Abstract: This paper analytically considers unsteady flow to a large-diameter well with the well storage in patchy aquifers that is cylindrically composed of two distinctive regions around the well with different hydraulic properties. ...

Abstract: In this study an effective procedure is developed to evaluate the aquifer parameters from the late time-drawdown data observed both at pumping and observation wells in confined aquifers. For this aim, the time-drawdown ...

Abstract: The slope-matching method is used for numerical determination of the confined aquifer parameters. In this study, a new slope-matching method is proposed by using a weighted mean of the slope which is implied drawdown with ...