11 Effects of Well Interference, Boundaries, and Aquifer Anisotropy on Drawdown

Estimates of T, S, and other aquifer parameters can be used to predict the spatial distribution of combined drawdown when multiple wells are pumping. The presence of recharge and impermeable boundaries also influences time‑drawdown responses when a cone of depression reaches the boundary. When aquifer conditions are not isotropic and homogeneous cones of depression are distorted. The effect of each of these conditions on drawdown during pumping tests is examined in this section.