Crystal Lake, located in Cameron Park, California, is a privately owned reservoir with a primary purpose of water supply. Completed in 1952, this earth dam stands at a height of 32 feet, with a hydraulic height of 28 feet and a length of 700 feet. The reservoir has a storage capacity of 225 acre-feet and covers a surface area of 12 acres, drawing water from Tr Deer Creek for irrigation, recreation, and water supply.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Crystal Lake is subject to state regulation, inspection, and enforcement to ensure its safety and functionality. The dam has a high hazard potential but was found to be in satisfactory condition during its last assessment in September 2017. Regular inspections and emergency action plans are in place to mitigate risks and respond to any potential threats, with the most recent inspection conducted in January 2021.

As a vital water resource in El Dorado County, Crystal Lake serves as a critical component of the local water supply infrastructure. Enthusiasts of water resources and climate sustainability will find interest in the dam's operational details, maintenance practices, and the collaborative efforts between private ownership and state regulatory agencies to ensure the safe and efficient operation of this essential reservoir.