Low intake rates and rising perched water tables hinder ground water recharge in Southwestern Fresno County
Farmlands OF southwestern Fresno County are in great need of ground water recharge. Most irrigation pumping occurs from below a confining layer of diatomaceous clay, 500 to 700 feet below the ground surface. However, a shallow water table is perched on layers of heavy-textured sedimental soils occurring 75 to 100 feet below all the experimental locations. This zone of water is not pumped for irrigation purposes at present because of high salinity.