Unsteady Radial Flow in an Unconfined Aquifer | Ground Water
The Theis equations are based on the assumption that the water is released from storage in the aquifer in immediate response to the decline in the water table. In unconfined aquifers, gravity drainage may not be immediate, particularly in fine grained formations and with stratifications of slow yielding materials. When a well is pumped in such formations, a typical time-drawdown [...]