Status & Trends by Species

Bull Trout


© E.R. Keeley

Bull Trout is a resident fish species, and has been named as a focal species by subbasin planners in 36 subbasins. Status and trends data are available for this species in 21 subbasins. Snapshot data are available in 5 subbasins. 9 subbasins have no data available. Bull Trout is Federally protected in 35 subbasins. No biological objectives have been set for this focal species in the Columbia River Basin.

Bull trout are members of the char subgroup of the salmon family. Bull trout are well adapted for life in very cold water, and spawn in fall after water temperatures drop below 48 degrees. Adult bull trout prey primarily on other fish.

For more information: http://training.fws.gov/library/Pubs/bulltrt03.pdf

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

Grande Ronde Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Grande Ronde, Little Mrinam    Upper Grande Ronde, Catherine Creek, Minam River/Deer Creek, Lostine River/Deer Creek, Hurricane Creek, Wenaha River, Lookingglass Creek, Little minam River  Draft Recovery Plan Objective :
Grande Ronde Core Area - 5,000 adults distributed among 8 local populations;
Little Minam Core Area - 1000 adults289
 
Redd Counts
2016: 41 redds 142
Threatened Status & Trends
Imnaha Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Imnaha    Imnaha River, Big Sheep Creek, Little Sheep Creek, McCully Creek  Draft Recovery Plan Criteria :
5,000 adults (no delineation among local populations)291
 
Redd Counts
2016: 235 redds141
Threatened Status & Trends
Snake Hells Canyon Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Sheep Creek, Granite Creek    Sheep Creek, Granite Creek  Draft Recovery Plan Criteria :
No numeric objective (abundance estimates considered a research need)290
 
Unknown Threatened No Data

Columbia Cascade Province

Entiat Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Entiat    Mainstem Entiat River, Mad River  Draft Recovery Plan Criteria :
836-1,364 fish294
 
Redd Counts
2013: 26 redds 51
Threatened Status & Trends
Lake Chelan Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout       Draft Recovery Plan Criteria :
None
 
Unknown, further investigation needed 438 Threatened No Data
Methow Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Methow (Within the Upper Columbia River Recovery Unit)    Gold Creek, Twisp River, Chewuch River, Wolf Creek, Early Winters Creek, Upper Methow River, Lost River, Goat Creek  Draft Recovery Plan Criteria :
3,610 - 5,886 fish294
 
Redd Counts
2011: 161 redds 198
Threatened Status & Trends
Okanogan Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout None (Within the Upper Columbia River Recovery Unit    Unknown  Draft Recovery Plan Criteria :
None
 
Redd Counts
2011: 60 redds 201
Threatened Status & Trends
Wenatchee Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Wenatchee (Within the Upper Columbia River Recovery Unit    Chiwawa River, White River, Little Wenatchee River, Nason Creek, Chiwaukum Creek, Peshastin Creek  Draft Recovery Plan Criteria :
1,876 - 3,176 fish294
 
Redd Counts
2011: 225 redds 63
Adult Counts (Tumwater Dam)
2011: 116 adults 63
Counts (Chiwawa River Weir)
2010: 195 fish (all ages)63
Threatened Status & Trends

Columbia Gorge Province

Hood Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Hood River Basin    Clear Branch, Hood River  Draft Recovery Plan Criteria :
> 500 adults, distributed among three or more local populations307
 
Unknown Threatened No Data
Klickitat Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Lower Columbia River Basin  Klickitat River  West Fork Klickitat River  Draft Recovery Plan Criteria :
Maintain population (minimum need); determine recovery criteria309,310
 
Unknown, presumed very low 382, 371 Threatened No Data

Columbia Plateau Province

Deschutes Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Lower Deschutes (Within Deschutes Recovery Unit)    Shitike Creek, Warm Springs River, and 3 Metolius River populations   Draft Recovery Plan Criteria :
1,500-3,000 adults distributed among 5 or more local populations312
 
Redd Counts
2015: 129 redds 158
Adult Counts (Pelton Dam)
2016: 13 adults 207
Threatened Status & Trends
John Day Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout John Day River (Within John Day River Recovery Unit)    North Fork (7 populations), Middle Fork (3 populations), Upper Mainstem (2 populations)  Draft Recovery Plan Criteria :
5,000 individuals distributed among 12 or more local populations312
 
Redd Counts
2005: 154 redds 440
Threatened Status & Trends
Tucannon Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Tucannon (Within Snake River Washington Recovery Unit)      Draft Recovery Plan Criteria :
1,000 adults512
 
Redd Counts
2011: 143 redds 83
Threatened Status & Trends
Umatilla Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Umatilla River (Within Umatilla-Walla Walla Recovery Unit)    North Fork Umatilla, South Fork Umatilla, North Fork Meacham Creek   Draft Recovery Plan Criteria :
500-5,000 adults distributed among three local populations321
 
Redd Counts
2010: 13 redds141
Threatened Status & Trends
Walla Walla Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Walla Walla River(Within Umatilla-Walla Walla Recovery Unit)    Upper Walla Walla, Mill Creek, Touchet River  Draft Recovery Plan Criteria :
3,000-5,000 adults distributed among three or more local populations321
 
Redd Count
2014: 41 redds507
Threatened Status & Trends
Yakima Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Yakima (Within Middle Columbia River Recovery Unit)      Draft Recovery Plan Criteria :
2,550 - 3050 adults287
Subbasin Plan Objective :
None
 
Redd Counts
2011: 760 redds
South Fork Ahtanum - 4 redds 87
Middle Fork Ahtanum - 11 redds 87
Gold Creek - 7 redds 87
Bumping River - 0 redds 87
Crow Creek - 7 redds 87
North Fork Tieton River - 11 redds 87
Kachess River - 33 redds 87
Box Canyon Creek - 31 redds 87
Indian Creek - 147 redds 87
Deep Creek - 19287
American River/Union Creek - 40 redds 87
Ahtanum North Fork/Shellneck Creek - 1 redd87
Teanaway North Fork River/De Roux - 0 redds 87
Rattlesnake Creek/Little Wildcat/Shell Creek - 42 redds 87
Tieton South Fork/Bear Creek - 234 redds 87
Threatened Status & Trends

Intermountain Province

Coeur d'Alene Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Coeur d’Alene Lake (Within the Coeur d’Alene River Recovery Unit)      Subbasin Plan Objective :
St. Joe River — 8 local populations contributing to a total of 800 annual adult spawners (5 local populations with an average of 500 annual adult spawners will occur above and/or in Red Ives Creek and 3 local populations with an average of 300 annual adult spawners will occur from Ives Creek downstream to Big Creek)

Coeur d'Alene River (North Fork Coeur d'Alene drainage) - at least 3 local populations contributing to an average of 300 annual adult spawners)

Total of 1,100 adult spawners per year between the two subunits324
 

Redd Counts
2013: 41 redds
Medicine Creek - 20 redds 266
St. Joe River (Heller to St. Joe Lake) - 1 redd 266
Wisdom Creek - 1 redd 266
Bean Creek - 0 redds266
North Fork Bean Creek - 8 redds266
Mill Creek - 6 redds266
Tinear Creek - 5 redds266
Threatened Status & Trends
Pend Oreille Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Lake Pend Oreille (Within the Clark Fork Recovery Unit—Lower Clark Fork Subunit), Priest Lakes (Within the Clark Fork Recovery Unit— Priest Subunit), Pend Oreille River downstream from Albeni Falls including all tributaries to the Canadian border (Within the Northeast Washington Recovery Unit)       Draft Recovery Plan Criteria :
Lake Pend Oreille
2,500 adults among at least 6 local populations with greater than 100 adults (USFWS 2003 Ch 3)

Priest Lakes
1,000 adults among at least 5 local populations with greater than 100 adults (USFWS 2003 Ch 3)

Pend Oreille River
1,575-2,625 adults (Indian Creek 50-100, Slate Creek 25-75, Mill Creek 50-150, Cedar Creek 150-250, Ruby Creek 100-200), Tacoma Creek 150-350, Calispell Creek 50-100, Sulliva Creek 600-850, and Le Clerc Creek 400-550) (USFWS 2003 Ch 23)327
 

Redd Counts
2015: 530 redds
Lightning Creek - 11 redd501
East Fork Lightning Creek - 17 redds501
Savage Creek - 5 redds 501
Char Creek - 0 redds501
Porcupine Creek - 0 redds501
Wellington Creek - 8 redds501
Rattle Creek - 5 redds501
Johnson Creek - 5 redds501
Morris Creek - 0 redds501
Strong Creek - 0 redds501
Trestle Creek - 117 redds501
Pack River - 14 redds501
Grouse Creek - 48 redds501
Granite Creek - 68 redds501
Sullivan Springs Creek - 0 redds501
North Gold Creek - 41 redds501
South Gold Creek - 69 redds501
West Gold Creek - 3 redds501
Middle Fork East River - 51 redds501
Uleda Creek - 11 redds501
Caribou Creek - 57 redds501
Threatened Status & Trends

Lower Columbia Province

Lewis Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Lewis (Within the Lower Columbia River Recovery Unit)    Cougar Creek, Pine Creek, Rush Creek  Draft Recovery Plan Criteria :
Maintain current distribution, restore distribution to previously occupied areas, and maintain stable or increasing trends in abundance310
 
Population Estimate
2015: 697 fish (Swift Reservoir)479
Threatened Status & Trends
Willamette Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Upper Willamette River, Clackamas River    Mainstem McKenzie River, Trail Bridge, South Fork McKenzie River, and possibly Middle Fork Willamette River (all in Upper Willamette Core Area)  Draft Recovery Plan Criteria :
900-1,500 adults (600-100 in Upper Willamette Core Area; 300-500 in Clackamas Core Area)331
 
Redd Counts
2009: 240 redds 189
Threatened Status & Trends

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
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
Malheur Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
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
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
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
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
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
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

Mountain Columbia Province

Flathead Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Akokala Lake, Arrow Lake, Big Salmon Lake, Bowman Lake, Quartz Lakes, Clearwater River and lakes, Cyclone Lake, Doctor Lake, Flathead Lake, Frozen Lake, Harrison Lake, Holland Lake, Hungry Horse Reservoir, Isabel lakes, Kintla Lake, Lake McDonald, Lincoln Lake, Lindbergh Lake, Logging Lake, Lower Flathear River, Lower Quartz Lake, Swan Lake, Trout Lake, Upper Kintla Lake, Upper Stillwater Lake, Upper Whitefish Lake (Within Clark Fork Recovery Unit)      Draft Recovery Plan Criteria :
Each core area supports at least 5 local populations with 100 or more adults each and contains 1,000 or more adults in total

(biologists suggest the minimum number of populations should be greater)344
 
North Fork Flathead River Core
2015: 207 redds 88
Middle Fork Flathead River Core
2015: 145 redds 88
South Fork Flathead River Core
2011: 319 redds 88
Flathead River Core
2012: 53 redds 88
Swan Lake Core
2015: 451 redds 88
Hungry Horse Reservoir Core
2015: 73 redds 88
Whitefish Lake Core
2015: Swift Creek - 5 redds 88
Upper Whitefish Lake Core
2015: West Fork Swift Creek - 6 redds88
Holland Lake Core
2015: Holland Creek - 18 redd88
Bowman Lake Core
2011: Bowman Creek - 3 redds88
Logging Lake Core
2012: Logging Creek - 1 redd88
Cyclone Lake Core
2012: Cyclone Creek - 4 redds88
Quartz Lake Core
2012: Quartz Creek -36 redds88
Harrison Lake Core
2012: Harrison Creek - 1 redd88
Big Salmon Lake Core
2006: Big Salmon - 53 redds88
Threatened Status & Trends
Kootenai Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Lake Koocanusa, Kootenai River River, Sophie Lake, and Bull Lake (within the Kootenai River Recovery Unit)      Draft Recovery Plan Criteria :
Koocanusa Reservoir and Kootenai River/Kootenay Lake host 5 local populations (including British Columbia) with 100 individuals each and each core area contains at least 1,000 adults, Bull and Sophie lakes each support at least 1 local population containing 100 or more adults346
 
Kootenai River/Kootenay Lake Core
2016: 55 redds 90
Bull Lake Core
2015: 18 redds 90
Koocanusa Core
2015: 90 redds 90
Threatened Status & Trends

Mountain Snake Province

Clearwater Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout North Fork Clearwater, Fish Lake (North Fork Clearwater), Lochsa, Fish Lake (Lochsa), Selway, South Fork Clearwater, Lower and Middle Fork Clearwater (Within Clearwater Recovery Unit)      Draft Recovery Plan Criteria :
500 adults in each of Fish Lake (North Fork Clearwater, Fish Lake (Lochsa), and Lower/Middle Fork Clearwater

5,000 adults in each of the North Fork Clearwater, Lochsa, Selway, and South Fork Clearwater
 

North Fork Clearwater River Core
Little North Fork
2010: 64 redds
Lund Creek - 6 redds271
Little Lost Creek - 19 redds271
Lost Lake Creek - 7 redds271
Little North Fork - 22 redds271
Rocky Run Creek - 10 redds271
North Fork Clearwater
2010: 81 redds271
Bostonia Creek - 15 redds271
Niagra Gulch - 6 redds271
Placer Creek - 3 redds271
Vanderbit Gulch -57 redds271
2009: North Fork Kelley Creek - 6 redds271
2009: Long Creek - 11 redds271
2008: Quartz Creek -8 redds271
2008: Isabella Creek - 1 redd271
2008: Skull Creek - 9 redds271
2007: Swamp Creek - 1 redd271
Threatened Status & Trends
Salmon Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Upper Salmon, Pahsimeroi, Lake Creek, Lemhi, Middle Salmon-Panther, Opal Lake, Middle Fork Salmon, Middle Salmon-Chamberlain, South Fork Salmon, Little-Lower Salmon (Within Salmon River Recovery Unit)      Draft Recovery Plan Criteria :
Adults:
Upper Salmon - 5,000
Pahsimeroi - 3,000
Lake Creek - 100
Lemhi - 2,000
Middle Salmon-Panther - 3,000
Opal Lake - 5,000
Middle Fork Salmon - 5,000
Middle Salmon-Chamberlain - 2,000
South Fork Salmon - 5,000
Little-Lower Salmon - 2,000350
 
Density Estimates (fish/100m2)
Lower Salmon River
Slate Creek—0.26 (2007) 455
John Day Creek—0.00 (2006) 455
Skookumchuck Creek—0.00 (2006) 455
Little Salmon—0.04 (2006) 455

Upper and Lower Middle Fork Salmon River
Mainstem Middle Fork—0.25 (2007) 455
Loon Creek—0.07 (2005) 455
Camas Creek—0.30 (2005) 455
Marsh Creek—0.10 (2006) 455

Middle Salmon River
Panther Creek—0.13 (2006) 455
Moyer Creek—2.54 (2006) 455

Lemhi River
Lemhi River—0.13 (2006) 455, 141 redds (2007) 455
Hayden Creek—0.23 (2006) 455, 52 redds (2007) 455
Bear Valley Creek—0.13 (2006) 455, 25 redds (2007) 455

Pahsimeroi River
Pahsimeroi River—0.10 (2004) 455

Upper Salmon River
East Fork—0.04 (2006) 455
Mainstem—0.07 (2005) 455
Redfish Creek—0.04 (2005) 455
Valley Creek—0.05 (2004) 455
Threatened No Data

Upper Snake Province

Snake Headwaters Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Little Lost River (Within the Lost River Recovery Unit)      Draft Recovery Plan Criteria :
6,750 adults351
 
Abundance estimates for recovery unit
45,534 fish (±95% CI = 24,575)448

Density Estimate (Lost River Basin)
2.6 fish /100m2 (2004) 456

Threatened Snapshot
Snake Upper Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Little Lost River (Within the Lost River Recovery Unit)      Draft Recovery Plan Criteria :
6,750 adults351
 
Abundance estimates for recovery unit
45,534 fish (±95% CI = 24,575)448

Density Estimate (Lost River Basin)
2.6 fish /100m2 (2004) 456

Threatened Snapshot
Snake Upper Closed Basin Subbasin
 
Species ESU MPG Population Biological Objective (s) Biological Status Federal Status Data / Charts
Bull Trout Little Lost River (Within the Lost River Recovery Unit)      Draft Recovery Plan Criteria :
6,750 adults351
 
Abundance estimates for recovery unit
45,534 fish (±95% CI = 24,575) 448

Density Estimate (Lost River Basin)
2.6 fish /100m2 (2004)456

Threatened Snapshot