At-A-Glance

Located in California’s hydrologic region, the Upper Santa Ana Valley – Chino is 153,762 acres in size. This Very Low priority basin is home to an estimated 910,806 people (2010 value), which have been at a rate of 27.61.

Upper Santa Ana Valley – Chino is a(n) basin with approximately 1551 wells, of which approximately 164 are water supply wells. Groundwater accounts for approximately 59.9 percent of the basin’s water supply.