Middle Fork Complex
200633,857 acresIdaho
The Middle Fork Complex burned 33,857 acres, about 53 square miles, across Custer County. It began on August 9, 2006.
Watch how it happenedMiddle Fork Complex · 2006
How it happened
Watch it burn in the order satellites saw it, coloured by how severely each place burned.
How severely it burned
Burn severity inside the final perimeter, classified from Landsat images taken before and after the fire.

| Severity | Share | Acres |
|---|---|---|
| Highmost vegetation consumed, soils altered | 19% | 6,303 |
| Moderatemixed: many trees killed, some survive | 19% | 6,590 |
| Lowsurface fire, most trees survive | 27% | 9,074 |
| Unburned to lowislands inside the perimeter, little change | 32% | 10,947 |
| Increased greennessvegetation greener after the fire than before | 0.2% | 64 |
| Not mappedcloud, shadow or water in the satellite images | 2.6% | 879 |
19% of the area inside the perimeter burned at high severity, about 6,303 acres; 38% burned at moderate or high severity.
Monitoring Trends in Burn Severity (U.S. Geological Survey and USDA Forest Service). Classes come from the change in a Landsat burn index (dNBR) between images before and after the fire; acres are each class’s share of the fire’s mapped area.
Where it burned
Acres inside each county, measured from the satellite-mapped perimeter.
| Custer County | ID | 33,859 |
Other large fires in Idaho in 2006
- Crystal Fire218,571 acres
- Sailor Cap Fire62,679 acres
- Foster Gulch Fire52,456 acres
- Stone 2 Fire50,659 acres
- Rattlesnake Complex48,305 acres
- Red Mountain Fire33,388 acres
- Heavens Gate Complex (Black Butte)30,690 acres
- Southfork Complex (Cougar)27,914 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.