Assume that the stated drawdowns are measured from the static phreatic surface. Also assume that the drawdown curve does not intersect the confined aquifer. Repeat Rob. 4-29 if the aquifer is confined with a thickness of 20 m.
An unconfined aquifer has a static thickness of 75 m. A 20-cm-diameter well is pumped at a constant rate of 10 Us. The drawdown in observation wells located .lo and 50 m from the main well is 4.1 and 1.3 m, respectively.
Determine the coefficients of permeability (1/day/m2) and transmissibility (1/day/m) of the aquifer. What is the drawdown in the pumped well?