The Otter River is a short connecting stream in Minnesota, flowing from Boulder Lake Reservoir into Island Lake Reservoir. The stream's length is .U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed May 7, 2012 It is within the Cloquet River watershed, north of Duluth.
See also List of rivers of Minnesota
References
External links Minnesota Watersheds USGS Hydrologic Unit Map - State of Minnesota (1974)