Lake Berryessa Watershed Partnership


Lake Berryessa provides drinking water for nearly 500,000 people and provides year-round recreation opportunities for tens of thousands of people each year. Lake Berryessa water also serves farmers and businesses downstream. Even the local Budweiser Brewery and Jelly Belly factory contract for Lake Berryessa water!

To protect this important resource, the Lake Berryessa Watershed Partnership formed in the early 1990s. Facilitated by Solano RCD, the partnership is a voluntary group of agency representatives, local non-profit organizations and private citizens who work together to educate boaters, campers, day visitors and other lake users about the importance of water quality and good personal stewardship practices.

We work to achieve this with a three-pronged approach:

1. Summer Boater and Visitor Education Program: Every summer, seasonal interns provide person-to-person water quality stewardship education to boaters and shore visitors at locations all around the lake.

    Highlights of this program include:

    • Engine fluid pollution prevention through a free oil-absorbing bilge pad dispersal and exchange project;
    • Our larger-than-life mascot, Bilgee, the Protector of Clean Waterways who regularly visits sites around the lake.
    • Visitor information and stewardship tips in our free Lake Berryessa Map and Brochure and on kiosks located around the lake.

WED 2014 Group for web2. Hands-on education and restoration events: The partnership sponsors annual lake clean-up events to support World Environment Day in June and Coastal Clean-up day in September. These events focus on clean-up activities at specific lake sites, and are usually combined with post event celebratory picnics or BBQs.

3. Regular planning and strategizing meetings: The partnership sponsors quarterly meetings for stakeholders to plan program activities, refine program goals and strategize program funding.


Ways to get involved at Lake Berryessa

Lake Berryessa Watershed Partnership Meetings

Meets Quarterly

Contact Coordinator Marianne Butler for more information


World Environment Day:

Each year, we hold a cleanup at the lake on the 1st Sunday in June to celebrate this international day of environmental stewardship.  Each year, volunteers come to Lake Berryessa to spend a Sunday morning making Lake Berryessa more beautiful and enjoyable for everyone by removing trash and 200 pounds of recyclables from the shoreline.   Join us at this year's event to help get the lake ready for summer. Find out more here.


2019 Coastal Clean-up Event:

Saturday, September 21, 9:00 am to noon

Cleanup sites at Markley Cove, Steele Canyon and under Pope Creek Bridge

Contact Coordinator Marianne Butler for more information

 WED Cleanup crew in green shirts at LB2015 Lake Berryessa World Environment Day cleanup crew

Lake Berryessa Watershed Partnership Members

Solano Resource Conservation District

Solano County Water Agency

      Solano Irrigation District

US Bureau of Reclamation


Lake Berryessa Chamber of Commerce   

Napa County Environmental Management

Solano County Jurisdictions:

Cities of Benicia, Dixon, Fairfield, Rio Vista, Suisun City, Vacaville and Vallejo

Solano County Department of Resource Management

Napa Flood Control & Water Conservation District     River Network      Berryessa Trails

Department of Boating and Waterways   Blue Ridge Berryessa Natural Area

For more information about the Lake Berryessa Watershed Partnership and its programs

Contact Coordinator Marianne Butler at or 567-674-5611






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