Coyote Flat, also known as Coyote Reservoir, is a privately owned dam located in Lassen, California. Built in 1928, this earth dam stands at a height of 52 feet and serves multiple purposes including flood risk reduction, irrigation, and water supply. Situated on Coyote Creek in the city of Pittville, the dam has a storage capacity of 5250 acre-feet and covers a surface area of 293 acres.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Coyote Flat is subject to state regulation, inspection, and enforcement to ensure its structural integrity and operational safety. With a significant hazard potential, the dam has been assessed as satisfactory in condition as of September 2017. Regular inspections are conducted, with the last one taking place in June 2020, to monitor any potential risks and ensure emergency preparedness.

Coyote Flat plays a crucial role in mitigating flood risks in the region and supporting agricultural irrigation and water supply needs. As a key infrastructure in the area, it is closely monitored and maintained to uphold safety standards and protect the surrounding communities and environment from any potential hazards.