0.001      0.002        0.2        0.1
 MAXIMUM                   15000.      0.002      0.002        0.3        0.2
 DATE OF MAXIMUM       1979-04-25 1979-02-07 1979-08-16 1980-04-23 1979-10-17
 STANDARD DEVIATION         2851.      0.001      0.001        0.1        0.0




                               Ba         Hg         Pb         Pb       INST
                            TOTAL       DISS      TOTAL       DISS     DISCHG
                            80016      80111      82001      82101      97160
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        1          2          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          9         11         10         44
 MEAN                       0.255      0.109      0.006      0.001       68.5
 MINIMUM                    0.100      0.000      0.003      0.000        0.3
 DATE OF MINIMUM       1979-02-07 1979-10-17 1979-10-17 1979-08-16 1980-09-17
 10TH PERCENTILE            0.100      0.000      0.003      0.000        2.0
 MEDIAN                     0.200      0.100      0.005      0.002       28.7
 90TH PERCENTILE            0.390      0.280      0.011      0.003      204.8
 MAXIMUM                    0.800      0.300      0.012      0.003      331.3
 DATE OF MAXIMUM       1980-04-23 1980-10-22 1981-01-15 1980-10-22 1981-07-15
 STANDARD DEVIATION         0.207      0.104      0.003      0.001       85.7





 STATION - SACRAMENTO RIVER                         STATION NO. 028011
 COUNTRY - UNITED STATES                            DEPTH(M)       5.8
 LOCATION - OCT. 1  LAT. 38/27/20  LONG. 121/30/07  ELEVATION(M)   1.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-24 TO 1981-12-30

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC   ORG CARB     N KJEL     NO3NO2
                             COND                  DISS                      
                            02041      06001      06101      07004      07105
                            us/cm     mg/L C     mg/L C     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       30         20          1         28         30
 MEAN                        149.         2.        2.5        0.6       0.16
 MINIMUM                      64.         1.                   0.1       0.04
 DATE OF MINIMUM       1980-01-17 1979-06-12            1979-08-23 1980-08-20
 10TH PERCENTILE             111.         1.                   0.2       0.06
 MEDIAN                      142.         2.                   0.6       0.15
 90TH PERCENTILE             196.         3.                   0.8       0.25
 MAXIMUM                     237.         5.                   1.3       0.40
 DATE OF MAXIMUM       1981-09-23 1980-03-19            1981-01-14 1979-04-09
 STANDARD DEVIATION           38.         1.                   0.3       0.09




                            NO2-N         O2          F        ALK         Mg
                                        DISS       DISS      TOTAL       DISS
                            07207      08102      09104      10121      12102
                           mg/L N    mg/L O2     mg/L F      MEQ/L    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        1         30         30         30         30
 MEAN                        0.01        9.4        0.1      57.67         6.
 MINIMUM                                 7.7        0.0      28.00         2.
 DATE OF MINIMUM                  1981-09-23 1980-02-27 1980-01-17 1980-01-17
 10TH PERCENTILE                         7.8        0.1      42.00         4.
 MEDIAN                                  9.4        0.1      57.00         6.
 90TH PERCENTILE                        11.0        0.1      72.00         7.
 MAXIMUM                                11.3        0.2      94.00        11.
 DATE OF MAXIMUM                  1980-01-17 1980-08-20 1981-09-23 1981-09-23
 STANDARD DEVIATION                      1.2        0.0      13.95         2.




                               Cl     ALDRIN     ENDRIN   DIELDRIN         Ca
                             DISS                                        DISS
                            17203      18130      18140      18150      20103
                          mg/L Cl       ug/L       ug/L       ug/L    mg/L Ca


 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          7          7          7         30
 MEAN                          6.      0.000      0.000      0.000     11.540
 MINIMUM                       1.      0.000      0.000      0.000      6.400
 DATE OF MINIMUM       1980-01-17 1979-02-12 1979-02-12 1979-02-12 1980-01-17
 10TH PERCENTILE               3.                                       9.000
 MEDIAN                        6.      0.000      0.000      0.000     11.000
 90TH PERCENTILE               9.                                      14.000
 MAXIMUM                      15.      0.000      0.000      0.000     16.000
 DATE OF MAXIMUM       1981-09-23 1980-08-21 1980-08-21 1980-08-21 1981-09-23
 STANDARD DEVIATION            3.      0.000      0.000      0.000      1.975




                               Cr         Cr         Mn         Mn         Fe
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            24002      24052      25004      25104      26004
                          mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        1          1          0          3          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          9         10          7         10
 MEAN                       0.009      0.001       0.05       0.01       1.90
 MINIMUM                    0.000      0.000       0.02       0.00       0.40
 DATE OF MINIMUM       1979-02-12 1979-02-12 1979-05-15 1979-08-23 1980-11-25
 10TH PERCENTILE            0.000      0.000       0.02       0.00       0.40
 MEDIAN                     0.010      0.000       0.05       0.01       1.40
 90TH PERCENTILE            0.020      0.000       0.08       0.01       4.10
 MAXIMUM                    0.020      0.010       0.12       0.02       5.30
 DATE OF MAXIMUM       1980-08-20 1981-11-30 1981-11-30 1981-11-30 1981-11-30
 STANDARD DEVIATION         0.009      0.003       0.03       0.00       1.63




                               Fe         Ni         Ni         Cu         Cu
                             DISS      TOTAL       DISS      TOTAL       DISS
                            26104      28001      28102      29006      29105
                          mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu


 NO. OF L-FLAGGED VALUES        1          0          1          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          7          6         10          8
 MEAN                        0.04      0.008      0.002      0.012      0.003
 MINIMUM                     0.01      0.002      0.000      0.003      0.002
 DATE OF MINIMUM       1979-08-23 1980-11-25 1980-02-27 1980-05-28 1979-05-15
 10TH PERCENTILE             0.01                            0.003      0.002
 MEDIAN                      0.03      0.007      0.001      0.009      0.003
 90TH PERCENTILE             0.04                            0.016      0.004
 MAXIMUM                     0.12      0.016      0.005      0.050      0.005
 DATE OF MAXIMUM       1981-11-30 1981-11-30 1980-05-28 1980-02-27 1981-11-30
 STANDARD DEVIATION          0.03      0.005      0.002      0.014      0.001




                               As         As   FAEC COL       FAEC         Cd
                            TOTAL       DISS                 STREP      TOTAL
                            33003      33104      36012      36102      48001
                          mg/L As    mg/L As   No/100ml   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          1          0          3
 NO. OF G-FLAGGED VALUES        0          0          1          1          0
 NO. OF UNFLAGGED VALUES       10         10         25         29          7
 MEAN                       0.002      0.002        87.        77.      0.002
 MINIMUM                    0.001      0.001         2.         2.      0.000
 DATE OF MINIMUM       1980-02-27 1979-02-12 1981-11-30 1979-08-23 1980-08-20
 10TH PERCENTILE            0.001      0.001        13.         7.      0.000
 MEDIAN                     0.002      0.001        37.        14.      0.002
 90TH PERCENTILE            0.004      0.003       169.       249.      0.003
 MAXIMUM                    0.004      0.004       819.       499.      0.005
 DATE OF MAXIMUM       1981-08-27 1981-08-27 1981-03-27 1980-01-17 1980-11-25
 STANDARD DEVIATION         0.001      0.001       160.       133.      0.001





                               Cd         Ba         Ba         Ba         Hg
                             DISS      TOTAL       DISS      TOTAL       DISS
                            48101      56001      56101      80016      80111
                          mg/L Cd    mg/L Ba    mg/L Ba    ug/L Hg    ug/L Hg


 NO. OF L-FLAGGED VALUES        5          4          3          3          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        4          6          7          7          7
 MEAN                       0.001        0.1        0.0      1.600      0.060
 MINIMUM                    0.000        0.0        0.0      0.000      0.000
 DATE OF MINIMUM       1979-05-15 1980-05-28 1979-08-23 1981-08-27 1979-11-27
 10TH PERCENTILE                         0.0        0.0      0.000      0.000
 MEDIAN                     0.001        0.1        0.0      0.100      0.050
 90TH PERCENTILE                         0.2        0.1      0.200      0.100
 MAXIMUM                    0.002        0.2        0.1     15.000      0.200
 DATE OF MAXIMUM       1980-02-27 1980-02-27 1979-05-15 1981-11-30 1981-11-30
 STANDARD DEVIATION         0.001        0.1        0.1      4.709      0.070




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


 NO. OF L-FLAGGED VALUES        0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       10          9        491
 MEAN                       0.015      0.001      785.9
 MINIMUM                    0.004      0.000       25.4
 DATE OF MINIMUM       1980-08-20 1979-05-15 1981-05-06
 10TH PERCENTILE            0.004      0.000      300.5
 MEDIAN                     0.007      0.000      489.9
 90TH PERCENTILE            0.051      0.003     2043.8
 MAXIMUM                    0.053      0.006     2783.9
 DATE OF MAXIMUM       1979-05-15 1980-02-27 1981-12-22
 STANDARD DEVIATION         0.019      0.002      656.4





 STATION - ARKANSAS RIVER                           STATION NO. 028012
 COUNTRY - UNITED STATES                            DEPTH(M)       5.3
 LOCATION - OCT. 1  LAT. 34/40/07  LONG. 092/09/18  ELEVATION(M)  70.4
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-12 TO 1981-12-02

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        TOC   ORG CARB     N KJEL     NO3NO2
                             COND                  DISS                      
                            02041      06001      06101      07004      07105
                            us/cm     mg/L C     mg/L C     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       35         20          1         34         34
 MEAN                        610.         5.        5.8        1.0       0.26
 MINIMUM                     257.         0.                   0.2       0.00
 DATE OF MINIMUM       1981-04-30 1980-12-15            1981-12-02 1980-08-29
 10TH PERCENTILE             301.         3.                   0.5       0.01
 MEDIAN                      582.         6.                   1.0       0.26
 90TH PERCENTILE             922.         7.                   1.4       0.45
 MAXIMUM                    1044.         8.                   3.5       0.55
 DATE OF MAXIMUM       1981-12-02 1981-02-10            1981-08-17 1979-12-20
 STANDARD DEVIATION          232.         2.                   0.5       0.17




                               O2          F        ALK         Mg         Cl
                             DISS       DISS      TOTAL       DISS       DISS
                            08102      09104      10121      12102      17203
                          mg/L O2     mg/L F      MEQ/L    mg/L Mg    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       35         35         21         35         35
 MEAN                         9.2        0.2      76.38         7.       116.
 MINIMUM                      6.1        0.1      42.00         4.        32.
 DATE OF MINIMUM       1980-07-22 1979-01-12 1979-02-21 1979-01-12 1981-04-30
 10TH PERCENTILE              6.3        0.1      43.00         4.        48.
 MEDIAN                       8.7        0.2      74.00         7.       110.
 90TH PERCENTILE             12.5        0.3     108.90        11.       190.
 MAXIMUM                     13.9        0.6     140.00        13.       220.
 DATE OF MAXIMUM       1980-02-21 1979-07-19 1979-12-20 1980-09-30 1981-07-22
 STANDARD DEVIATION           2.3        0.1      26.59         3.        54.




                               Ca         Cr         Cr         Mn         Mn
                             DISS      TOTAL       DISS      TOTAL       DISS
                            20103      24002      24052      25004      25104
                          mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          1          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         13         13         13         12
 MEAN                      32.057      0.006      0.002       0.08       0.01
 MINIMUM                   16.000      0.000      0.000       0.04       0.00
 DATE OF MINIMUM       1981-04-30 1979-01-12 1979-01-12 1980-01-15 1980-04-16
 10TH PERCENTILE           18.000      0.000      0.000       0.04       0.00
 MEDIAN                    34.000      0.010      0.000       0.08       0.00
 90TH PERCENTILE           42.500      0.010      0.010       0.11       0.01
 MAXIMUM                   47.000      0.020      0.010       0.14       0.03
 DATE OF MAXIMUM       1980-09-30 1981-06-30 1981-10-09 1980-04-16 1979-01-12
 STANDARD DEVIATION         9.738      0.007      0.004       0.03       0.01



                               Fe         Fe         Ni         Ni         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            26004      26104      28001      28102      29006
                          mg/L Fe    mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          4          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         10         11         11         13
 MEAN                        0.63       0.05      0.004      0.002      0.022
 MINIMUM                     0.18       0.00      0.002      0.000      0.008
 DATE OF MINIMUM       1981-01-14 1981-10-09 1981-07-22 1980-01-15 1981-06-30
 10TH PERCENTILE             0.19       0.00      0.002      0.000      0.008
 MEDIAN                      0.52       0.04      0.004      0.001      0.017
 90TH PERCENTILE             0.93       0.09      0.006      0.005      0.039
 MAXIMUM                     1.90       0.19      0.007      0.006      0.049
 DATE OF MAXIMUM       1980-04-16 1979-04-16 1980-04-16 1980-11-05 1980-06-16
 STANDARD DEVIATION          0.45       0.05      0.001      0.002      0.014




                               Cu         As         As   FAEC COL       FAEC
                             DISS      TOTAL       DISS                 STREP
                            29105      33003      33104      36012      36102
                          mg/L Cu    mg/L As    mg/L As   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       14         13         14         32         32
 MEAN                       0.007      0.002      0.001      1025.       109.
 MINIMUM                    0.000      0.001      0.000        19.         2.
 DATE OF MINIMUM       1980-01-15 1979-01-12 1980-01-15 1981-02-10 1981-01-14
 10TH PERCENTILE            0.001      0.001      0.000        32.         4.
 MEDIAN                     0.004      0.001      0.001       328.        43.
 90TH PERCENTILE            0.013      0.002      0.002      2820.       270.
 MAXIMUM                    0.020      0.004      0.004      6000.       819.
 DATE OF MAXIMUM       1981-10-09 1981-10-09 1981-10-09 1979-07-19 1979-01-12
 STANDARD DEVIATION         0.006      0.001      0.001      1508.       187.




                               Cd         Cd         Ba         Ba         Ba
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            48001      48101      56001      56101      80016
                          mg/L Cd    mg/L Cd    mg/L Ba    mg/L Ba    ug/L Hg


 NO. OF L-FLAGGED VALUES        2         11          1          1          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          3         12         13         10
 MEAN                       0.001      0.001        0.1        0.1      0.069
 MINIMUM                    0.000      0.001        0.0        0.0      0.000
 DATE OF MINIMUM       1980-04-16 1979-10-29 1979-01-12 1979-01-12 1979-10-29
 10TH PERCENTILE            0.000      0.001        0.0        0.0      0.000
 MEDIAN                     0.001      0.001        0.1        0.1      0.100
 90TH PERCENTILE            0.002      0.002        0.2        0.1      0.100
 MAXIMUM                    0.002      0.003        0.3        0.2      0.100
 DATE OF MAXIMUM       1980-06-16 1980-01-15 1979-10-29 1981-06-30 1979-07-19
 STANDARD DEVIATION         0.001      0.001        0.1        0.0      0.048




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


 NO. OF L-FLAGGED VALUES        4          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       10         13         12         34
 MEAN                       0.043      0.014      0.001      610.6
 MINIMUM                    0.000      0.000      0.000       23.3
 DATE OF MINIMUM       1979-10-29 1981-06-30 1979-01-12 1981-04-30
 10TH PERCENTILE            0.000      0.001      0.000       54.2
 MEDIAN                     0.000      0.007      0.000      358.2
 90TH PERCENTILE            0.100      0.023      0.002     1588.2
 MAXIMUM                    0.100      0.063      0.002     2438.4
 DATE OF MAXIMUM       1979-07-19 1979-01-12 1980-11-05 1979-04-16
 STANDARD DEVIATION         0.051      0.016      0.001      629.5





 STATION - DISMAL RIVER                             STATION NO. 028013
 COUNTRY - UNITED STATES                            DEPTH(M)       0.5
 LOCATION - OCT. 1  LAT. 41/46/45  LONG. 100/31/30  ELEVATION(M) 854.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-09 TO 1981-11-20

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC         Li        TOC         CN     N KJEL
                             COND       DISS                                 
                            02041      03101      06001      06606      07004
                            us/cm    mg/L Li     mg/L C    mg/L Cn     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          1          0
 NO. OF UNFLAGGED VALUES       19          6          4          5          6
 MEAN                        174.        0.0         4.      0.002        0.8
 MINIMUM                     165.        0.0         1.      0.000        0.6
 DATE OF MINIMUM       1979-11-20 1979-11-20 1981-09-02 1979-11-20 1980-11-25
 10TH PERCENTILE             165.                                            
 MEDIAN                      173.        0.0         2.      0.000        0.9
 90TH PERCENTILE             179.                                            
 MAXIMUM                     195.        0.0         9.      0.010        0.9
 DATE OF MAXIMUM       1979-05-15 1981-11-20 1981-07-08 1981-11-20 1981-11-20
 STANDARD DEVIATION            7.        0.0         4.      0.004        0.1




                           NO3NO2         O2          F        ALK         Mg
                                        DISS       DISS      TOTAL       DISS
                            07105      08102      09104      10121      12102
                           mg/L N    mg/L O2     mg/L F      MEQ/L    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       15         19         19         11         19
 MEAN                        0.47       10.0        0.3      77.18         3.
 MINIMUM                     0.29        8.2        0.2      69.00         2.
 DATE OF MINIMUM       1981-09-02 1979-09-19 1979-01-09 1979-11-20 1980-01-03
 10TH PERCENTILE             0.30        8.2        0.2      69.40         3.
 MEDIAN                      0.44        9.6        0.3      77.00         3.
 90TH PERCENTILE             0.62       11.6        0.3      81.80         4.
 MAXIMUM                     0.65       12.9        0.5      84.00         4.
 DATE OF MAXIMUM       1979-11-20 1979-01-09 1980-07-29 1979-03-15 1979-05-15
 STANDARD DEVIATION          0.11        1.5        0.1       4.21         0.




                               Cl      MIREX     ALDRIN     ENDRIN   DIELDRIN
                             DISS                                            
                            17203      18125      18130      18140      18150
                          mg/L Cl       ug/L       ug/L       ug/L       ug/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       19          4          3          4          4
 MEAN                          0.      0.000      0.000      0.000      0.000
 MINIMUM                       0.      0.000                 0.000      0.000
 DATE OF MINIMUM       1980-03-25 1979-11-20            1979-11-20 1979-11-20
 10TH PERCENTILE               0.                                            
 MEDIAN                        0.      0.000                 0.000      0.000
 90TH PERCENTILE               1.                                            
 MAXIMUM                       1.      0.000                 0.000      0.000
 DATE OF MAXIMUM       1980-01-03 1981-11-20            1981-11-20 1981-11-20
 STANDARD DEVIATION            1.      0.000                 0.000      0.000



                               Ca         Cr         Cr         Mn         Mn
                             DISS      TOTAL       DISS      TOTAL       DISS
                            20103      24002      24052      25004      25104
                          mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          2          1          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19          5          5          7          4
 MEAN                      22.000      0.006      0.001       0.06       0.00
 MINIMUM                   21.000      0.000      0.000       0.02       0.00
 DATE OF MINIMUM       1979-07-17 1979-11-20 1980-05-28 1980-11-25 1979-11-20
 10TH PERCENTILE           21.000                                            
 MEDIAN                    22.000      0.000      0.001       0.06       0.00
 90TH PERCENTILE           23.100                                            
 MAXIMUM                   25.000      0.020      0.002       0.08       0.00
 DATE OF MAXIMUM       1979-03-15 1979-05-15 1980-11-25 1979-05-15 1981-11-20
 STANDARD DEVIATION         1.106      0.008      0.001       0.02       0.00




                               Fe         Fe         Cu         Cu         As
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            26004      26104      29006      29105      33003
                          mg/L Fe    mg/L Fe    mg/L Cu    mg/L Cu    mg/L As


 NO. OF L-FLAGGED VALUES        0          2          0          6          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          4          7          0          6
 MEAN                        1.26       0.01      0.002      0.010      0.006
 MINIMUM                     1.10       0.01      0.001      0.010      0.005
 DATE OF MINIMUM       1979-11-20 1979-11-20 1980-05-28 1979-11-20 1979-05-15
 10TH PERCENTILE                                                             
 MEDIAN                      1.10       0.01      0.002      0.010      0.007
 90TH PERCENTILE                                                             
 MAXIMUM                     1.80       0.02      0.004      0.010      0.007
 DATE OF MAXIMUM       1979-05-15 1981-05-12 1981-11-20 1981-11-20 1981-11-20
 STANDARD DEVIATION          0.26       0.01      0.001      0.000      0.001




                               As   FAEC COL       FAEC         Cd         Cd
                             DISS                 STREP      TOTAL       DISS
                            33104      36012      36102      48001      48101
                          mg/L As   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          2          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5         19         19          5          0
 MEAN                       0.005       129.       205.      0.001      0.001
 MINIMUM                    0.005         3.        35.      0.000      0.001
 DATE OF MINIMUM       1979-11-20 1980-03-25 1981-01-20 1979-11-20 1979-11-20
 10TH PERCENTILE                         13.        46.                      
 MEDIAN                     0.005        64.       129.      0.000      0.001
 90TH PERCENTILE                        281.       392.                      
 MAXIMUM                    0.006       740.       870.      0.002      0.001
 DATE OF MAXIMUM       1981-11-20 1979-07-17 1979-07-17 1979-05-15 1981-11-20
 STANDARD DEVIATION         0.001       173.       200.      0.001      0.000




                               Ba         Ba         Ba         Hg         Pb
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            56001      56101      80016      80111      82001
                          mg/L Ba    mg/L Ba    ug/L Hg    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        2          0          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          5          6          5          7
 MEAN                         0.1        0.0      0.200      0.017      0.004
 MINIMUM                      0.1        0.0      0.100      0.000      0.000
 DATE OF MINIMUM       1979-05-15 1980-05-28 1979-11-20 1979-11-20 1980-05-28
 10TH PERCENTILE                                                             
 MEDIAN                       0.1        0.0      0.100      0.000      0.004
 90TH PERCENTILE                                                             
 MAXIMUM                      0.2        0.1      0.700      0.100      0.008
 DATE OF MAXIMUM       1979-11-20 1979-11-20 1980-11-25 1981-11-20 1980-11-25
 STANDARD DEVIATION           0.0        0.0      0.224      0.041      0.003




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


 NO. OF L-FLAGGED VALUES        1          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        3         20
 MEAN                       0.005        5.5
 MINIMUM                    0.000        5.0
 DATE OF MINIMUM       1980-05-28 1980-07-29
 10TH PERCENTILE