Mmk Dam 1, located in Holt County, Nebraska, is a privately owned structure designed by the USDA NRCS and regulated by the Nebraska Department of Natural Resources. Completed in 1977, this earth dam stands at 31 feet high and stretches 174 feet in length, with a primary purpose of flood risk reduction. With a normal storage capacity of 15 acre-feet and a drainage area of 0.2 square miles, this dam plays a crucial role in managing water resources in the region.

Despite its low hazard potential, Mmk Dam 1 is currently assessed as being in poor condition, with its last inspection conducted in April 2014. The dam has a maximum discharge capacity of 32 cubic feet per second and is equipped with outlet gates for water control. While there are no associated structures with the dam, its location along TR-BEACON CREEK highlights its importance in water management for the area. Climate and water resource enthusiasts will find Mmk Dam 1 to be an intriguing case study in the intersection of infrastructure, regulation, and environmental stewardship.

As a key feature in the water management infrastructure of Holt County, Mmk Dam 1 serves as a vital tool in mitigating flood risks and regulating water flow along the TR-BEACON CREEK. Its design and construction by the USDA NRCS reflect a commitment to sustainable water resource management, while its state-regulated status ensures compliance with safety and environmental standards. With ongoing inspections and maintenance, Mmk Dam 1 continues to play a crucial role in safeguarding the community and surrounding areas from potential water-related hazards.