Tennessee mammals

American Beaver in Tennessee

Castor canadensis

Native to Tennessee S5 Secure in Tennessee

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

Common in Tennessee 13th most recorded of 86 mammals logged in Tennessee

1,108 occurrence records
615 with iNaturalist photos
Jul 10, 2026 Last seen in Tennessee

1,108 total records count every Tennessee occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,065 records with a full observation date.

When to look for the American Beaver in Tennessee

Most sightings fall in February.

1,065 Tennessee occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Tennessee records (table)
MonthRecords
January154
February295
March143
April126
May56
June64
July39
August26
September28
October29
November58
December47

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

Seasonality

Year-round in Tennessee, with recorded sightings peaking in February.

Occurrence map

Where American Beaver has been recorded in Tennessee

300 records mapped · zoom and drag to explore

300 Tennessee records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Bays Mountain Park Designated State Natural Area 39
Meeman-Shelby Forest Wildlife Management Area 32
Cherokee National Forest 25
Great Smoky Mountains National Park 15
Radnor Lake 12
Land Between the Lakes Other 5
Reelfoot Lake 5
Warriors Path 5

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 Tennessee

CountyRecords
Sumner County 426
Sullivan County 115
Shelby County 76
Davidson County 55
Blount County 51
Hamilton County 48
Knox County 26
Cheatham County 20
Rutherford County 19
Anderson County 15
Carter County 15
Stewart County 13
64 other counties 229

The complete county distribution, spread across 76 Tennessee counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Tennessee’s occurrence record for the American beaver is one of the more thoroughly documented in the state’s mammal atlas, 936 records tracing nearly the full length of the state, from Great Smoky Mountains National Park in the Unakas to the bottomland forests of Chickasaw State Park and State Forest in the far west.

A dam builder from the mountains to the bottoms

A beaver needs standing or slow-moving water and a supply of bark, twigs, and water plants, and Tennessee supplies that from one end of the state to the other. Records run through Cherokee National Forest’s mountain streams, past Radnor Lake State Natural Area’s ponds just south of downtown Nashville, and out to the sloughs and creeks of Pickett State Park and Pogue Creek Canyon on the upper Cumberland Plateau, showing the beaver holds on in slow water whether that water sits in the mountains, the Basin, or the bottoms.

Building a home it doesn’t have to leave

It cuts bark, twigs, and water plants for food, and stores extra branches near its lodge to get through the colder months without leaving open water. The dam it builds to hold that water in place also raises the water table and floods dead trees, turning a stretch of stream into the kind of wetland many other species depend on, a side effect of the beaver simply meeting its own needs.

Status in Tennessee

NatureServe ranks the American beaver S5, Secure, and the species is native to Tennessee. USGS NAS doesn’t list it as nonindigenous in the state.

Occurrence data from iNaturalist and GBIF.

American Beaver in other states

View all states →

More mammals in Tennessee 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"