Rhode Island mammals

Muskrat in Rhode Island

Ondatra zibethicus

Native to Rhode Island S5 Secure in Rhode Island

Not listed as nonindigenous in Rhode Island by USGS NAS; native to its Rhode Island 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 Rhode Island, by the numbers

Common in Rhode Island 12th most recorded of 72 mammals logged in Rhode Island

139 occurrence records
130 with iNaturalist photos
Jul 9, 2026 Last seen in Rhode Island

Records from 2000–2026.

139 total records count every Rhode Island occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 133; the monthly chart covers the 132 records with a full observation date.

When to look for the Muskrat in Rhode Island

Most sightings fall in March to June.

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

Monthly Rhode Island records (table)
MonthRecords
January4
February6
March18
April23
May19
June15
July11
August15
September2
October7
November7
December5

Monthly muskrat occurrence records (iNaturalist and GBIF) in Rhode Island, 2000–2026.

Seasonality

Year-round in Rhode Island, with recorded sightings peaking in March–June, with a smaller rise in August.

Occurrence map

Where Muskrat has been recorded in Rhode Island

133 records mapped · zoom and drag to explore

123 Rhode Island records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Lincoln Woods State Park 5
Snake Den State Park 3
Blackstone River 2
Arcadia Management Area 1
One Hundred Acre Cove 1
Blackstone River Valley National Historical Park 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 Rhode Island

CountyRecords
Providence County 48
Bristol County 26
Newport County 22
Washington County 19
Kent County 6
Other localities 18

The complete county distribution, spread across 5 Rhode Island counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Muskrats inhabit Rhode Island’s freshwater ponds, slow streams, and brackish marshes wherever emergent plants provide food and construction material. Trustom Pond and wetlands in Arcadia are strong places to look; Block Island’s ponds and marshes hold suitable habitat as well. A low dome of cut vegetation or a narrow wake heading straight across a cove may reveal one first.

Records occur year-round and rise from March through June. Visit near dawn or dusk, when muskrats are most likely to swim in the open, and look for the narrow, vertically flattened tail, an useful distinction from the broader profile and larger wake of a beaver.

Occurrence data from iNaturalist and GBIF.

Muskrat in other states

Muskrat range map (all states)

More mammals in Rhode Island in the atlas

Data & sources

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