Thief River Falls in Minnesota is a gravity dam that was completed in 1946 for hydroelectric power generation and recreational purposes. Located on the Red Lake River, this dam has a structural height of 25 feet and a length of 193 feet, with a normal storage capacity of 1133 acre-feet and a maximum discharge of 17400 cubic feet per second. The dam is owned and regulated by the Federal Energy Regulatory Commission, with state jurisdiction and permitting from the Minnesota Department of Natural Resources.

Despite being classified as a low hazard potential structure, Thief River Falls has a very high risk assessment rating, highlighting the importance of emergency preparedness and risk management measures. The dam features three Tainter radial gates for water control, with a spillway width of 138 feet. The surrounding area has a surface area of 160 acres and a drainage area of 3450 square miles, providing essential water resources for the region. Overall, Thief River Falls serves as a vital infrastructure for both energy production and water management in Pennington County, Minnesota.

With its historical significance and ongoing role in water resource management, Thief River Falls stands as a key landmark in the local landscape. The dam's multi-arch core type and soil foundation contribute to its stability, while periodic inspections by the Federal Energy Regulatory Commission ensure its continued safe operation. As climate change impacts water availability and extreme weather events become more frequent, the role of Thief River Falls in maintaining a reliable water supply and flood control becomes increasingly important for the community and surrounding areas.