| Acres at risk from catastrophic fire and precentages of total Inventoried Roadless Areas stratified by Region | |||||||||
| All acreages figures are rounded to the nearest 1,000 acres. | |||||||||
| Region | National Forest System Lands Total Acres | Inventoried Roadless Areas Total Acres | CC 1 - Low | CC 2 - Med | CC 3 - High | CC 2+3 | CC 1+2+3 | ||
| Total Acres | Total Acres | Total Acres | Total Acres | Total Acres | |||||
| (% of Inventoried Roadless Areas) | (% of Inventoried Roadless Areas) | (% of Inventoried Roadless Areas) | (% of Inventoried Roadless Areas) | (% of Inventoried Roadless Areas) | |||||
| East | 16,911 | 1,189 | 556 | 294 | 134 | 428 | 984 | ||
| (46.8%) | (24.8%) | (11.3%) | (36.0%) | (82.8%) | |||||
| West | 144,380 | 42,122 | 2,452 | 6,525 | 3,582 | 10,107 | 12,559 | ||
| (5.8%) | (15.5%) | (8.5%) | (24.0%) | (29.8%) | |||||
| Definitions of Fire Condition Classes | |||||||||
| 1 | Forested areas with an historically short fire return interval usually have frequent fires of low intensity | ||||||||
| 2 | One or more fire return intervals have been missed, possibly resulting in increased fire sizes and intensities and decreased landscape mosaics and diversity | ||||||||
| 3 | Multiple fire return intervals have been missed resulting in dramatic departure from historical conditions | ||||||||