Billy Clapp Lake is formed by Pinto Dam which is part of the Columbia Basin Project. The lake is encircled by basalt cliffs of varying height and most of the shoreline is steep and rocky. Lands around the six mile, 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. No campground. The Department of Wildlife provides public access and the only boat ramp at the south end.
The vast expanse of water, cattail marshes, potholes, and wetlands offer a wide variety of water-related experiences. The fishing is outstanding, especially for bass, perch, sunfish, and crappie. Rainbow trout are stocked. Fishing season year-round.
Location: 20 mi NE of Ephrata, WA off WA 28