Warren H. Brock Reservoir Dikes

About Warren H. Brock Reservoir Dikes

The primary purpose of Warren H. Brock Reservoir Dikes is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Bureau Of Reclamation (federal). It impounds the Offstream.

The dam stands 21 feet tall and stretches 17,580 feet across, creates a reservoir covering 410 acres, and has a maximum storage capacity of 8,000 acre-feet. Completed in 2010, the structure is relatively new.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 01/18/2023.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The California dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.