Status & Trends by Region


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.
 

Middle Snake Province

Boise Subbasin

 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Arrowrock, Anderson Ranch, and Lucky Peak (Within the Boise River Subunit); North Fork Payette, Upper South Fork Payette, Deadwood river, and Squaw Creek (Within the Payette River Subunit); Weiser River (Within the Weiser River Subunit) (All within the Southwest Idaho Recovery Unit)      Draft Recovery Plan Criteria :
500 adults in local populations332
Abundance estimates (all age groups)
Southwest Idaho Recovery Unit
143,356 fish (+95% CI = 64,750) 448
Boise River Subunit
Arrowrock—53,028 fish (+95% CI = 25,725) 448
Anderson Ranch—10,412 fish (+95% CI = 6,504) 448
Lucky Peak—NA 448
Payette River Subunit
Deadwood River—4,007 fish (+95% CI = 4,518) 448
Squaw Creek—17,251 fish (+95% CI = 27,689) 448
Upper South Fork Payette River—21,303 fish (+95% CI = 13,113) 448
Middle Fork Payette River—NA 448
North Fork Payette River—NA 448
Weiser River—NA 448
Threatened Snapshot
Kokanee       Subbasin Plan Objective :
None333
Not available Not Listed No Data
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
Rainbow Trout       Subbasin Plan Objective :
None333
Stream order and density estimates (fish/m2)
Boise River427
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
Bull Trout Jarbidge Distinct Population Segment      Draft Recovery Plan Criteria :
270 - 1,000 adults spawning fish285
50-125 spawners 430 Threatened No Data
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
Mountain Whitefish       Subbasin Plan Objective :
No numeric objective for adult abundance described in the subbasin plan
8,664 fish 427 Not Listed 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
Spring Chinook       Subbasin Plan Objective :
None337
Extirpated Not Listed No Data
Bull Trout Malheur (Within the Malheur River Recovery Unit)      Draft Recovery Plan Criteria :
2,000-3,000 adults distributed between Upper Malheau River and North Fork Malheur River (USFWS)338
Redd Counts
2013: 68 redds107
Threatened Status & Trends
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
Bull Trout Arrowrock, Anderson Ranch, and Lucky Peak (Within the Boise River Subunit); North Fork Payette, Upper South Fork Payette, Deadwood river, and Squaw Creek (Within the Payette River Subunit); Weiser River (Within the Weiser River Subunit) (All within the Southwest Idaho Recovery Unit)      Draft Recovery Plan Criteria :
500 adults in local populations332
Abundance estimates (all age groups)
Southwest Idaho Recovery Unit
143,356 fish (+95% CI = 64,750) 448
Boise River Subunit
Arrowrock—53,028 fish (+95% CI = 25,725) 488
Anderson Ranch—10,412 fish (+95% CI = 6,504) 488
Lucky Peak—NA 488
Payette River Subunit
Deadwood River—4,007 fish (+95% CI = 4,518) 488
Squaw Creek—17,251 fish (+95% CI = 27,689) 488
Upper South Fork Payette River—21,303 fish (+95% CI = 13,113) 488
Middle Fork Payette River—NA 488
North Fork Payette River—NA 448
Weiser River—NA 448
Threatened Snapshot
Kokanee       Subbasin Plan Objective :
None333
Not Available Not Listed No Data
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
Rainbow 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
Bull Trout Powder River (Within the Hells Canyon Complex Recovery Unit)      Draft Recovery Plan Criteria :
5,000 adults in the Recovery Unit (adults abundance requirements not provided for the Powder River Core population)340
Unknown 449 Threatened No Data
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
Bull Trout Pine/Indian/Wildhorse (Within the Hells Canyon Complex Recovery Unit)      Draft Recovery Plan Criteria :
Greater than 500 adults in Indian Creek, Bear Creek, Crooked River Upper Pine Creek (including West Fork Pine, Middle Fork Pine, and East Fork Pine creeks), Clear Creek (including Trail and Meadow creeks), East Pine Creek, and Elk Creek (including Aspen, Big Elk, and Cabin creeks) (Subbasin Plan). 5,000 adults in the Recovery Unit (adult abundance requirements not provided for the Pine/Indian/Wildhorse core population) 450
74 redds in Pine Creek 457 Threatened Status & Trends
Wood River Sculpin       Subbasin Plan Objective :
None343
Approx. 1.36 million fish present throughout the Wood River basin 427 Not Listed No Data
White Sturgeon       Subbasin Plan Objective :
None343
Hells Canyon Reservoir
2002: Estimated abundance (fish > 24 inches) = 3,625451
Oxbow Reservoir
1998: None collected451
Brownlee Reservoir
2001: Estimated abundance (fish > 28 inches) = 155451
Not Listed Snapshot
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
Mountain Whitefish       Subbasin Plan Objective :
None343
Big Wood Drainage
2,876 fish 427
No data exist for other tributary free flowing river reaches or reservoir populations 452
Not Listed Snapshot

Snake Upper Middle Subbasin

 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Pine/Indian/Wildhorse (Within the Hells Canyon Complex Recovery Unit)      Draft Recovery Plan Criteria :
Greater than 500 adults in Indian Creek, Bear Creek, Crooked River Upper Pine Creek (including West Fork Pine, Middle Fork Pine, and East Fork Pine creeks), Clear Creek (including Trail and Meadow creeks), East Pine Creek, and Elk Creek (including Aspen,
74 redds in Pine Creek Threatened No Data
Wood River Sculpin       Subbasin Plan Objective :
None343
Approx. 1.36 million fish present throughout the Wood River basin 427 Not Listed No Data
White Sturgeon       Subbasin Plan Objective :
None396
Upper Salmon Falls Reservoir
2008: Estimated abundance (fish > 28 inches TL) = 346451
Lower Salmon Falls Reservoir
2009: Estimated abundance (fish > 28 inches TL) = 21451
Bliss Reservoir
2004: Estimated abundance (fish > 28 inches TL) = 83451
C.J. Strike Reservoir
2010: Estimated abundance (fish > 28 inches TL) = 4,025451
Not Listed Snapshot
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
Mountain Whitefish       Subbasin Plan Objective :
None343
Big Wood Drainage
2,876 fish 427
No data exist for other tributary free flowing river reaches or reservoir populations 452
Not Listed Snapshot

Weiser Subbasin

 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Arrowrock, Anderson Ranch, and Lucky Peak (Within the Boise River Subunit); North Fork Payette, Upper South Fork Payette, Deadwood river, and Squaw Creek (Within the Payette River Subunit); Weiser River (Within the Weiser River Subunit) (All within the Southwest Idaho Recovery Unit)      Draft Recovery Plan Criteria :
500 adults in local populations332
Abundance estimates (all age groups)
Southwest Idaho Recovery Unit
143,356 fish (+95% CI = 64,750) 448
Boise River Subunit
Arrowrock—53,028 fish (+95% CI = 25,725) 448
Anderson Ranch—10,412 fish (+95% CI = 6,504) 448
Lucky Peak—NA 448
Payette River Subunit
Deadwood River—4,007 fish (+95% CI = 4,518) 448
Squaw Creek—17,251 fish (+95% CI = 27,689) 448
Upper South Fork Payette River—21,303 fish (+95% CI = 13,113) 448
Middle Fork Payette River—NA 448
North Fork Payette River—NA 448
Weiser River—NA 448
Threatened No Data
Kokanee       Subbasin Plan Objective :
None333
Not available Not Listed No Data
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
Rainbow 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