groundwater recharge decline measured dashed calculations soil methods fluctuation improvement
dashed pathline distribution water groundwater interface
groundwater nets potentiometric hydrogeologic principles flowlines sections
decline groundwater courtesy levels rise multiple years after unl ianr resources natural school
groundwater decline plains aquifer usgs
groundwater sea pumping contributing geophysical
decline curves pressure analyzing combined concepts cartesian drawdown
pumping drawdown graph pump groundwater measuring solinst baseline onthelevel
curve decline figure shale emperical comparison analysis wells