About the Project
The Los Vaqueros Reservoir Expansion Project will increase Bay Area and Central Valley water supply reliability, develop water supplies for wildlife refuges, and improve water quality while protecting Delta fisheries and providing additional Delta ecosystem benefits.
When completed, it will increase the Los Vaqueros Reservoir capacity from 160,000 acre-feet to 275,000 acre-feet and add new and modified conveyance facilities to provide environmental, water supply reliability, operational flexibility, water quality, and recreational benefits.
Water for Wetlands
Reliable water for South of Delta
Water for Communities
Reliable water supply for 11M
High potential for regional water
Anticipated creation of up to
Federal funding from Congress
- Supports wildlife refuges
- Water Infrastructure Improvements for the Nation (WIIN) Act and Bipartisan Infrastructure Law
State funding from the California Water Commission
- Supports wildlife refuges, emergency response, and recreation
Local funding from partner agencies
Supports regional water supply reliability
LV JPA is seeking a low-interest, federal loan*
Total project cost as of September 2023: $1.377B
Since November 2014, inflation has increased construction costs by more than 40%**
* Water Infrastructure Finance and Innovation Act
** Engineering News Record Index
JPA MEMBER AGENCIES
2024 - Phase 2 Expansion
Capacity: 275,000 acre ft.
Dam Heigh: 281 ft.
2012 - Phase 1 Exoansion
Capacity: 160,000 acre ft.
Dam Heigh: 226 ft.
1998 - Original DAM Construction
Capacity: 100,000 acre ft.
Dam Heigh: 192 ft.
July 2018Preliminary California Water Commission (CWC) eligibility and funding decisions
2020-2023Permitting, agreements, and design
February 2020Final Supplement to the Final EIS/EIR
August 2020Final Federal Feasibility Report
October 2021Formation of Joint Powers Authority
2023-2024Final agreements and California Water Commission (CWC) funding award
2025Construction begins on Transfer-Bethany Pipeline
2026Construction begins on Los Vaqueros Dam Expansion
Established in October 2021, the Los Vaqueros Reservoir Joint Powers Authority (JPA) is a unique and diverse regional partnership of eight Member Agencies working to improve water supply reliability for Californians and their environment. The JPA is responsible for the governance and administration of the Los Vaqueros Reservoir Expansion Project.
JPA Members Serving Diverse Beneficiaries
Alameda County Water District
Contra Costa Water District>
City of Brentwood
East Bay Municipal Utility District
Grassland Water District
Santa Clara Valley Water District
San Francisco Public Utilities Commission
Bay Area Water Supply & Conservation Agency (BAWSCA)*
San Luis & Delta-Mendota Water Authority
Zone 7 Water Agency
CONTACT THE JPA
Los Vaqueros Reservoir JPA
1331 Concord Ave., Concord, CA 94520
916-206-5367 | firstname.lastname@example.org