The San Vicente Dam Raise Project, a roller-compacted concrete (RCC) dam raise performed by AECOM (legacy Shimmick), increased the height of the dam by 117 feet, making it the tallest dam raise in the United States and the tallest dam 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. Work also included foundation grouting, drainage features, outlet works, discharge conduits, a downstream control facility, access roads and abandonment of the existing outlet works facilities.

This project was completed in 2012.