Geomorphic Evaluation of Erosional Stability at Reclaimed Surface Mines in Northwestern Colorado, Issues 90-4132U.S. Department of the Interior, U.S. Geological Survey, 1991 - Abandoned mined lands reclamation - 67 pages |
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bedrock Blue Ridge region box plot calcium Carter Hall Spring characteristics Clarke County concentrations of dissolved contamination Creek Extension Canal density discharge dolomite drainage basins draining drawdown dye cloud dye traces dye-recovery curve erosion feet Formation fractures ft³/s gal/min geomorphic ground water ground-water flow ground-water system Hardin County HCWD Head of Rough hillslope gradient hydraulic conductivity hydrology indicates karst terrane karst window Kentucky L-31N Canal land surface late postmining leakage limestone measurements median metamorphic rocks mg/L middle aquifer miles MILLIGRAMS PER LITER Mining period Ohio River optical brightener Pirtle Spring potential precipitation premining reach transmissivity recharge reclaimed drainage basins reclaimed hillslopes rill Rough Spring sea level sediment SHENANDOAH Shenandoah River sinkholes Snapper Creek Extension specific conductance SPRING Cco Stiles Spring study area sulfate surface runoff topsoil U.S. Geological Survey unmined hillslopes upper aquifer valley region velocity water levels watershed watershed J11 zone