Cherry Flat, also known as Cherry Flat Reservoir, is a local government-owned water supply structure located in San Jose, California. Built in 1936, this earth dam stands at a height of 60 feet and has a storage capacity of 500 acre-feet. Situated along the Penitencia Creek, the reservoir covers a surface area of 25 acres and serves multiple purposes, including water supply and recreation.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Cherry Flat is regulated, permitted, inspected, and enforced by state authorities. Despite being classified as a high hazard potential structure, the dam is in satisfactory condition as of the last assessment in September 2017. With a primary purpose of providing water supply, Cherry Flat ensures the region has a reliable source of water while also offering recreational opportunities for the community.

With its close proximity to San Jose and its importance in water management for the area, Cherry Flat Reservoir plays a crucial role in ensuring water security and resource management in Santa Clara County. Encompassing the beauty of the surrounding landscape and contributing to the local ecosystem, Cherry Flat stands as a testament to the vital intersection between water resources, infrastructure, and climate resilience in California.