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Water quality effects of seepage from earthen dams

January 1, 1974

Analyses of surface and seepage waters from selected floodwater retarding structures in west-central Oklahoma, U.S.A. show the salinity of seepage to be several times greater than that of the impounded waters. The increases in concentration of the several chemical components are not proportional. This phenomenon appears to be caused largely by simple solution, which is closely related to the chemical character of the geologic formation that provides the reservoir site and the earth fill of the dam. Concentration of certain chemical components in the seepage water progressively decreases as the structure ages. This is probably a function of depletion, which is related to the amounts and solubility of the parent materials subjected to solution. In contrast, the concentration of certain other components, such as iron and calcium, increases with time. The chemical activities within the accumulating mud on the bottom of the reservoir apparently cause these increases.

Citation Information

Publication Year 1974
Title Water quality effects of seepage from earthen dams
DOI 10.1016/0022-1694(74)90059-6
Authors C. Yost, J.W. Naney
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Hydrology
Index ID 70010061
Record Source USGS Publications Warehouse