Pine Springs Basin Fire
199071,241 acresOregon
The Pine Springs Basin Fire burned 71,241 acres, about 111 square miles, across Harney County. It began on August 6, 1990.
Watch how it happenedPine Springs Basin Fire · 1990
How it happened
See how severely each place burned, revealed outward from where it started.
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 | 31% | 22,334 |
| Moderatemixed: many trees killed, some survive | 20% | 14,301 |
| Lowsurface fire, most trees survive | 25% | 17,675 |
| Unburned to lowislands inside the perimeter, little change | 23% | 16,671 |
| Increased greennessvegetation greener after the fire than before | 0.4% | 260 |
31% of the area inside the perimeter burned at high severity, about 22,334 acres; 51% 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.
| Harney County | OR | 71,143 |
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.