Del Valle, located in Alameda, California, is a state-owned dam designed for flood risk reduction along the Arroyo Valle. Completed in 1968, this earth dam stands at 222 feet tall with a hydraulic height of 194 feet, offering a maximum storage capacity of 77,100 acre-feet. Its primary purpose extends beyond flood control to include irrigation, recreation, and water supply, reflecting its multifaceted role in managing water resources in the region.

Managed by the California Department of Water Resources (DWR) and subject to state regulations, Del Valle has a high hazard potential but is currently assessed as satisfactory in condition. Regular inspections and enforcement ensure the dam's safety, with the last inspection conducted in November 2020. The dam's emergency action plan is up to date, although additional risk management measures may be in place to address potential threats and enhance preparedness.

Del Valle not only serves as a vital infrastructure for flood control but also contributes to the overall water management efforts in the area. With its strategic location and storage capacity, the dam plays a crucial role in safeguarding against floods while providing essential water resources for irrigation, recreation, and other purposes. As climate and water resource enthusiasts, understanding the intricacies of dams like Del Valle highlights the importance of sustainable water management practices in the face of changing environmental conditions.