Research on the Hydrology and Water Quality of Watersheds Subjected to Surface Mining. Phase I: Premining Hydrologic and Water Quality Conditions.
NTIS: PB/80-159510 :35 pages
Five watersheds, ranging in size from 29 to 52 acres, were selected in east-central Ohio to study the hydrologic and water quality conditions occurring before, during, and after surface mining. The average concentrations of the water quality parameters for all watersheds were as low or lower than the Environmental Protection Agency recommended maximum allowable concentrations in drinking water except for suspended solids. Premining ground water systems for each watershed were found to have two major perched aquifers within the top 250 feet. The shallowest ground water is commonly of the calcium bicarbonate type; whereas, water in the deeper aquifers is of variable type. A one-dimensional unsaturated flow model was developed for interfacing with a quasi-three-dimensional ground water model as part of a projected composite hydrologic model.
CP; Final Contract Report;
NTIS Accession No.
U.S. Dept. Agr. & Ohio, Ard Cent