Flow to wells in aquifers separated by a semipervious layer
Abstract
Aquifers that are separated by semipervious layers that permit groundwater flow from one aquifer to the other are called leaky aquifers. Many solutions of transient flow problems in such leaky systems have been advanced. These solutions assume, however, that the head distribution in one aquifer is not influenced by discharging or recharging the other aquifer. In many instances such an assumption cannot be made. Consequently, the use of the presently available solutions may yield unreasonable results. Equations for the drawdown distribution that is induced by wells steadily discharging from one or the other, or from both, of two aquifers separated by a semipervious layer are herein developed. Approximate as well as exact solutions are obtained. Computations in the approximate solutions are relatively simple. Computations in the exact solution are, except in a special case solution, laborious if a digital computer is not available.