One Eleven Detention Dam, located in Solomon, Arizona, along the San Simon River, is a gravity dam primarily designed for flood risk reduction. Built in 1968 by the Bureau of Land Management, this federal structure stands 37 feet tall with a hydraulic height of 34 feet and a length of 850 feet. It has a storage capacity of 657.9 acre-feet, with a normal storage level of 448.5 acre-feet, covering a surface area of 42.4 acres and serving a drainage area of 14.8 square miles.

Despite its low hazard potential and fair condition assessment, the dam has not been inspected since July 2009. However, it has an inspection frequency of 5 years and appears to be well-maintained by the Bureau of Land Management. The dam features an uncontrolled spillway with a width of 24 feet, capable of handling a maximum discharge of 1488 cubic feet per second. With a moderate risk assessment rating of 3, there is a need for updated emergency action plans and risk management measures to ensure the safety and functionality of this essential water resource infrastructure.

Overall, One Eleven Detention Dam plays a vital role in protecting the surrounding areas from flood risks, showcasing a successful collaboration between federal agencies and the local community. As climate change continues to impact water resources, it is crucial to prioritize the maintenance and inspection of such structures to mitigate potential hazards and ensure the sustainable management of water infrastructure for future generations.