Contra Loma is a federally owned water resource located in Contra Costa, California, managed by the Bureau of Reclamation. Completed in 1967, this earth dam stands at a height of 82 feet, with a hydraulic height of 86 feet and a structural height of 107 feet. The dam serves primarily for water supply purposes, with a storage capacity of 2,630 acre-feet and a normal storage level of 2,095 acre-feet.

With a surface area of 81 acres and a drainage area of 1 square mile, Contra Loma regulates the San Joaquin River OS. It has a spillway width of 15 feet and a maximum discharge capacity of 838 cubic feet per second. Despite its high hazard potential, the dam is classified as having a moderate risk level (3) and has not undergone a recent condition assessment. Emergency action plans have been prepared, meeting guidelines and last revised in April 2017.

Enthusiasts interested in water resources and climate will find Contra Loma a fascinating structure, with its historical significance dating back to the late 1960s. Its role in water supply management in the region, coupled with its high hazard potential and moderate risk level, present a unique case study for understanding the complexities of dam infrastructure and emergency preparedness in the face of climate uncertainties. The dam's association with the Bureau of Reclamation underscores its importance in federal water resource management, making it a compelling subject for further exploration and research.