Fish River Fire
201132,897 acresAlaska
The Fish River Fire burned 32,897 acres, about 51 square miles, across Northwest Arctic Borough. It began on May 26, 2011.
Watch how it happenedFish River Fire · 2011
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 |
|---|---|---|
| Moderatemixed: many trees killed, some survive | 29% | 9,414 |
| Lowsurface fire, most trees survive | 68% | 22,487 |
| Unburned to lowislands inside the perimeter, little change | 3.0% | 994 |
No part of the fire was classed as high severity; 29% burned at moderate 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.
| Northwest Arctic Borough | AK | 32,882 |
Other large fires in Alaska in 2011
- Dish Mountain Fire26,277 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.