A new formula for flow into partially penetrating wells in aquifers

Abstract

The relation between drawdown and yield in an aquifer due to pumping from a partially penetrating well is approached experimentally, employing the analogy between the flow of electricity and the flow of fluids through porous media. It is found that, except for a small area near the well, the drawdown curve of a partially penetrating well has the same shape as that of a fully penetrating well. Outside this small area near the well, the two drawdown curves differ by a constant magnitude which can be found from a simple empirical formula obtained from the experimental data.