Agnew Lake, located in Mono County, California, is a private hydroelectric facility with a primary purpose of generating power. This concrete dam, completed in 1916, stands at a height of 30 feet and has a storage capacity of 810 acre-feet. The dam spans 278 feet in length and is situated on Rush Creek, with a drainage area of 23 square miles.

The dam at Agnew Lake has a high hazard potential and is regulated by both state and federal agencies, including the California Department of Water Resources and the Federal Energy Regulatory Commission. While the condition assessment is not available, regular inspections are conducted to ensure its safety and compliance with regulations. The dam also serves for recreational purposes, offering a surface area of 40 acres for outdoor activities.

With its historical significance and crucial role in energy production and water management, Agnew Lake is a notable structure in the region. Its location near June Lake and its architectural features make it a point of interest for water resource and climate enthusiasts looking to explore the intersection of human ingenuity and natural landscapes.