A. T. Rutledge 1997 The computer model PULSE, described in this report, can be used to construct a hydrograph of ground-water discharge to a stream. The model is applicable to a ground-water flow system that is driven by areally uniform recharge to the water table, and in which ground water discharges to a gaining stream. One of the two formulations used by the model allows for an instantaneous recharge pulse and subsequent ground-water discharge to the stream. The other formulation, which allows for a gradual hydrologic gain or loss term in addition to the instantaneous pulse, can be used to simulate the effects of gradual recharge to the water table, ground-water evapotranspiration, or downward leakage to a deeper aquifer. application/pdf 10.3133/wri974253 en U.S. Dept. of the Interior, U.S. Geological Survey ; Information Services [distributor], Model-estimated ground-water recharge and hydrograph of ground-water discharge to a stream reports