Lemmert Dam, located in Franklin, Nebraska, was completed in 1972 by Miller & Associates and the USDA NRCS. This earth dam stands at 25 feet high with a structural height of 32 feet, serving primarily for flood risk reduction along Thompson Creek. With a storage capacity of 216.8 acre-feet and a drainage area of 2.78 square miles, Lemmert Dam plays a crucial role in mitigating potential flood hazards in the region.

Owned by the local government and regulated by the Nebraska Department of Natural Resources, Lemmert Dam undergoes regular inspections to ensure its structural integrity. The dam is classified as satisfactory in terms of condition assessment, with the last inspection conducted in April 2018. With a normal storage capacity of 8.1 acre-feet, the dam covers a surface area of 2.6 acres and has a maximum discharge capacity of 343 cubic feet per second. The dam's primary purpose of flood risk reduction underscores its importance in safeguarding the surrounding communities from potential water-related disasters.

As an essential piece of infrastructure in the area, Lemmert Dam plays a vital role in water resource management and climate resilience efforts. With its strategic location in Riverton, Nebraska, the dam not only provides flood protection but also contributes to the overall water management system in the region. Supported by the Natural Resources Conservation Service and meeting state permitting and inspection requirements, Lemmert Dam stands as a testament to effective collaboration between local and federal agencies in ensuring water security and environmental sustainability in the area.