Introduction to Ground-water Hydrology

altitude analysis Aquiclude Aquifer Boundaries aquifer tests aquifer-test data artesian aquifers barometric Bedrock chemical clay coefficient of permeability cone of depression contour lines County Darcy's law data plot departures depth determine DeWiest discussion distance dolomite drainage density drawdown effect equation evapotranspiration example factors feet Figure flow nets fluctuations Geohydrology geothermal gradient gpd/ft² gravel ground water ground-water discharge ground-water flow ground-water hydrology ground-water levels ground-water studies ho-h hydraulic gradient hydrograph hydrologic units hydrologist impermeable boundary infiltration Jacob method laboratory land surface layers limestone located measurements Nonsteady observation occurs paper provided permeability piezometric piezometric surface porosity precipitation Problem pumping recharge boundary referred River rock units samples sand sandstone Saratoga Saratoga County shale shows springs storage coefficient stream student Survey Water-Supply Paper thickness transmissibility type curve U.S. Geol unconfined aquifer valley values water level Water Resources Research water table water-bearing yield zone of saturation