西北角
Lake of the Woods County lies on Minnesota's border with Canada across the Rainy River, which flows northwest along the border to discharge into Lake of the Woods; its northwest border abuts Manitoba. The northern part of the county (the Northwest Angle) is separated from the rest of the county by the lake and thus has no land contact with the rest of the United States, making the Northwest Angle an exclave. Land access to that part of the county is through Manitoba. Access by water or ice routes is possible. The Rapid River flows northeast through the southeastern part of the county to its discharge point into the Rainy River, near the county's northeast corner.