Virginia mammals

American Beaver in Virginia

Castor canadensis

Native to Virginia S5 Secure in Virginia

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

Common in Virginia 9th most recorded of 105 mammals logged in Virginia

2,338 occurrence records
2,288 with iNaturalist photos
Jul 11, 2026 Last seen in Virginia

2,338 total records count every Virginia occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 2,291 records with a full observation date.

When to look for the American Beaver in Virginia

Most sightings fall in March to May.

2,291 Virginia occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Virginia records (table)
MonthRecords
January190
February178
March337
April369
May263
June165
July166
August118
September103
October113
November115
December174

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

Seasonality

Year-round in Virginia, with recorded sightings peaking in March–May.

Occurrence map

Where American Beaver has been recorded in Virginia

300 records mapped · zoom and drag to explore

300 Virginia records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
George Washington Memorial Parkway 47
Mason Neck State Park 17
George Washington National Forest 17
Jefferson National Forest 12
Cumberland State Forest 11
Briery Creek Lake 10
Prince William Forest Park 9
Dragon Run State Forest 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 Virginia

CountyRecords
Fairfax County 556
Westmoreland County 256
Prince William County 107
Albemarle County 86
Prince Edward County 76
Arlington County 71
Loudoun County 70
Chesterfield County 68
Richmond County 65
Spotsylvania County 56
Louisa County 49
Alexandria County 45
94 other counties 833

The complete county distribution, spread across 106 Virginia counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Virginia’s occurrence data holds 1,877 records of the American beaver, one of the densest counts of any mammal in this batch. Reports cluster around Mason Neck National Wildlife Refuge on the tidal Potomac and through the George Washington and Jefferson National Forests in the mountains, a split that says more about where Virginians go looking for beaver sign than about where the animal prefers to live.

From tidal marsh to mountain stream

Beavers need water they can slow down, and Virginia offers two very different kinds. Around Mason Neck, that’s tidal Potomac marsh and the brackish creeks of the Coastal Plain and Tidewater, country that continues south into the Great Dismal Swamp. Around the George Washington and Jefferson National Forests, it’s headwater streams cutting through the Blue Ridge and Appalachian highlands. A dam does the same job in both places: it backs up water deep enough to keep a lodge entrance submerged and out of a predator’s reach.

Bark, twigs, and a winter larder

Diet explains the rest. Beavers cut bark, twigs, and water plants, then stack branches near the lodge as a food cache for the months when ice seals off the pond’s surface. Reports peak in April and May, when high water and new plant growth put beavers on the move and easier to spot. That timing reflects reporting conditions, not a change in how many beavers are out there.

Status in Virginia

State records don’t list the American beaver as nonindigenous, and NatureServe ranks it S5, secure, native to its Virginia range. Few Virginia mammals are equally at home in a tidal marsh and a mountain hollow.

Occurrence data from iNaturalist and GBIF.

American Beaver in other states

View all states →

More mammals in Virginia 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"