| Acreages within various characteristic layers stratified by Inventoried Roadless Area categories within Idaho. | ||||||||||||||||
| All acreage figures are rounded to the nearest 1,000. | ||||||||||||||||
| Idaho | INVENTORIED ROADLESS AREA CATEGORIES | SUM | ||||||||||||||
| …that does not allow road construction and reconstruction | …that does not allow road construction and the Forest Plan recommends wilderness | …that does allow road construction and reconstruction | ||||||||||||||
| IRA Category acres (1,000) | 2,285 | 1,371 | 5,666 | 9,322 | ||||||||||||
| FIRE CONDITION CLASS | acres* (1,000) | % | acres* (1,000) | % | acres* (1,000) | % | acres* (1,000) | |||||||||
| Condition Class 1 | 1,229 | 54 | 875 | 64 | 2,788 | 49 | 4,892 | |||||||||
| Condition Class 2 | 567 | 25 | 313 | 23 | 1,434 | 25 | 2,314 | |||||||||
| Condition Class 3 | 370 | 16 | 130 | 10 | 992 | 18 | 1,492 | |||||||||
| Non-Vegetation | 0 | 0 | 0 | |||||||||||||
| Agriculture | 46 | 2 | 16 | 1 | 187 | 3 | 249 | |||||||||
| Urban/Development/Agriculture | 75 | 3 | 37 | 3 | 261 | 5 | 373 | |||||||||
| Water | 0 | 0 | 6 | 0 | 6 | |||||||||||
| FIRE REGIMES | ||||||||||||||||
| 0-35 yrs; Low Severity | 306 | 13 | 117 | 9 | 776 | 14 | 1,199 | |||||||||
| 0-35 yrs; Stand Replacement | 18 | 1 | 0 | 40 | 1 | 58 | ||||||||||
| 35-100 yrs; Mixed Severity | 1,298 | 57 | 827 | 60 | 3,400 | 60 | 5,525 | |||||||||
| 35-100 yrs; Stand Replacement | 345 | 15 | 141 | 10 | 771 | 14 | 1,257 | |||||||||
| 200 + yrs; Stand Replacement | 315 | 14 | 285 | 21 | 674 | 12 | 1,274 | |||||||||
| Barren | 0 | 0 | 0 | |||||||||||||
| Water | 0 | 0 | 6 | 0 | 6 | |||||||||||
| MORTALITY | ||||||||||||||||
| Risk of Mortality Not Present | 1,618 | 71 | 1,024 | 75 | 4,193 | 74 | 6,835 | |||||||||
| Risk of Mortality Present | 667 | 29 | 347 | 25 | 1,473 | 26 | 2,487 | |||||||||
| LAND COVER CLASS | ||||||||||||||||
| Deciduous Forest | 32 | 1 | 25 | 2 | 187 | 3 | 244 | |||||||||
| Evergreen Forest | 2,018 | 88 | 1,196 | 87 | 4,527 | 80 | 7,741 | |||||||||
| Mixed Forest | 0 | 0 | 0 | |||||||||||||
| Shrub-Brush Rangeland | 37 | 2 | 40 | 3 | 272 | 5 | 349 | |||||||||
| Rangeland | 53 | 2 | 14 | 1 | 187 | 3 | 254 | |||||||||
| Wetland | 0 | 0 | 0 | |||||||||||||
| Tundra | 25 | 1 | 45 | 3 | 34 | 1 | 104 | |||||||||
| Urban/Development/Agriculture | 119 | 5 | 53 | 4 | 448 | 8 | 620 | |||||||||
| Barren Land | 0 | 0 | 0 | |||||||||||||
| Water | 0 | 0 | 6 | 0 | 6 | |||||||||||
| PROTECTED AREA DATABASE | ||||||||||||||||
| GAP Code 1 | 23 | 1 | 11 | 1 | 57 | 1 | 91 | |||||||||
| GAP Code 2 | 69 | 3 | 185 | 14 | 215 | 4 | 469 | |||||||||
| GAP Code 3 | 2,171 | 95 | 1,172 | 86 | 5,270 | 93 | 8,613 | |||||||||
| Outside of PAD | 23 | 1 | 3 | 0 | 125 | 2 | 151 | |||||||||
| * These GIS overlays were prepared from coverages compiled at various scales and resolutions. To account for the differences in scales and resolutions, a percent-area by attribute was calculated for each characteristic overlay layer. The acres in each roadless category/characteristic attribute were calculated by multiplying percent-area and total acreages from the Inventoried Roadless Area coverage. Derived acres have been rounded to the nearest 1,000 acres. | ||||||||||||||||