Colorado River Provides Highly Reliable Supplies
The Water Authority’s supply portfolio includes senior-priority, independent conserved Colorado River supplies negotiated through the landmark 2003 Quantification Settlement Agreement, or QSA. These conserved supplies are the cornerstone of the San Diego region’s long-term water supply diversification strategy. In addition, the Water Authority purchases Colorado River water from the Metropolitan Water District of Southern California.
Before 2003, the Water Authority purchased its imported water supply from MWD, which owns and operates the 240-mile-long Colorado River Aqueduct. Implementing the Water Authority’s diversification strategy, rather than relying on a single supplier, has ensured water resiliency for the region.
A Water Gateway
By developing large, independent supplies from the Colorado River, the Water Authority enhanced water reliability. The QSA supplies include 200,000 acre-feet annually through the conserved water transfer agreement with the Imperial Irrigation District and approximately 77,000 acre-feet conserved by concrete lining long stretches of the All-American and Coachella canals. These conserved QSA supplies benefit the San Diego County region while protecting agriculture and the environment.
They also provide an example of collaboration on the river. The Water Authority continues to collaborate with a diverse group of stakeholders on Colorado River issues and water management strategies that would provide flexibility and benefits to the region and the entire basin.