Lewandowski Dam, located on the TR.-LITTLE MINNESOTA RIVER in Roberts, South Dakota, is a privately owned structure designed by USDA NRCS and completed in 2006. This earth dam stands at a height of 29 feet, with a storage capacity of 33 acre-feet and a maximum discharge of 325 cubic feet per second. The dam serves a primary purpose of water resource management, with a low hazard potential and a moderate risk assessment rating.

Managed by the South Dakota Department of Environment and Natural Resources (DENR), Lewandowski Dam is regulated, permitted, inspected, and enforced by the state. The dam features an uncontrolled spillway with a width of 24 feet and does not have outlet gates. Despite being in good condition and not rated for condition assessment, the structure's risk management measures and emergency action plan status remain undisclosed. Its location within the Omaha District further underscores its importance in mitigating the impact of climate change on water resources in the region.

Overall, Lewandowski Dam plays a crucial role in water resource management and climate resilience efforts in South Dakota. As a vital structure along the TR.-LITTLE MINNESOTA RIVER, it stands as a testament to the collaboration between private owners, government agencies, and design entities in safeguarding the local community against potential water-related hazards. With its strategic placement and functional design, the dam serves as a valuable asset in regulating water flow, storing essential water resources, and maintaining the ecological balance of the surrounding area.