San Pablo Reservoir, located in Contra Costa, California, serves as a vital water supply source for the region. This earth-type dam, standing at a height of 170 feet and completed in 1920, holds a storage capacity of 43,193 acre-feet and covers a surface area of 854 acres. Fed by San Pablo Creek, the reservoir plays a crucial role in meeting the water needs of the area, with a drainage area of 32.15 square miles.

Managed by a public utility, San Pablo Reservoir is regulated by the California Department of Water Resources (DWR) and undergoes regular inspections and enforcement to ensure its safety and functionality. With a high hazard potential, the dam is rated as satisfactory in condition assessment as of September 2017. In case of emergencies, an Emergency Action Plan (EAP) is in place, with the last revision in January 2018. The reservoir's location in El Sobrante, under the jurisdiction of the state, highlights its significance in water resource management and climate resilience efforts in California.