Sanhedrin Ranch, located in Glenn County, California, is a privately owned dam designed for flood risk reduction along the Tr Stony Creek. Completed in 1967, this earth dam stands at a height of 27 feet and has a hydraulic height of 22.1 feet. With a storage capacity of 120 acre-feet, the dam serves multiple purposes including flood risk reduction, irrigation, recreation, and water supply for the region.

Managed by the California Department of Water Resources and the Safety of Dams regulatory agency, Sanhedrin Ranch is regularly inspected to ensure its safety and compliance with state regulations. The dam has a low hazard potential and has been assessed to be in satisfactory condition as of September 2017. In the event of an emergency, the dam does not currently have an Emergency Action Plan (EAP) in place.

Despite its modest size and simple structure, Sanhedrin Ranch plays a crucial role in managing water resources and mitigating flood risks in the area. Water resource and climate enthusiasts will find this dam to be an interesting case study in private ownership and state regulation of critical infrastructure.