Hayden Fire
202332,326 acresIdaho
The Hayden Fire burned 32,326 acres, about 51 square miles, across Lemhi County. It began on July 19, 2023.
Watch how it happenedHayden Fire · 2023
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 | 21% | 6,698 |
| Moderatemixed: many trees killed, some survive | 19% | 6,014 |
| Lowsurface fire, most trees survive | 41% | 13,291 |
| Unburned to lowislands inside the perimeter, little change | 19% | 6,236 |
| Increased greennessvegetation greener after the fire than before | 0.1% | 26 |
| Not mappedcloud, shadow or water in the satellite images | 0.2% | 62 |
21% of the area inside the perimeter burned at high severity, about 6,698 acres; 39% 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.
| Lemhi County | ID | 32,296 |
Other large fires in Idaho in 2023
- Elkhorn Fire26,149 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.