Sunset is a vital flood risk reduction structure located in Maricopa, Arizona, specifically in the city of Wickenburg. Built in 1977 by the USDA NRCS, this earth dam stands at a height of 32 feet and has a length of 560 feet, providing essential protection to the surrounding area against potential flooding events from the Sunset Wash. With a maximum discharge capacity of 4100 cubic feet per second and a spillway width of 40 feet, Sunset plays a crucial role in managing water flow and mitigating flood risks in the region.

Managed and regulated by the Arizona Department of Water Resources, Sunset has a high hazard potential but is currently in satisfactory condition, as assessed in April 2018. Despite its age, Sunset continues to serve its primary purpose effectively, storing a maximum of 169 acre-feet of water and covering a surface area of 9 acres. With a moderate risk assessment rating of 3, ongoing inspections and maintenance ensure that this structure remains resilient and ready to respond to any potential emergencies. Sunset stands as a testament to effective water resource management and climate resilience efforts in Arizona.