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Table 8: Historical trend in stand composition and water yield, Douglas
<br />Fir.
<br />Acres Douglas Fir by Size and Year
<br />Date
<br />Water
<br />Yield
<br />Non-
<br />stocked
<br />Seedling/
<br />Sapling
<br />Pole
<br />Sawtimber
<br />Total
<br />1860
<br />6.6
<br />24
<br />9,306
<br />131
<br />2,818
<br />12,257
<br />1880
<br />7.4
<br />2,818
<br />8,824
<br />613
<br />1,614
<br />12,257
<br />1900
<br />5.8
<br />24,796
<br />5,455
<br />6,801
<br />6,594
<br />12,257
<br />1920
<br />5.2
<br />6,594
<br />2,818
<br />9,438
<br />12,257
<br />1940
<br />5.2
<br />2,818
<br />9,251
<br />186
<br />12,257
<br />1960
<br />4.9
<br />131
<br />6,594
<br />11,540
<br />584
<br />12,257
<br />1980
<br />4.9
<br />303
<br />132
<br />4,990
<br />7,134
<br />12,257
<br />2000
<br />4.9
<br />102
<br />1311
<br />2,818
<br />9,2031
<br />12,257
<br />Table 9: Historical trend in stand composition and water yield, Limber
<br />Pine. _
<br />Acres Limber Pine by Size and Year
<br />Date
<br />Water
<br />Yield
<br />Non
<br />Seed/Sap
<br />Pole
<br />Saw
<br />Total
<br />1860
<br />6.8
<br />24
<br />303
<br />6,594
<br />4,624
<br />11,546
<br />1880
<br />8.6
<br />4,648
<br />303
<br />6,594
<br />1,614
<br />11,546
<br />1900
<br />7.5
<br />24,796
<br />4,648
<br />303
<br />6,594
<br />11,546
<br />1920
<br />10.4
<br />6,594
<br />4,648
<br />303
<br />11,546
<br />1940
<br />8.1
<br />6,594
<br />4,648
<br />303
<br />11,546
<br />1960
<br />8.1
<br />303
<br />6,594
<br />4,648
<br />150
<br />11,546
<br />1980
<br />6.9
<br />303
<br />11,218
<br />24
<br />11,546
<br />20001
<br />6.9
<br />241
<br />303
<br />6,594
<br />4,624
<br />11,546
<br />Table 10: Historical trend in stand composition and water yield, Aspen.
<br />Acres Aspen by Size and Year
<br />Date
<br />Water
<br />Yield
<br />Non
<br />Seed/Sap
<br />Pole
<br />Saw
<br />Total
<br />1860
<br />10.3
<br />29,125
<br />29,696
<br />3,046
<br />61,869
<br />1880
<br />10.1
<br />7,946
<br />52,307
<br />1,614
<br />61,869
<br />1900
<br />11.2
<br />24,796
<br />7,946
<br />25,232
<br />3,893
<br />61,869
<br />1920
<br />11.1
<br />29,265
<br />32,602
<br />61,869
<br />1940
<br />10.6
<br />53,922
<br />7,946
<br />61,869
<br />1960
<br />10.2
<br />29,265
<br />32,452
<br />150
<br />61,869
<br />1980
<br />10.1
<br />7,946
<br />53,922
<br />61,869
<br />2000
<br />10.0
<br />1,6141
<br />7,946
<br />29,125
<br />23,1821
<br />61,869
<br />36
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