Castaic, located in Los Angeles County, California, is a state-regulated dam on Castaic Creek with a primary purpose of water supply. Completed in 1973, this earth-type dam stands at 340 feet in height and has a storage capacity of 323,700 acre-feet. The dam also serves multiple purposes including irrigation and recreation, making it a vital resource for the region.

Despite its significant storage capacity, Castaic Dam has a high hazard potential and a poor condition assessment as of August 2021. The dam's last inspection in October 2021 revealed the need for improvements to ensure its safety and functionality. With the dam being state-regulated and inspected regularly, efforts are likely being made to address any potential risks and enhance the dam's overall condition.

Castaic Dam plays a crucial role in water supply management for the area, and its importance cannot be understated. With ongoing assessments and potential risk management measures in place, the dam continues to be a key asset in maintaining water resources and ensuring the safety of surrounding communities in the face of changing climate conditions.