Acreages within various characteristic layers stratified by Inventoried Roadless Area categories within Virginia.
All acreage figures are rounded to the nearest 1,000.
Washington 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)   1,284   15   716   2,015
       
FIRE CONDITION CLASS   acres* (1,000) %   acres* (1,000) %   acres* (1,000) %   acres* (1,000)
Condition Class 1     474 37   5 36   103 14   582
Condition Class 2     524 41   4 27   288 40   816
Condition Class 3     252 20   5 37   307 43   564
Non-Vegetation       0     0     0    
Agriculture     5 0     0   4 1   9
Urban/Development/Agriculture   21 2     1   13 2   34
Water       9 1     0   1 0   10
 
FIRE REGIMES                      
0-35 yrs; Low Severity     244 19   6 38   358 50   608
0-35 yrs; Stand Replacement     23 2     3   5 1   28
35-100 yrs; Mixed Severity     370 29   1 10   172 24   543
35-100 yrs; Stand Replacement   1 0     0   10 1   11
200 + yrs; Stand Replacement   635 50   7 50   171 24   813
Barren       0     0     0    
Water       9 1     0   1 0   10
 
MORTALITY                      
Risk of Mortality Not Present     1,227 96   14 93   659 92   1,900
Risk of Mortality Present     56 4   1 7   57 8   114
 
LAND COVER CLASS                      
Deciduous Forest     33 3     0   73 10   106
Evergreen Forest     1,189 93   14 96   622 87   1,825
Mixed Forest       0     0     0    
Shrub-Brush Rangeland     14 1     3   1 0   15
Rangeland     6 1     0   1 0   7
Wetland       0     0     0    
Tundra     5 0     0   1 0   6
Urban/Development/Agriculture   26 2     1   17 2   43
Barren Land       0     0     0    
Water       9 1     0   1 0   10
 
PROTECTED AREA DATABASE                      
GAP Code 1     24 2   1 7   6 1   31
GAP Code 2       0     0     0    
GAP Code 3     1,228 96   12 78   686 96   1,926
Outside of PAD       30 2   2 15   24 3   56
* 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.