Fish
Steelhead Trout
Oncorhynchus mykiss
Photo: USFWS, Public domain
Common Names
Salmon Trout
Habitat
Fort Clatsop
Conservation
Secure
First Observed
1805-10-08
Observed At
Clearwater River, near present-day Orofino, Idaho
Sea-run rainbow trout silvery in color. Introduced for sport and commercial fishing. Many native populations threatened.
Recent sightings
Where it’s being seen today
5 research-grade iNaturalist observations between 2017–2025. Most recent: 2025-05-25. Sourced from Terrain360 trail captures, cached locally.
Journal References
15 journal entries mention Steelhead Trout
Jun
16
1805
Great Falls of the Missouri — Joseph Whitehouse: June 16, 1805
...caught & dryed a large quantity of fine fish, which we
call Salmon troute.
Aug
13
1805
Camp Fortunate / Shoshone contact — John Ordway: August 13, 1805
...oon the current more gentle, we had caught a nomber
of fine Trout this Several days passed high clifts of rocks and
fine Springs on S. Side Saw a nomber of large ott...
Aug
14
1805
Camp Fortunate / Shoshone contact — Patrick Gass: August 14, 1805
...hat we
could discover. There are some fish in the river and trout
of a large size, and of the black kind. We went 15 miles and
encamped on the South side where we ha...
Aug
15
1805
Camp Fortunate / Shoshone contact — John Ordway: August 15, 1805
...Mountains, we
passed Several bad rapids, caught a nomber of Trout in the
Eddy below the rapids, now the river more Shallow, passed
high clifts of rocks. & rough knob...
Aug
19
1805
Camp Fortunate, Sacagawea reunites with Cameahwait — John Ordway: August 19, 1805
...ggage & makeing pack saddles &c.
we caught a nomber of fine Trout covred all over with black spots
in Stead of red. in the afternoon the hunters returned to Camp
& h...
Aug
20
1805
Camp Fortunate, Sacagawea reunites with Cameahwait — John Ordway: August 20, 1805
... a verry large beaver, the Indians eat it. a nomber of fine
Trout caught this day. Cap* Lewis went a Short distance down the
River and looked out a place undiscovere...
Aug
22
1805
Camp Fortunate, Sacagawea reunites with Cameahwait — John Ordway: August 22, 1805
...sh drag of willows and caught
520 fine pan fish. 2 kinds of Trout & a kind resembling Suckers,
we divided them with the Indians, gave them a meal of boiled corn
& be...
Aug
24
1805
Camp Fortunate, Sacagawea reunites with Cameahwait — John Ordway: August 24, 1805
... a small shower of rain one of the men caught several
large Trout one of the hunters came to camp had killd nothing.
Aug
27
1805
Lemhi Valley, preparing to cross Bitterroots — Joseph Whitehouse: August 27, 1805
... of fine Trout which would weigh ab!
8 pound Some call them Salmon Trout. others call them real
Salmon, but they are not So redas the large Salmon. the Indian
women are mos...
Sep
9
1805
Travelers' Rest near present-day Lolo, MT — John Ordway: September 9, 1805
... being abundantly watered
on either side by fine, beautiful trout streams." Wheeler.
2 Clark gives the distance traveled as twenty-two miles. Coues locates
the day's...
Oct
26
1805
Celilo Falls and The Dalles portage — John Ordway: October 26, 1805
...ir bot-
toms and repair them, one of the men giged a Sammon Trout in
the River, towards evening the hunters returned to Camp had
killed 5 Deer a goose and a gray Squ...
Nov
12
1805
Columbia estuary, storm-bound, vote on winter camp — John Ordway: November 12, 1805
...ek and got a more com-
fortable Camp, we giged several more Trout in this creek.
1 On the lee side of Point Ellice, and directly across the river from Astoria.
Wheel...
Mar
14
1806
Lewis: March 14, 1806
...safely asserted that the
red Charr and both speceis of the salmon trout remain in season longer in
the fall of the year than the common Salmon; but I have my doubts wheth...
Apr
10
1806
Clark: April 10, 1806
... precure no provisions from those people except four
white Salmon trout. at 10 oClock Sergt. Pryor and Gibson joined us with
Collins who had killed 3 deer. these were all...
Apr
10
1806
Lewis: April 10, 1806
...ld obtain no
provision from those people except four white salmon trout. at ten oclock
Sergt. Pryor and Gibson joined us with Collins who had killed 3 deer.
these were a...