The Sacramento-San Joaquin Delta is 435 miles from South Orange County, but the impact of what happens there is felt as close to home as your shower. The Delta is the heart of the State Water Project. Near Stockton, the Delta is where the tidal forces of the Pacific Ocean meet the outflows of the Sacramento and San Joaquin rivers. Water flows through the Delta before entering a series of reservoirs, pumps and canals that bring water from the Sierras to Southern California.