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Black Mountain

Unit Information

Beaverhead-Deerlodge National Forest
U.S. Forest Service
420 Barrett St
Dillon, MT 59725

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Alder Creek, Christensen, Trail Creek and Black Mountain Update 8.17.21

Black Mountain Wildfire
News – 8/17/2021

Alder Creek, Trail Creek, Christensen, and Black Mountain
Fire Update
August 17, 2021


Open house meetings have been scheduled for Wise River, Tuesday from 5-7pm and Jackson, Wednesday from 5-7pm. Contact Public Information for more information. 


Alder Creek
Size: 13,984 Acres
Containment: 10%
Location: 7 miles west of Wise River, MT
Start Date: July 8, 2021
Cause: Unknown
Total personnel: 279

Trail Creek
Size: 38,845 Acres
Containment: 26%
Location: 20 miles west of Wisdom, MT
Start Date: July 8, 2021
Cause: Lightning
Total personnel: 273

Size: 11,012 Acres
Containment: 10%
Location: 12 miles west of Wise River, MT
Start Date: July 16, 2021
Cause: Unknown
Total personnel: 52

Black Mountain
Size: 1,042 Acres
Containment: 85%
Location: 13 miles south of Jackson, MT
Start Date: July 17, 2021
Cause: Lightning
Total personnel: 16

Alder Creek Fire: Smoke and cloud cover limited fire behavior across the area and kept movement slower than expected. Aircraft were able to drop water on the Deno Creek and Stine Ridge areas to keep heat down on the southeast section of the fire. Logging operations continued to remove downed trees from surrounding roads. Crews also tested and ran water pumps for structure protection near the Pioneer Scenic Byway.

Christensen Fire: Crews took advantage of the weather conditions to continue constructing lines on the northwest side of the fire. These defensive lines near Highway 43 are nearly complete. Fire movement was contained to the interior of the fire. Due to the incoming cold front, fire growth is expected to be minimal through Wednesday.

Trail Creek Fire: Aircraft dropped water onhot spots that remained in areas north of the Big Hole Battlefield. Fire could move slowly through Salix Creek, but will run into wet meadow barriers. Heat remains in the Gory Creek drainage with a little movement to the south. The fire moved off of Three Mile Ridge and backed into the bottom of the Nez Perce drainage. There will be an increase in firefighter presence in the area between Gibbonsville and Three Mile Creek to ensure the fire doesn’t cross Gibbonsville Rd. Crews worked to improve defensive lines around the fire with lookouts posted to identify fire growth to the west. This early detection allows crews to take swift suppression actions.

Black Mountain Fire: No fire activity has been reported for nearly two weeks now. As chipping operations along Forest Service Road 7335 near completion, resources will become available for other fires. Crews continue to patrol and monitor the fire perimeter.

Fire Weather Today: The weather shifted with increased winds Monday evening, helping clear some smoke from the area, however drift smoke from the south and southwest remains. Cloud cover along with the smoke kept fire behavior minimal. A new weather pattern will bring precipitation to the area Tuesday afternoon through Wednesday afternoon. Cooling temperatures and increased humidity will create favorable conditions for minimum fire growth.

Major Closures:
-Hwy 43 and Pioneer Byway remain open. Motorists are asked to slow down and be on the alert for firefighters, heavy smoke, and downed trees. Please check the Montana DOT Road Report website for current conditions.
-Continental Divide Trail: Closed from Lemhi Pass north to Mussigbrod Creek.
-Big Hole National Battlefield is closed until further notice. North and South VanHouten, Miner Lakes, Twin Lakes, May Creek and Divide Bridge Campgrounds are closed.
-Forest Closure orders in the Beaverhead-Deerlodge and Salmon-Challis National Forests are in effect for all three fires.

Stage 2 Fire Restrictions are in effect for SW Montana 
Stage 1 Fire Restrictions are in effect for Central ID

Stage 1 evacuation on Highway 43 from Mile Marker 35 to the County Line at Mile Marker 41.5. This includes the residents of Doolittle Creek Road and North Doolittle Creek Road. Southside of Highway 43 from Alder Creek Road to Dickie Bridge. Westside of the Scenic Byway from the Wisdom Airport to Harriette Lou Road. All evacuation statuses have been removed in Alder Creek drainage and Southside of Highway 43 from Alder Creek Road to Mile Marker 62. Lemhi County Sheriff has contacted residences in threatened areas on the west side of the Trail Creek Fire in Idaho and placed in “Set” evacuation status.
Evacuation Info: 208-756-8980.

For updates and additional incident information can be found at 

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