Bureau of Reclamation, Washington.
Billy Clapp Lake is formed by Pinto Dam which is part of the Columbia Basin Project. Lands around the 1,010 acre lake are included in a wildlife reserve program. Access is limited. Summer Falls State Park, on the north end of the lake, is open for day use. The Department of Wildlife provides public access and the only boat ramp at the south end. Angling opportunities include yellow perch, crappie, rainbow trout, and walleye. Fishing season year-round. No campground.
Effective immediately, Reclamation will require all boats launching at Lake Berryessa to participate in a seal program to prevent the spread of invasive mussels. All vessels wishing to launch at Lake Berryessa will be inspected. A red quarantine seal will be applied for 30 days during, which the vessel will not be permitted to launch. Vessels that have finished the 30-day quarantine may return to the lake and have the seal removed by authorized staff and will be allowed to launch. For more information on this updated protocol, please view the press release here: https://www.usbr.gov/newsroom/news-release/5031.
20 miles northeast of Ephrata, Washington off WA 28.