Pyramid Lake is an artificial lake formed by Pyramid Dam on Piru Creek, near Castaic, California. The 222,000 m3 (180 acre·ft) reservoir lies on the border between the Angeles National Forest and the Los Padres National Forest in the northwestern portion of Los Angeles County. The 118 m (387 ft) earth and rock dam was built by the California Department of Water Resources and was completed in 1973. Pyramid Lake is part of the California Aqueduct, which is part of the California State Water Project. Downstream is Castaic Lake, which is the terminus of the west branch of the aqueduct. Pyramid and Castaic act as the upper and lower reservoirs for a 1,495 megawatt pumped storage hydroelectric plant. It is the deepest lake in the California Water Project system. Its name comes from the Pyramid Rock, created when a ridge was cut through in 1932 by the Ridge Route Alternate (US 99). Pyramid Rock still exists directly in front of the dam.

Pyramid Lake offers boating, fishing, jet skiing and picnic areas (including 5 unique sites that are accessible only by boat), and courtesy docks.

The best baits for this lake