Abstract :
THE TRACY PUMPING PLANT, now being completed, is located on the Delta-Mendota Canal near Tracy, Calif. It is one of a series of works to provide an adequate supply of water to the lower San Joaquin Valley from the Sacramento-San Joaquin Delta. At one time a considerable acreage in this area was placed under cultivation by irrigation. Much of this irrigation was from wells which in time lowered the water table, depleted supplies, and in some cases necessitated abandonment of cultivation. Diversion of water by the Friant Dam to the upper San Joaquin has further reduced supplies available to the lower valley.