where does southern california get most of its water
Water in California The Colorado River originates more than 1,000 miles (1,600 km) from California in the Rocky Mountains of Colorado and Wyoming and forms the state's southeastern border in the Mojave Desert. Unlike the other California watersheds, essentially all of the water flowing in the Colorado originates outside the state. The Colorado is a critical source of irrigation and urban water for southern California, providing between 55 and 65 percent of the total supply.[12]
San Joaquin Valley The San Joaquin Valley /ˌsæn hwɑːˈkiːn/ is the area of the Central Valley of the U.S. state of California that lies south of the Sacramento–San Joaquin River Delta and is drained by the San Joaquin River. It comprises seven Northern California counties—all of Kings County; a majority of Fresno, Merced, Stanislaus counties; segments of Madera and Tulare counties—and a majority of Kern County, in Southern California.[1] Although a majority of the valley is rural, it does contain cities such as Fresno, Bakersfield, Stockton, Modesto, Turlock, Porterville, Visalia, Merced, and Hanford.