Copper Basin, located in San Bernardino, California, is a vital water supply infrastructure managed by a public utility. This arch dam, completed in 1938, stands at a height of 184 feet and has a storage capacity of 22,000 acre-feet. The dam serves the primary purpose of water supply, ensuring the availability of water for the surrounding areas, especially in times of need.

With a drainage area of 8.2 square miles, Copper Basin plays a crucial role in regulating the flow of the Copper Basin river. Despite its high hazard potential, the dam is assessed to be in satisfactory condition, with regular inspections and enforcement measures in place to ensure its safety and functionality. The dam's emergency action plan is up to date, with a last revision in December 2018, indicating preparedness for any unforeseen events.

Situated in Parker Dam, Copper Basin is a key structure in the region, contributing to water resource management and climate resilience. Its strategic location and design make it an essential asset for water supply security in California, highlighting the importance of maintaining and monitoring such critical infrastructure in the face of changing climate conditions.