Unsteady stream depletion from ground water pumping

A solution is obtained for stream flow depletion created by pumping from a well beside a stream. This solution assumes that streambed penetration of t he aquifer and dimensions of the streambed cross section are all relatively small. It also assumes that the streambed is clogged and that a linear rel ationship exists between the outflow seepage through the streambed and the change in piezometric head across the semipervious clogging layer. The solu tion is general enough to include the earlier solutions of Theis, Glover an d Balmer, and Hantush, A solution is also obtained for the drawdown at any point within the aquifer, and it is suggested that this solution might be m atched with experimental field data to obtain estimates for aquifer and str eambed leakage parameters.