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Table 2: General Characteristics of South 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
Amazon 6.112 6450 1055 43.5 280.6 186 1200 1.9 0.8 5.4 0.9 2.2 4.5 21.0 6.9 0.02 0.17
Magdalena 0.276 237 859 118.2 28.0 928 220 8.3 1.9 15.0 3.3 13.4 14.4 49.3 12.6 0.12 0.25
Orinoco 1.100 1135 1032 24.8 28.2 132 150 1.5 0.7 2.6 0.7 0.9 2.3 10.0 6.3 0.01 0.08
Parana 2.600 523 201 98.5 51.5 151 79 10.4 2.5 5.4 3.4 14.3 4.1 35.4 23.0 0.07 0.30
Sao Francisco 0.630 90.0 143 65.7 5.9 67 6.0 -- -- 8.0 -- 2.5 2.5 50.6 2.2 -- --
Tocantins 0.750 372 496 -- -- 202 75.0 -- -- -- -- -- -- -- -- 0.003 0.015
Uruguay 0.240 145 443 75.2 10.9 76 11 5.0 2.0 7.0 2.0 3.0 5.0 36.2 15.0 0.02 0.3

See footnote for explanation of terms


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GEMS/WATER
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Last updated: 2002-02-04