Dr. Martin T. Auer Michigan Tech Department of Civil & Environmental Engineering Water Supply

Hydrologic Cycle

Hydrograph

H 2 1 E S1S1 S2S2 h1h1 h2h2 h = H - s r1r1 r2r2 For maximum drawdown, s 1 = H and h 1 = 0 s 2 = 0 and h 2 = H r 1 = well radius r 2 = edge of cone of depression A given pumping rate Q in the extraction well (E), yields a drawdown S 1 at a distance r 1 from the well and a drawdown S 2 at a distance r 2.