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Table 1: General Characteristics of North American Rivers ---------- Concentration (mg L-1) ----------
Watershed Area Discharge Runoff TDS TDS(f) TSS TSS(f) Na K Ca Mg Cl SO4 HCO3 SiO2 PO4-P NO3-N
Balsas 0.116 16.3 141 682 11.1 -- -- 33.3 7.6 218.0 20.7 21.9 62.8 317.8 -- 0.20 0.19
Churchill 0.281 38.0 135 92 3.5 -- -- 3.0 1.1 14.1 5.0 1.3 2.9 61.7 3.0 -- --
Colombia 0.669 250.0 374 147 36.6 40 10.0 7.3 1.5 20.7 5.4 3.6 16.5 81.0 10.5 0.03 0.11
Colorado 0.715 0.5 1 703 0.4 200 0.1 95.0 5.0 83.0 24.0 82.0 270.0 135.0 9.3 0.10 0.30
Fraser 0.228 112.0 491 93 10.5 179 20 1.6 0.8 16.0 2.5 0.1 7.6 60.0 4.9 0.05 0.09
Hudson 0.035 17.3 557 100 1.2 85 1.0 -- -- 22.0 4.0 12.0 -- 61.6 -- -- 0.59
Mackenzie 1.745 333.0 191 209 69.5 126 42.0 7.6 1.0 35.6 8.2 7.9 35.4 110.0 3.0 0.04 0.14
Mississippi 3.270 580.0 177 287 166.7 362 210 21.5 3.1 40.7 11.3 25.1 54.1 124.0 7.6 0.20 1.06
Nelson 1.115 110.0 99 281 30.9 -- -- 24.0 2.4 32.6 13.6 30.2 31.4 144.0 2.6 0.05 0.03
Rio Grande 0.670 3.2 5 -- -- 254 0.8 -- -- -- -- -- -- -- -- -- 0.29
St. Lawrence 1.020 337.0 330 183 61.7 12 4.0 11.0 1.8 31.0 4.0 22.0 24.0 87.0 2.4 0.02 0.22
Thelon / Kazan 0.213 43.7 205 24.8 1.08 -- -- 0.7 0.4 4.5 1.0 3.3 1.9 13.0 0.5 -- --
Yukon 0.860 210.0 244 183 38.4 286 60.0 2.6 1.2 31.8 7.2 1.1 22.4 109.0 7.7 0.01 0.12

See footnote for explanation of terms


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GEMS/WATER
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Last updated: 2001-07-30