Lake Wagner Dam

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Lake Wagner Dam, located in Wagner, South Dakota, is a state-owned structure that regulates Choteau Creek tributary. Built in 1938 by the Works Progress Administration (WPA), this earth dam stands at a height of 20 feet and spans 465 feet in length, providing storage of up to 215 acre-feet of water. With a significant hazard potential and a moderate risk assessment rating, the dam is inspected every three years to ensure its structural integrity and safety.

The dam features an uncontrolled spillway with a width of 65 feet, allowing for a maximum discharge of 5,333 cubic feet per second. Although not rated for condition assessment, Lake Wagner Dam serves as a vital water resource infrastructure in Charles Mix County, South Dakota. With its state-regulated status, the dam undergoes regular inspections, permitting, and enforcement by the South Dakota Department of Agriculture and Natural Resources (DANR) to uphold safety standards and mitigate potential risks associated with its operation.

Despite its age, Lake Wagner Dam continues to play a crucial role in water management and flood control in the region. Its historical significance, combined with its modern regulatory oversight, highlights the ongoing commitment to safeguarding water resources and addressing climate challenges in South Dakota. Enthusiasts of water resources and climate resilience can appreciate the intricate design and engineering of this essential infrastructure that contributes to the sustainable management of water resources in the area.