Palo Verde Irrigation District occupies about 189 square miles of territory in Riverside and Imperial Counties, California.  The District contains approximately 131,298 acres, 26,798 acres of which are on the Palo Verde Mesa.  This Mesa lies just west of, and from 80 to 130 feet higher than, the valley.  A portion of the Mesa area lies within boundaries of the Palo Verde Irrigation District.  Colorado River water, supplied through Palo Verde Irrigation District canals, is lifted onto the Mesa by private pumps to irrigate a portion of the acreage in the District.  The remaining mesa irrigated acreage is irrigated from deep wells developed by the landowners.  The predominant crop on the Mesa is citrus.