North Carolina mammals

American Beaver in North Carolina

Castor canadensis

Native to North Carolina S5 Secure in North Carolina

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

Common in North Carolina 10th most recorded of 125 mammals logged in North Carolina

1,481 occurrence records
1,468 with iNaturalist photos
Jul 5, 2026 Last seen in North Carolina

1,481 total records count every North Carolina occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,476 records with a full observation date.

When to look for the American Beaver in North Carolina

Most sightings fall in January to May.

1,476 North Carolina occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly North Carolina records (table)
MonthRecords
January159
February151
March212
April229
May167
June101
July62
August52
September58
October70
November79
December136

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

Seasonality

Year-round in North Carolina, with recorded sightings peaking in January–May.

Occurrence map

Where American Beaver has been recorded in North Carolina

300 records mapped · zoom and drag to explore

300 North Carolina records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Lower Haw River State Natural Area 23
Eno River State Park 22
William B. Umstead State Park 17
Blue Ridge Parkway 16
Pisgah National Forest 15
Nantahala National Forest 12
Haw River State Park 8
Hanging Rock State Park 7

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 North Carolina

CountyRecords
Wake County 345
Durham County 180
Chatham County 111
Orange County 90
Buncombe County 71
Mecklenburg County 49
Guilford County 35
Watauga County 28
Johnston County 26
Cabarrus County 26
Anson County 24
Catawba County 22
78 other counties 474

The complete county distribution, spread across 90 North Carolina counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

North Carolina’s occurrence databases hold 1,133 American beaver records, one of the highest totals of any mammal covered here. Reports cluster around Pisgah National Forest, Falls Lake, William B. Umstead State Park, and the Great Dismal Swamp, a spread that traces the state’s water more than its terrain.

Three kinds of water, one engineer

A beaver builds a dam wherever slow, food-rich water and dammable banks meet, and North Carolina offers three very different settings for that. In the Blue Ridge, along the streams below Pisgah National Forest and the Blue Ridge Parkway, dams back narrow mountain runs into small ponds. Farther east in the Piedmont, beavers work the coves and inlets of built reservoirs like Falls Lake and the wetlands around William B. Umstead State Park. In the Coastal Plain, the Great Dismal Swamp’s slow blackwater channels and old logging canals give beavers some of the best habitat in the state, with dams and lodges built right into the swamp’s existing waterways.

Food storage built for a North Carolina winter

Beavers cut bark, twigs, and water plants, then stack a cache of branches near the lodge before the coldest stretch of the year sets in. That stockpile matters more in the Blue Ridge’s colder, higher streams than in the milder Piedmont and Coastal Plain, where open water rarely freezes over for long. Records here show up in every month, with reports rising through March and April as beavers become more active and easier to spot after winter.

Status in North Carolina

NatureServe ranks the American beaver S5, secure, and it’s native to North Carolina. Once trapped out of much of the East, beavers have returned to the state’s rivers, reservoirs, and swamps, and their dams now shape wetland habitat from the mountains to the coast.

Occurrence data from iNaturalist and GBIF.

American Beaver in other states

View all states →

More mammals in North Carolina 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"