Located in Perkins, South Dakota, the Usa dam stands as a Federal-owned structure along the TR-Grand River. Built in 1950, this Earth-type dam has a height and hydraulic height of 16 feet, with a length of 640 feet. With a storage capacity of 80 acre-feet and a maximum discharge of 2400 cubic feet per second, the Usa dam serves primarily for water resource management and flood control purposes.

Managed by the Natural Resources Conservation Service, the Usa dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While not regulated or inspected by the state, the dam plays a crucial role in maintaining normal storage levels of 62 acre-feet and protecting the surrounding area from potential flood risks. As a key structure in the St. Paul District, the Usa dam contributes to the overall water resource management efforts in the region.

Represented by Dusty Johnson (R), the Usa dam is a vital component of the water infrastructure in South Dakota. While its emergency action plan and risk management measures are not currently assessed, the dam continues to play a significant role in ensuring water security and climate resilience in the area. As water resource and climate enthusiasts, the Usa dam provides valuable insights into the importance of sustainable water management practices in the face of changing climate conditions.