Project Overview

  1. Expansion of Los Vaqueros Reservoir improves Bay Area water supply reliability and water quality while protecting Delta fisheries and providing additional Delta ecosystem benefits

    The proposed project will include a regional intertie (the Transfer-Bethany Pipeline), improved pump stations and pipelines and could increase the reservoir’s capacity up to 275,000 acre-feet. 

    The proposed project builds upon the successful first phase of expansion from 100,000 to 160,000 acre-feet funded by the Contra Costa Water District and completed in 2012.

    Los Vaqueros is one of the projects being evaluated in the context of a broader Bay Area effort to work collaboratively as a region to improve water supply reliability.


    Los Vaqueros Reservoir Expansion Project Fact Sheet (PDF)

    Los Vaqueros Reservoir Expansion Fact Sheet Image Opens in new window

  1. Invitation to Bid - Phase 2 Los Vaqueros Reservoir Expansion Project - Transfer Pipeline Inspection

  2. CWC Increases Potential Funding for WSIP Projects

    On March 16, 2022, the California Water Commission (CWC) has increased the potential funding amounts for the seven projects in the Water Storage Investment Program (WSIP). Read on...
  3. Request for Qualifications - Los Vaqueros Expansion Capital Project Management Services

    March 29, 2022 CCWD is seeking qualified consultants to provide project management and technical support during planning, design and construction of the Phase 2 Los Vaqueros Reservoir Expansion Project facilities. View details and the RFQ.
  4. Los Vaqueros Reservoir JPA Inaugural Meeting

    November 12, 2021 The eight agencies making up the Los Vaqueros Reservoir JPA met for the first time on Wednesday, November 10, and selected a Chair and Vice-Chair for a one-year term. Read the news release.
  5. California Water Commission Determines Continued Eligibility of the Project

    October 20, 2021 The California Water Commission unanimously voted that the Los Vaqueros Reservoir Expansion Project met all Water Storage Investment Program requirements and remains eligible for Proposition 1 funding. Read on...
  6. Los Vaqueros Reservoir Joint Powers Authority Formed

    October 7, 2021 The Los Vaqueros Reservoir Expansion Project passed a significant milestone today in officially filing agreements needed to form a Joint Powers Authority. This important milestone brings us one step closer to Project implementation. Read the news release.
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