An unconfined aquifer is bounded by two rivers running parallel to each other.
Flow is toward each of the bounding rivers.
A well is pumping at a constant rate in an unconfined aquifer for a long period of time. The well is located at a distance of 150 m from a river. An observation well located 70 m from the well, in the line that marks the shortest distance between the well and the river, registers 1.0 m of drawdown. Calculate the pumping rate. A pumping test was performed on a confined aquifer.