Otters in Minnesota: Where to Look and What Signs to Watch For

River otters are most common in the northern half of the state, particularly around the Boundary Waters Canoe Area, Voyageurs National Park, and the Mississippi River headwaters. They also thrive along the St. Croix River and Lake Superior’s North Shore. Look for them in shallow, slow-moving water with plenty of fish and nearby woody cover.

In Minnesota, otters sightings usually improve when you slow down and match your first stop to where the animal is most likely in the state. Use the state wildlife hub and the route guide to narrow your first area, then check access, weather, and distance before you settle in. A short walk with one clear viewing plan often beats covering too much ground, especially when habitat changes fast from open edges to brush, wetlands, timber, shoreline, or neighborhood cover.

Otters are most active at dawn and dusk, though they can be seen any time of day. Winter is actually a prime season because otters use snow slides and leave clear tracks. In summer, early mornings offer the best odds when otters hunt for fish near the surface.

See our Otters guide for the next step.

Start by searching muddy or snowy banks for five-toed tracks with webbing between the toes. Look for 15-20 foot long mud or snow slides leading into the water. Otter scat is often piled near water and contains fish scales or crayfish parts. A strong fishy smell can also tip you off to a nearby latrine.

See our state animal guide for the next step.

Otters are longer and sleeker, typically 3-4 feet from nose to tail tip. Their bodies are cylindrical and they swim low in the water with only the head visible. Unlike beavers, they don't slap the water, and unlike muskrats, they rarely carry vegetation. Watch for a rapid, sinuous swimming motion that lifts them partially out of the water.

Concentrate on areas with a mix of open water and dense shoreline vegetation. River otters love beaver ponds, marshes, and slow-moving streams with undercut banks. They also use abandoned beaver lodges and hollow logs for resting. In winter, look for open water leads in ice where otters surface to breathe.