Search for "California_State_Water_Project" on Wikipedia, Wikimedia Commons, Wiktionary, Wikiquote, Wikibooks, Wikia, Wikitravel, Google (excludes "Wikipedia", adds "water"), Yahoo (excludes "Wikipedia", adds "water"). The California State Water Project, usually just called the State Water Project is a major water diversion project in California which collects water in water-rich northern California and delivers it in southern California.