Wadi Recharge Evaluation

Abstract

Recharge in arid and semiarid regions is very low because of the paucity of precipitation. The distribution of recharge is both temporally and spatially highly heterogeneous. Most, if not all, of the water that infiltrates soils is subsequently loss to evapotranspiration. Recharge typically occurs predominantly during storm events and primarily occurs in areas in which runoff is concentrated, such as in ephemeral stream channels (i.e., wadis).