Located in St. Francis, Minnesota, Benson F is a private Fish and Wildlife Pond constructed in 1966 by the USDA NRCS. This earth dam spans 800 feet in length and stands at a height of 10 feet, with a storage capacity of 151 acre-feet. The dam serves the primary purpose of providing habitat for fish and wildlife in the area, with a maximum discharge capacity of 145 cubic feet per second.

Despite being uncontrolled, the spillway of Benson F is designed with a width of 47 feet to manage water flow during peak periods. The dam is classified as having a low hazard potential and a moderate risk assessment. While the condition of the dam is currently not rated, it is important to note that regular inspections and risk management measures are crucial to ensure the safety and functionality of this important water resource. For water resource and climate enthusiasts, Benson F represents a unique ecosystem that plays a vital role in supporting local biodiversity and ecosystem health in the Rum River Offstream watershed.