Thorson Group West, located in Hokah, Minnesota, is a state-owned structure designed by USDA NRCS with a primary purpose of flood risk reduction. Built in 1963, this earth dam stands at 31 feet tall and spans 275 feet in length, with a storage capacity of 20 acre-feet and a drainage area of 0.79 square miles. The dam is situated on the Root River South Fork-TR and falls under the regulatory oversight of the Minnesota Department of Natural Resources - Ecological Water Resources division.

With a significant hazard potential and a satisfactory condition assessment as of May 2015, Thorson Group West is inspected every 4 years to ensure its structural integrity and flood protection capabilities. The dam's spillway, outfitted with uncontrolled outlets, has a width of 50 feet and can handle a maximum discharge of 636 cubic feet per second. Despite its moderate risk rating, the dam has not undergone any significant modifications since its completion and remains a vital component of the flood mitigation infrastructure in Houston County, Minnesota.