Huntington Lake is a reservoir in Fresno County, California on Big Creek, located in the Sierra Nevada at an elevation of 2,120 meters (6955 ft). Several smaller streams also flow into the lake and it receives additional water from the underground tunnels of Southern California Edison's Big Creek hydroelectric project. Water from the lake flows into Big Creek, but some is diverted by underground tunnels to the Eastwood Powerhouse, which discharges into Shaver Lake.