||Effect of Snowmelt on the Water Quality of Filson Creek and Omaday Lake, Northeastern Minnesota.
Siegel, D. I. ;
||Geological Survey, St. Paul, MN. Water Resources Div.;Environmental Research Lab.-Duluth, MN.
Inorganic sulfates ;
Water pollution ;
Filson Creek ;
Chemical analysis ;
Ground water ;
Surface waters ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Sulfate concentration and pH were determined in surface water, groundwater and precipitation samples collected in the Filson Creek watershed to evaluate the sources of sulfate in Filson Creek. During and immediately after snowmelt, sulfate concentrations in Filson Creek increased from about 2 to 14 mg/l. Concurrently, H(H) ion activity increased from an average of 10 to the -6.6th power to 10 to the -5.5 power. These changes suggest that sulfate acidity is concentrated in the snowpack at snowmelt, which is similar to changes reported in Scandinavia in areas subject to acid precipitation. Mass balance calculations indicate that the sulfate contribution from groundwater during snowmelt was minimal in comparison to that from snow.
||Pub. in Water Resources Research, v17 n1 p238-242 1981.
||Reprint: Effect of Snowmelt on the Water Quality of Filson Creek and Omaday Lake, Northeastern Minnesota,
|PUB Date Free Form
||8H; 68D; 48G
||PC A02/MF A01