Construction, Facilities & Operations

Building and operating the infrastructure required to meet the county’s water needs now and into the future requires careful planning. The Water Authority uses a sophisticated approach to cost-effectively build, operate, maintain, and secure its water facilities as an integrated system.

Current San Vicente Dam
In 2014, the Water Authority finished raising the height of the San Vicente Dam by 117 feet, making it the tallest dam raise in the United States and the tallest dam raise of its type in the world. The new dam more than doubles the capacity of San Vicente Reservoir, establishing vital water storage for more than 157,000 acre feet of water to improve the reliability of the region's water supply during dry periods or emergencies that could cut off imported supply sources.

The infrastructure that delivers water to and throughout the San Diego region is a massive network of facilities that addresses all aspects of transporting, treating, and storing water. The Water Authority has looked far into the future to ensure that this system will capably provide long-term demand management, emergency water supply storage, water treatment, and system versatility for generations to come. 

Lake Hodges and Olivenhain Reservoir
Lake Hodges and Olivenhain Reservoir - the Lake Hodges Projects now connect Lake Hodges Reservoir to the Water Authority’s Olivenhain Reservoir and to the Second Aqueduct.

The Water Authority’s Capital Improvement Program, initiated in 1989, coordinates the planning and building of critical water facilities in a thoughtful, visionary fashion to ensure that infrastructure development reflects and addresses the region’s growth and changes.

The Water Authority operates and maintains the San Diego region’s aqueduct delivery system, which consists of approximately 300 miles of large-diameter pipeline in two aqueducts, 1,600 aqueduct-related structures, and over 100 flow-control facilities. These  facilities occupy approximately 1,400 acres within the Water Authority's right of way. The Water Authority works with property owners to ensure they have an understanding of easement improvements or unauthorized encroachments.

The Water Authority is committed to conduct business in an environmentally sensitive manner. The Water Authority, through its environmental program, aims to minimize impacts on the environment from its projects and programs.

The Water Authority also is committed to supporting cost-effective sustainability programs that will benefit the environment and promote thoughtful stewardship of our natural resources.

Twin Oaks Valley Water Treatment Plant
When completed in 2008, the Twin Oaks Valley Water Treatment Plant was the largest submerged membrane water treatment plant in the world and the first treatment plant built by the San Diego County Water Authority.