North Dakota mammals

Muskrat in North Dakota

Ondatra zibethicus

Native to North Dakota S5 Secure in North Dakota

Not listed as nonindigenous in North Dakota by USGS NAS; native to its North Dakota range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Muskrat in North Dakota, by the numbers

Common in North Dakota 20th most recorded of 92 mammals logged in North Dakota

137 occurrence records
125 with iNaturalist photos
May 30, 2026 Last seen in North Dakota

Records from 2000–2026.

137 total records count every North Dakota occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 136; the monthly chart covers the 136 records with a full observation date.

When to look for the Muskrat in North Dakota

Most sightings fall in April to May.

136 North Dakota occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly North Dakota records (table)
MonthRecords
January3
February2
March5
April27
May34
June13
July14
August13
September5
October10
November8
December2

Monthly muskrat occurrence records (iNaturalist and GBIF) in North Dakota, 2000–2026.

Seasonality

Year-round in North Dakota, with recorded sightings peaking in April–May.

Occurrence map

Where Muskrat has been recorded in North Dakota

136 records mapped · zoom and drag to explore

136 North Dakota records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Mckenzie Slough 1
Sweetbriar Lake 1

Protected places with the most muskrat sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in North Dakota

CountyRecords
Burleigh County 27
Grand Forks County 12
Stutsman County 11
Cass County 9
Kidder County 9
Bottineau County 9
McHenry County 6
Mercer County 6
Williams County 4
Sargent County 4
Renville County 4
Ward County 4
19 other counties 32

The complete county distribution, spread across 31 North Dakota counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Muskrats inhabit North Dakota’s prairie-pothole wetlands, marshes, slow streams, and lake margins wherever emergent vegetation provides food and cover. J. Clark Salyer and Long Lake national wildlife refuges contain extensive habitat; scan open channels near dawn or dusk for a low-swimming animal and a narrow V-shaped wake.

The records document a widespread wetland mammal but inevitably favor accessible shorelines. Muskrats remain active all year, even beneath winter ice, while above-water reports peak in April and May and again in August.

Occurrence data from iNaturalist and GBIF.

Muskrat in other states

More mammals in North Dakota in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"