Semi-infinite aquifer with recharge boundary
✓general assumptions for semi-infinite aquifer;
✓image well is single with the rate equal in value but opposite in sign to that of the pumping well;
✓drawdown develops in three stages: unsteady-state, transitional (initial influence of the boundary) and steady-state.
Confined aquifer with one lateral recharge boundary.
a – cross-section; b – plan view.
Laplace transform solution:
This solution is applicable in the following cases:
drawdown is measured from the beginning of the pumping test
drawdown is measured from the beginning of the recovery test
The whole test period including pumping /injection/ and recovery stages is analyzed