Mammal

Mountain Beaver

Aplodontia rufa
Mammal Fort Clatsop, near present-day Astoria, Oregon New to Western Science
Mountain Beaver

Photo: Lee Cain, CC BY 4.0

Common Names
Sewellel
Habitat
Fort Clatsop
Conservation
Secure
First Observed
1806-02-26
Observed At
Fort Clatsop, near present-day Astoria, Oregon

Primitive, burrowing rodent that lives among conifers. Seen only once by Corps; Lewis described pelts taken in trade.

Journal References

15 journal entries mention Mountain Beaver

May 19 1805
Seaman Bitten by a Beaver — Nearly Dies
... Montana. Lewis recorded that Seaman was "badly bitten by a beaver" after apparently catching or cornering the animal near the water's edge. The beaver severed an art...
May 28 1805
Missouri River, first view of Rocky Mountains — Joseph Whitehouse: May 28, 1805
... the opposite Shore. we Saw a gang of Elk in this bottom, & beaver Signs [along] the Shores. a large bottom on the S. Side. we found an Indians (?) foot ball floating...
Jul 1 1805
Great Falls Portage — Joseph Whitehouse: July 1, 1805
...w Several Springs along the Shores. one of the men killed a beaver. the pine and ceeder timber pleanty along the Shores. passed clifts of rocks on each Side but the h...
Jul 23 1805
Missouri River above Great Falls, Gates of the Mountains — Joseph Whitehouse: July 23, 1805
...ber con- tinues on the Island [s] and along the Shores, the beaver pleanty. the pine timber continues on the Sides of the hills at Some distance from the River, our h...
Jul 24 1805
Missouri River above Great Falls, Gates of the Mountains — Joseph Whitehouse: July 24, 1805
... on the N. S. the prickley pear abound on it. Saw otter and beaver in great abundence. the willow verry thick on the Islands and along the Shores, the Currents still ...
Aug 6 1805
Jefferson/Beaverhead River near present-day Dillon — Joseph Whitehouse: August 6, 1805
a clear morning. we Set out as usal, and proceeded on hall- ing the canoes up the rapids. the bottoms low and covered with Small...
Aug 6 1805
Jefferson/Beaverhead River near present-day Dillon — John Ordway: August 6, 1805
... it to a pole at the forks. But the pole was green, and the beavers cut it down before Clark's arrival. In ignorance of Lewis' note Clark proceeded, with great diffic...
Aug 6 1805
Jefferson/Beaverhead River near present-day Dillon — Patrick Gass: August 6, 1805
see if the canoes had come up that far, and came upon the north branch about 2 miles above it. Here we discovered that the...
Aug 7 1805
Jefferson/Beaverhead River near present-day Dillon — Joseph Whitehouse: August 7, 1805
a clear cool morning. one man out to hunt. we unloaded one of the Small canoes and halled it out in a grove of cotton...
Aug 7 1805
Jefferson/Beaverhead River near present-day Dillon — Patrick Gass: August 7, 1805
which was fair and clear, and where Capt. Lewis took a meri- dian altitude, which made the latitude of this place 4§ 2 53 north....
Aug 7 1805
Jefferson/Beaverhead River near present-day Dillon — John Ordway: August 7, 1805
one of the Small canoes and hailed it out in the bushes in a grove of cotton timber on L. Side of the forks and...
Aug 8 1805
Jefferson/Beaverhead River near present-day Dillon — Joseph Whitehouse: August 8, 1805
a clear cold morning. 4 hunters Sent out eairly to hunt. we Set out at Sunrise, and proceeded on passed beautiful Smooth prarie on each...
Aug 8 1805
Jefferson/Beaverhead River near present-day Dillon — John Ordway: August 8, 1805
...he prarie is covred with grass which is high in places, the beaver abounds on these Rivers, they have dams and ponds &. C. &. C. in different places, the Soil of thes...
Aug 8 1805
Jefferson/Beaverhead River near present-day Dillon — Patrick Gass: August 8, 1805
...ke did not get the note left at the point, which was that a beaver had cut down and dragged off the pole, on which I had fixed it.
Aug 9 1805
Jefferson/Beaverhead River near present-day Dillon — Joseph Whitehouse: August 9, 1805
...d of it Soon. Some Thunder. the Musquetoes troublesome. the beaver pleanty as usal &c. Saw Snow on the Mountains Some distance a head. pro- ceeded on passed the old b...

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