Colorado River Provides Highly Reliable Supplies
The Water Authority’s supply portfolio includes high-priority, independent Colorado River supplies negotiated through the landmark 2003 Quantification Settlement Agreement, or QSA. These QSA supplies are the cornerstone of the San Diego region’s long-term water supply strategy. In addition, the Water Authority purchases Colorado River water from the Metropolitan Water District (MWD) of Southern California.
Before 2003, the Water Authority purchased all of its imported water supply from the MWD, which owns and operates the 240-mile long Colorado River Aqueduct. Dependence on a single supplier increased the risk of water shortages.
A Water Gateway
By developing large, independent supplies from the Colorado River, the Water Authority enhanced water reliability and minimized the risk of serious shortages for San Diego. The QSA supplies include a conservation-and-transfer agreement with the Imperial Irrigation District and water conserved by lining portions of the All-American and Coachella canals. The Water Authority receives approximately 280,000 acre-feet annually from these efforts, comprising around half of the San Diego region’s total water supply.
The Water Authority continues to work with water agencies, states and the Bureau of Reclamation on Colorado River issues and water management strategies that would provide the Water Authority additional operational flexibility and benefit the Southwest and Basin states.