Actually under normal conditions there is a lag in the release of the water from the
aquifer. The Theis method makes use of the well function W(u).
W u
ð Þ ¼
Z 1
u
e
Àu
u
du
ð6:15Þ
Fig. 6.19 Diagram illustrating the hydraulics of a nonpressure well
6 Basic Hydrology, Water Resources, and DAF Boat Plant for Lake Restoration
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