Big Swamp, located in Clearwater County, Minnesota, is a federal-owned irrigation structure designed by USF&W and completed in 1965. The dam, standing at 15 feet tall and stretching 26,400 feet in length, serves the primary purpose of irrigation, with a storage capacity of 150 acre-feet. Situated along Clearwater Creek, the dam plays a crucial role in water resource management in the region, supporting agricultural activities and ensuring water availability for the surrounding area.

Despite its low hazard potential, Big Swamp has not been rated for its condition assessment, highlighting the need for regular inspections and maintenance to ensure its continued functionality. The dam's proximity to the city of Roland underscores its importance in safeguarding water resources and mitigating potential risks associated with flooding or water scarcity. With a drainage area of 0.46 square miles and a maximum discharge of 500 cubic feet per second, the dam plays a vital role in regulating water flow and supporting the ecological health of the surrounding wetlands.

As a key infrastructure within the Omaha District of the US Army Corps of Engineers, Big Swamp stands as a testament to the collaborative efforts in water resource management in Minnesota. With its earth construction and buttress core type, the dam represents a critical piece of the region's water infrastructure, serving as a reliable source of irrigation water while also contributing to the overall resilience of the local ecosystem.