Suukjak Sep is a federal-owned dam located in Fort Mc Coy, Wisconsin, along the Squaw Creek. Built in 1961 by Ayers & Assoc., this earth dam stands at a height of 24 feet and spans 400 feet in length. The dam serves a primary purpose of recreation, offering a storage capacity of 315 acre-feet and a surface area of 14 acres for outdoor activities. With a significant hazard potential and a moderate risk assessment rating, Suukjak Sep is closely monitored by the US Army, who also oversees its funding, design, construction, regulation, inspection, and operation.

Despite not being regulated by the state, Suukjak Sep is a key feature in the St. Paul District managed by the US Army. The dam's spillway type is uncontrolled, with a width of 74 feet, capable of handling a maximum discharge of 2000 cubic feet per second. While the condition assessment is currently unavailable, the dam is inspected every 4 years to ensure its safety and functionality. With its location in Monroe County and its close proximity to the city of Fort Mc Coy, Suukjak Sep offers a recreational oasis for water resource and climate enthusiasts to enjoy nature and outdoor activities amidst the scenic surroundings of Squaw Creek.