Owner: San Diego Water Authority
Contract value: $140,206,050
The San Vicente Dam Raise is part of the Emergency Storage Project, a system of reservoirs, interconnected pipelines, and pumping stations designed to make water available to the San Diego region in the event of an interruption of imported water deliveries.
San Vicente Dam currently stands at 220 ft and can store up to 90,000 acre feet of water. The dam raise project increases the height of the dam by 117 ft, making it the tallest dam raise in the United States and the dam the tallest of its type in the world. The raised dam stores an additional 152,000 acre feet of water, more than doubling the capacity of the reservoir. In addition to the roller-compacted concrete (RCC) dam raise, the work also includes foundation grouting, drainage features, outlet works, discharge conduits, a downstream control facility, access roads, and abandonment of the existing outlet works facilities.