Mammal
Mountain Beaver
Aplodontia rufa
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...
Jul
6
1806
Lewis: July 6, 1806
...s are all those we have seen today. killed five deer
and a beaver today. encamped on the creek much sign of beaver in this
extensive bottom.
Jul
7
1806
Clark: July 7, 1806
...Sentinal to examine
the horses after the moon rose. Emence beaver sign.
This extensive vally Surround with covered with snow is extreemly fertile
covered esculent p...
Jul
7
1806
Lewis: July 7, 1806
...en continued up it on the left hand side much appearance of beaver
many dams. bottoms not wide and covered with low willow and grass. halted
to dine at a large beav...
Jul
10
1806
Clark: July 10, 1806
...ull and extensive Vally open
and fertile which we Call the beaver head Vally which is the Indian name
in their language Har na Hap pap Chah. from the No. of those a...
Jul
11
1806
Clark: July 11, 1806
...oint of land on the left Side which the Shoshones
call the beavers head. the wind rose and blew with great violence from the
S W imediately off Some high mountains ...
Jul
12
1806
Clark: July 12, 1806
...r did not join me last night he has
proceeded on down. the beaver was flacking in the river about us all the
last night. this Morning I was detained untill 7 A M ma...
Jul
13
1806
Clark: July 13, 1806
...n the plains and Deer in the river
bottoms. I also observe beaver and Several otter in galletines river as I
passed along. Gibson killed an otter the fur of which w...
Jul
14
1806
Clark: July 14, 1806
...ossing those defferent chanels all of which was damed with
beaver in Such a manner as to render the passage impracticable and after
Swamped as I may Say in this bot...
Jul
15
1806
Clark: July 15, 1806
...h as Cotton & willow in it's bottoms, and
Great numbers of beaver the river also abounds in those animals as far as
I have Seen.
passed the creek and over a high ro...
Jul
17
1806
Clark: July 17, 1806
...N E side is 30 yards wide. I call it Otter
River the other Beaver R below the enterance of this Creek I halted as
usial to let the Horses graze &c. I saw a Single P...
Jul
17
1806
Lewis: July 17, 1806
...ty in the river bottoms The spies returned
having killed 2 beaver and a deer. they reported that they saw no
appearance of Indians.-
Jul
20
1806
Lewis: July 20, 1806
...r birds common to
the country. there is much appearance of beaver on this river, but not any
of otter. from the apparent decent of the country to the North and abov...
Jul
24
1806
Clark: July 24, 1806
...w emenc
number of Deer Elk and buffalow on the banks. Some beaver. I landed on the
Lard Side walked out into the bottom and Killd the fatest Buck I every
Saw, Shie...
Jul
26
1806
Clark: July 26, 1806
...nd Antelopes are plenty and the river is Said
to abound in beaver. it is inhabited by a great number of roveing Indians
of the Crow Nation, the paunch Nation and th...