Table 21.  Approximate Weight and Energy Yield of Roundwood Fuelwood for Roundwood Harvested in the United States for Fuelwood, by Region, Species Group,
           and Timber Class, 1991
           (Million Tons)

   Region                  Total of All Sources                  Growing Stock                        Other Sources[a]
                      Total   Softwoods   Hardwoods      Total    Softwoods   Hardwoods       Total   Softwoods   Hardwoods

Northeast..........   18.58      1.48       17.10         2.40       0.20        2.20         16.18      1.21       14.90
North Central......   14.82      0.60       14.22         2.09       0.11        1.97         12.73      0.40       12.25
Southeast..........    8.75      0.94        7.81         5.13       0.51        4.62          3.62      0.43        3.19
South Central......    8.12      0.28        7.84         2.16       0.09        2.07          5.96      0.19        5.77
Great Plains.......    1.16      0.46        1.12         0.07       0.01        0.06          1.09      0.04        1.05
Intermountain......    1.72      1.39        0.33         0.12       0.09        0.03          1.59      1.30        0.29
Pacific Northwest..    4.70      3.05        1.65         2.82       1.67        1.14          1.91      1.38        0.54
Pacific Southwest..    4.37      2.83        1.54         1.60       1.34        0.25          2.78      1.49        1.29
 
U.S. Total Fuelwood.. 62.22     10.60       51.62        16.38       4.02       12.37         45.87      6.85       39.29

Approximate Total
   Energy Yield[b]
   (trillion Btu)... 870.80    148.40      722.60       229.40      56.30      173.10        642.20     95.90      550.10

   [a]Weight is derived from Forest Service volume data, reported according to wet basis air dry moisture content of 12
percent to 13 percent, multiplying by Forest Service conversion standards of 35 pounds per cubic foot for softwoods and
40 pounds per cubic foot for hardwoods.
   [b]Based on an EIA-estimated energy yield of approximately 14 million Btu per ton.
   Note: Totals may not equal sum of components due to independent rounding.
   Source: Energy Information Administration, Office of Coal, Nuclear, Electric and Alternate Fuels.