Moon Lake, located in Fort Riley, Kansas, is a federally owned dam managed by the US Army for recreational purposes. Completed in 1952, this earth dam stands at a height of 26 feet and has a storage capacity of 60 acre-feet, providing a serene setting for outdoor activities on its 10-acre surface area. The dam, situated on the Tributary of the Kansas River, boasts a spillway width of 50 feet and a maximum discharge capacity of 7600 cubic feet per second.

Despite its low hazard potential, Moon Lake's risk assessment is classified as moderate, indicating the need for ongoing monitoring and management. The dam's condition assessment is currently not available, with the last inspection conducted in June 2019. While Moon Lake does not fall under state jurisdiction for regulation, inspection, or enforcement, the US Army remains responsible for its operation, maintenance, and any necessary emergency preparedness measures. Overall, Moon Lake serves as a valuable recreational resource and a testament to the Army's commitment to both safety and leisure for the community.