Boaters urged to plan ahead for 30-day watercraft quarantine
Lake Berryessa
NAPA, Calif. – The Bureau of Reclamation will adjust operating hours at Lake Berryessa beginning April 20, as part of its seasonal transition. As temperatures rise and visitation increases, Reclamation encourages visitors to plan for updated access hours, boating requirements, and available recreation services.
Starting May 3, 2026
North & South Oak Shores Day Use Area:
- 7:30 a.m. to 5 p.m. - Monday through Friday
- 7:30 a.m. to 7 p.m. - Saturdays and Sundays
Starting May 23, 2026 - Memorial Day Weekend
North & South Oak Shores and Smittle Creek Day Use Area
- 7:30 a.m. to 5 p.m. - Monday through Friday
- 7:30 a.m. to 8 p.m. - Saturday and Sunday
Plan ahead before trailering your vessel
All vessels entering Lake Berryessa must complete a free, 30-day quarantine before launching. Those already in possession of a Lake Berryessa green seal, proof of decontamination, or who plan to use vessels that are neither petroleum powered nor trailered, are exempt from the quarantine. More information on the quarantine, seal installation locations, and decontaminations may be found on the Solano County Water Agency Website: https://scwa2.com/lake-berryessa-mussel-prevention-program/.
| Desired Date of Launch | Last Day to Install a Quarantine Seal* |
| Memorial Day, May 25 | April 24 |
| Juneteenth, June 19 | May 19 |
| Father’s Day, June 21 | May 21 |
| July 4th | June 3 |
| Labor Day, September 7 | August 7 |
*Boaters may schedule a paid decontamination service from designated cleaning locations at Putah Canyon, Pleasure Cove, Markley Cove, and Lake Solano. A decontamination is they only way to launch immediately without going through the 30-day quarantine period.
For additional information about Lake Berryessa visit: Lake Berryessa | Field Offices | CCAO | Area Offices | California-Great Basin | Bureau of Reclamation
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The Bureau of Reclamation is a federal agency under the U.S. Department of the Interior and is the nation's largest wholesale water supplier and second largest producer of hydroelectric power. Our facilities also provide substantial flood control, recreation opportunities,and environmental benefits.
