Otters in Utah: where to look and what signs to watch for

1. Where are otters most likely in Utah?

Utah's river otters (Lontra canadensis) concentrate along the Green River from Flaming Gorge down to the Colorado confluence, the Colorado River near Moab, and the Price River. I was told by a biologist at the Utah Division of Wildlife Resources that the Uinta Basin holds a strong population. Look for them where beaver ponds and deep pools break up fast currents.

In Utah, 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.

2. When is the best time of day to see otters?

Otters are most active during dawn and dusk, especially in warmer months. In winter they sometimes become more diurnal, so midday can work near open water. I remember a December trip to the Green River where I watched a pair slide across ice right after lunch. Start early, stay late, and sit still.

3. What tracks and signs do otters leave?

Look for five-toed prints with webbing visible in mud or snow. Otter tracks often appear in pairs or groups near water. You'll also see slides: smooth, worn paths down muddy or snowy banks. Scat is oily, dark, and full of fish bones and crayfish shells. Check under bridges and around fallen logs.

See our state animal guide for the next step.

4. What do otter dens look like?

Dens (holts) are usually bank cavities with underwater entrances. Look for piles of grass or reeds stuffed into a hole within a few feet of the waterline. Otters often take over beaver lodges or muskrat burrows. If you see a bank with multiple entrances near a beaver pond, you might be onto a den site.

5. Which Utah rivers have the highest otter populations?

The Green River system: from Flaming Gorge downstream to the Colorado, plus the Yampa and Duchesne tributaries. The Colorado River near Westwater Canyon and Cataract Canyon, and the Price River below Scofield Reservoir. These areas have good fish numbers and remote cover. Check our otter encounters on the Green River page for more details.