Crater Lake, located in Alpine County, California, is a privately owned dam that serves as a water supply for the surrounding area. Built in 1937, this earth dam stands at a height of 36 feet and has a hydraulic height of 28 feet. With a storage capacity of 320 acre-feet, the dam impounds Crater Lake Creek and covers a surface area of 20 acres.

Despite its age, Crater Lake Dam has been well-maintained, with a low hazard potential and a satisfactory condition assessment as of September 2017. The dam is regulated by the California Department of Water Resources (DWR) under the Safety of Dams program, ensuring that it meets all necessary safety standards. The last inspection of the dam was conducted in June 2020, with a regular inspection frequency of once per year.

For water resource and climate enthusiasts, Crater Lake Dam represents a vital piece of infrastructure that plays a key role in providing irrigation and water supply to the local community. Its serene surroundings and important function make it a noteworthy site for those interested in the intersection of water management and environmental conservation in California's diverse landscape.