Aquifer drawdown and variable-stage stream depletion induced by a nearby pumping well

Abstract

A stream depletion phenomenon has been studied for many decades and different analytical models were developed to find the effect of a pumping well on a nearby stream. Most developed models consider a constant stream stage or neglect the variation in stream stage. This is not the case in reality where stream flow and level continuously vary over time. In this paper a new analytical model was developed considering variation in stream flow (i.e. stream stage). The developed model considers the recession of stream flow and its impact on stream depletion and drawdown. A Comparison between the developed solution and the existing ones shows a significant discrepancy when the stream flow varies.