Located in Decatur, Kansas, the Rex Moore Detention Dam is a private earth dam designed by the USDA NRCS and completed in 1971 for the primary purpose of flood risk reduction along the Beaver Creek-TR. Standing at a height of 30 feet with a length of 904 feet, the dam has a storage capacity of 201.47 acre-feet and a maximum discharge rate of 2760 cubic feet per second.

Managed by the Kansas Department of Agriculture, the dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment rating, the dam has not been assessed for its condition but is considered to meet guidelines for emergency action plans. The spillway, with a width of 200 feet, is uncontrolled, and there are no outlet gates or associated structures.

For water resource and climate enthusiasts, the Rex Moore Detention Dam serves as a vital infrastructure for mitigating flood risks in the region. Its strategic location and design, in conjunction with state oversight and management, make it an essential asset for protecting the surrounding area from potential water-related disasters. The dam's historical significance and ongoing role in water management highlight the importance of sustainable infrastructure for adapting to changing climate conditions and enhancing water resource resilience.