Loon Lake Main in California is a captivating destination for water resource and climate enthusiasts. This hydroelectric facility, completed in 1963, boasts a rockfill dam standing at 100 feet tall and holding a maximum storage capacity of 69,309 acre-feet. The dam's primary purpose is hydroelectric generation, with recreational opportunities also available on the 1,450-acre surface area of the lake.

Located in El Dorado County, Loon Lake Main is regulated by state agencies for permitting, inspection, and enforcement, ensuring the safety and compliance of the dam structure. Managed by a public utility, this facility on Gerle Creek is designed by Bechtel and falls under the jurisdiction of the California Department of Water Resources. With a significant hazard potential and moderate risk assessment, emergency action plans are in place to address any potential threats to the surrounding area.

The dam's operations are overseen by the Federal Energy Regulatory Commission, with a spillway type of uncontrolled and a maximum discharge capacity of 15,300 cubic feet per second. Despite its remote location, Loon Lake Main offers a unique blend of hydroelectric power generation, outdoor recreation, and environmental stewardship that make it a fascinating site for water resource and climate enthusiasts to explore and appreciate.