Oregon’s beaver record count runs well into the thousands, more than 3,450 mapped sightings scattered from the Coast Range to the high desert east of the Cascades. Only a handful tie to named public land, Deschutes National Forest and Mount Hood National Forest among them, because most Oregon beaver records simply follow water, wherever a creek or slough happens to run.
Oregon’s official state animal
The American beaver isn’t just widespread here, it’s Oregon’s official state animal, a nod to the fur trade that shaped the territory’s early economy and gave the state its nickname, the Beaver State. That history doesn’t say anything about how many beavers live in Oregon today, but it explains why so many of the state’s slow-moving waterways carry beaver sign: gnawed stumps, mud-plastered dams, and dome-shaped lodges that any hiker along a quiet creek is likely to run into.
Dam builders on spring-fed desert streams
Beavers cut bark, twigs, and water plants and stack the leftover branches near a lodge to get through the cold months, and central Oregon’s spring-fed streams give them a place to do that even in country that looks too dry for the job. Along the Deschutes and Metolius river systems near Deschutes National Forest, dams turn narrow, cold channels into slow ponds, work that also banks water through Oregon’s dry summers. Records here turn up in every month of the year, with the heaviest tallies landing in spring and again in early fall, more a sign of when people are out along the water than of when beavers themselves are busiest.
Status in Oregon
NatureServe ranks the American beaver S5, secure, in Oregon, and it’s native to the state rather than introduced. It remains the animal most likely to leave a visible mark on an Oregon stream, whether or not anyone ever spots the builder itself.
Full species profile
