Latest News
Los Vaqueros Marina & Boat Docks Reopen Contra Costa Water District Celebrates Completion of Construction to Expand the Dam at Los Vaqueros Contra Costa Water District Dedicating Dam Friday John Muir Interpretive Center, North Side of Reservoir to Reopen July 14 Activities Planned for July 14 Reopening of John Muir Interpretive Center Dam at Los Vaqueros Reaches New Height Los Vaqueros Watershed To Close Nov. 21 - Dec. 10 Los Vaqueros Marina & Boat Rentals Will Close Oct. 10 Construction Closures on South Side of Reservoir Divers in the Reservoir South Side Trail Closures Starting July 11 CCWD Recognizes Expansion Partners Boaters Need To Stay Away from Dam Area Recreation Opportunities During Expansion North Side of Los Vaqueros Watershed to Close Recreation March 7 CCWD Awards Contract to Relocate Recreation Facilities for Los Vaqueros Reservoir Expansion CCWD Awards Los Vaqueros Dam Expansion Contract
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How dam's height will be increased by 34-feet.
Larger inundation area for reservoir.

CCWD's Expanded Los Vaqueros Reservoir
Ensures High Quality Water,
Reliability & Environmental Protection

Project Summary:

The Contra Costa Water District has expanded its Los Vaqueros Reservoir, with construction finishing up in fall 2012.

The reservoir's capacity grew from 100,000 acre-feet to 160,000 acre-feet. The dam has increased in height by 34 feet, and is now 226-feet high.

The additional water storage will help ensure high-quality water deliveries to customers, reliability during drought and protections for Delta fisheries and the environment. The project cost $120 million.

Have a question? Send us an e-mail or call (925) 688-8010.

Expansion Project Photo Gallery

The Marina, closed for more than a year to be moved to
higher ground, reopened on Monday, Oct. 15, 2012

Dam Dedication and Reopening of
Los Vaqueros' North Side, July 2012

Update on the Expansion Project, March 2012

Update on the Expansion Project, Dec. 2011  

Update on the Expansion Project - Sept. 2011

Protecting animals during construction.

Los Vaqueros History

Los Vaqueros Project Facts