Prairie Portage is a federal water structure located in Minnesota, specifically on the Sucker Chain river system. Managed by the Superior National Forest, this concrete dam serves primarily for recreational purposes, including fish and wildlife pond management, navigation, and recreation. Completed in 1975, Prairie Portage stands at a height of 10 feet and has a storage capacity of 3163 acre-feet, with a normal storage level of 2500 acre-feet.

Despite its low hazard potential, Prairie Portage undergoes regular inspections every 10 years to ensure its structural integrity. With a moderate risk assessment rating of 3, ongoing risk management measures are put in place to mitigate any potential issues. The dam has a spillway type of uncontrolled, and its surrounding area covers a drainage area of 230 square miles. The Prairie Portage structure continues to be a vital resource for water management and recreation in the region, reflecting the dedication of the Forest Service in its operation and maintenance.