Status & Trends by Species

Redband Trout


WDFW

Redband Trout is a resident fish species, and has been named as a focal species by subbasin planners in 16 subbasins. Snapshot data are available in 4 subbasins. 12 subbasins have no data available. Redband Trout is not a Federally protected species, though it is listed as a "species of concern" in 15 subbasins. No biological objectives have been set for this focal species in the Columbia River Basin.

Redband trout are recognized as subspecies of rainbow trout. Redband trout find their ideal habitat in clean, cool, relatively small and low gradient streams, but are capable of enduring higher water temperatures (75–80 °F; 24–27 °C) than other trout that may co-habit the same streams. Redband trout spawn from late April through mid-June depending on water temperatures and levels.

For more information: http://www.fisheries.org/units/AFSmontana/SSCpages/redban%20status2.htm

Focal species represent the fish species that the subbasin planners have identified as focal species for the respective subbasin. The biological objectives associated with a focal species were either described in the subbasin plan or were included in state, tribal, or federal recovery/management plans. Biological objectives and current status are linked to their respective reference information; if the reference exists on-line, a link is provided to the original data.

The status and trend information represents the most current data that is available. Data were collected through interviews with biologists and reviews of reports and websites. Each chart is linked to a table of the data, and each datapoint in that table is linked to reference information. The focal species data presented have been reviewed and approved by the respective collectors.

 

Blue Mountain Province

Snake Hells Canyon Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout     Lower Snake River; Magraw Creek  Subbasin Plan Objective :
None
 
Unknown 426 Species of Concern No Data

Columbia Plateau Province

Deschutes Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
1,500-2,500 fish greater than 8 inches per mile, Pelton Dam to Shearers Falls; 750-1000 fish greater than 8 inches per mile below Shearer Falls311
 
No information since 2000 Species of Concern No Data
John Day Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None313
 
Unknown (abundant in most headwater areas) Species of Concern No Data

Intermountain Province

Columbia Upper Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None
 
Fish Collected
2014: 1,236 fish (Big Sheep Creek)280
2013: 502 fish (North Fork Deadman Creek tributaries)281
Not Listed No Data
Spokane Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None
 
Upper Spokane River
1,149 fish > 200 mm (2007) 468

Middle Spokane River
CPUE (eletrofishing) = 15.8 (+8.5) fish/1.85 hours, 0.1 (+0.2) (gill netting) (2007) 469

Abundance (>10 inches)
Lower Spokane River (Peaceful Valley to T.J. Meenach Bridge)
2013: 1,266 fish 276
Upper Spokane River (Washingtn-Idaho Stateline to Donkey Island)
2009: 1,368 fish277
Species of Concern Snapshot

Middle Snake Province

Boise Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None333
 
Stream order and density estimates (fish/m2)
Boise River 427
1 - 0.114
2 - 0.026
3 - 0.012
5 - 0.056
6 - 0.001
Species of Concern No Data
Bruneau Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None335
 
Stream order and density estimates (fish/m2)
Bruneau River 427
1 - 0.381
2 - 0.237
3 - 0.162
4 - 0.007
Species of Concern No Data
Burnt Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None336
 
No specific data are available regarding population numbers Species of Concern No Data
Malheur Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None337
 
Population estimate = 156,200 (+ 23,273), Population densities ranged from 0.005 - 0.730 fish/m2 with a mean density of 0.181354 Species of Concern No Data
Owyhee Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None339
 
Stream order and density estimates (fish/m2)
Owyhee River447
1 - 0.267
2 - 0.149
3 - 0.016
Species of Concern No Data
Payette Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None333
 
Stream order and density estimates (fish/m2)
Payette River427
1 - 0.062
2 - 0.076
3 - 0.046
Species of Concern No Data
Powder Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None341
 
An estimate of redband trout in the subbasin is difficult because limited population studies have been conducted. Most recent information is from 1997 Species of Concern No Data
Snake Lower Middle Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None343
 
Stream order and density estimates (fish/m2)
Snake River Tributaries427
1 - 0.124
2 - 0.168
3 - 0.138
4 - 0.047
Species of Concern Snapshot
Snake Upper Middle Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None343
 
Stream order and density estimates (fish/m2)
Snake River Tributaries 427
1 - 0.124
2 - 0.168
3 - 0.138
4 - 0.047
Species of Concern Snapshot
Weiser Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
None333
 
Stream order and density estimates (fish/m2)
Weiser River427
1 - 0.104
2 - 0.120
3 - 0.070
Species of Concern No Data

Mountain Columbia Province

Kootenai Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Redband Trout       Subbasin Plan Objective :
Two genetically pure conservation populations (Yaak (above Yaak Falls) and the Kootenai)each containing at least 250 adults. Subpopulations should contain at least 50 adults.345
 
0.018 fish/m inthe drainage 454 Species of Concern Snapshot