Design a water supply well for a pumping rate of 126.2 lps (2,000 gpm) from a con fined aq...

Design a water supply well for a pumping rate of 126.2 lps (2,000 gpm) from a con fined aquifer 122.0 m (400 ft) thick with a hydraulic conductivity of 10.2 m/day (250 gpd/ft2) and a storage coefficient of 0.0003. The base of the aquifer is 610 m (2,000 ft) below the ground surface and the piezometric surface is 100 m (328 ft) below the ground surface. Samples of the aquifer collected while drilling indicate a uniform formation with the following grain sizes.

Compute the drawdown at the well after 1 year of continuous pumping.