Utah mammals

American Beaver in Utah

Castor canadensis

Native to Utah S4 Apparently Secure in Utah

Not listed as nonindigenous in Utah by USGS NAS; native to its Utah 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.

American Beaver in Utah, by the numbers

Common in Utah 32nd most recorded of 141 mammals logged in Utah

755 occurrence records
636 with iNaturalist photos
Jul 8, 2026 Last seen in Utah

755 total records count every Utah occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 753 records with a full observation date.

When to look for the American Beaver in Utah

Most sightings fall in April to June.

753 Utah occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Utah records (table)
MonthRecords
January22
February16
March53
April151
May109
June109
July88
August75
September58
October32
November21
December19

Monthly american beaver occurrence records (iNaturalist and GBIF) in Utah.

Seasonality

Year-round in Utah, with recorded sightings peaking in April–June.

Occurrence map

Where American Beaver has been recorded in Utah

300 records mapped · zoom and drag to explore

300 Utah records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Grand Staircase-Escalante National Monument 17
Cache National Forest 15
Glen Canyon National Recreation Area 14
Wasatch National Forest 9
Bears Ears National Monument 8
Dinosaur National Monument 8
Uinta National Forest 8
Zion National Park 6

Protected places with the most american beaver 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 Utah

CountyRecords
Salt Lake County 201
Cache County 79
Summit County 77
Utah County 56
Wasatch County 53
Washington County 37
Weber County 35
Garfield County 33
Grand County 31
San Juan County 28
Uintah County 25
Emery County 15
14 other counties 85

The complete county distribution, spread across 26 Utah counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Beavers turn up in 755 Utah records, a strong showing for a water animal in one of the driest states in the country. The heaviest county counts run along the Wasatch Front and the northern mountains, Salt Lake, Cache, and Summit leading, while named clusters reach from Cache and Wasatch National Forests down through the canyon streams of Grand Staircase-Escalante National Monument and Glen Canyon National Recreation Area.

Mountain streams and canyon rivers

A beaver needs permanent, slow water and a winter supply of bark, and Utah delivers both along the streams that drain its high country. Aspen, willow, and cottonwood line those waterways from the Bear River range to the monument country of the south, and records at Currant Creek State Wildlife Area, Bears Ears National Monument, and Dinosaur National Monument show beavers working streams in mountain forest and red-rock desert alike, anywhere a dam can back up a quiet pool.

Built to stay home through winter

Beavers cut and cache branches near the lodge before freeze-up, then feed under the ice all winter without leaving open water. Utah’s counts rise sharply in April and hold through June as ice leaves the mountain streams and fresh cutting and dam work become easy to spot, then ease through autumn. The dam does more than house one family; it floods streamside ground into wetland used by moose, songbirds, trout, and frogs.

Status in Utah

NatureServe ranks the American beaver S4, Apparently Secure, in Utah, and the species is native throughout its Utah range. USGS NAS does not list it as nonindigenous in the state.

Occurrence data from iNaturalist and GBIF.

American Beaver in other states

View all states →

More mammals in Utah 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"