6.8 King’s 50-year Site Index Tables

King’s 50-year site index values for Douglas-fir.  From King 1966.
Site Index (ft.) 
 Age (yrs.) 50 60 70 80 90 100 110 120 130 140 150 160
5 8.8 9.6 10.4 11.3 12.1 13.1 14 15 16.1 17.2 18.4 19.6
10 13.6 15.7 17.8 20 22.3 24.5 26.8 29.2 31.6 34.1 36.6 39.1
15 19.8 23.2 26.7 30.2 33.7 37.3 40.8 44.5 48.1 51.8 55.5 59.2
20 25.6 30.3 35 39.7 44.4 49.1 53.9 58.6 63.4 68.2 73 77.9
25 30.9 36.7 42.5 48.3 54.1 59.9 65.7 71.6 77.3 83.2 89.1 94.8
30 35.6 42.4 49.3 56.1 62.9 69.7 76.4 83.2 90 96.8 103.5 110.3
35 39.8 47.6 55.3 63 70.7 78.4 86.1 93.8 101.5 109.1 116.8 124.4
40 43.6 52.2 60.7 69.3 77.8 86.3 94.8 103.3 111.9 120.4 128.8 137.3
45 47 56.3 65.6 74.9 84.2 93.5 102.8 112 121.3 130.6 139.9 149
50 50 60 70 80 90 100 110 120 130 140 150 160
55 52.7 63.3 74 84.6 95.3 105.9 116.5 127.2 137.9 148.6 159.3 170
60 55.2 66.4 77.6 88.8 100.1 111.3 122.6 133.9 145.2 156.5 167.9 179.2
65 57.4 69.2 80.9 92.7 104.5 116.3 128.1 140 151.9 163.9 175.8 187.8
70 59.5 71.7 83.9 96.2 108.5 120.9 133.2 145.7 158.2 170.7 183.3 195.8
75 61.4 74 86.7 99.5 112.3 125.1 138 150.9 163.9 177 190.1 203.2
80 63.1 76.2 89.3 102.5 115.7 129 142.4 155.8 169.3 182.9 196.5 210.2
85 64.7 78.1 91.7 105.3 118.9 132.6 146.4 160.3 174.3 188.4 202.6 216.2
90 66.2 80 93.9 107.8 121.9 136 150.2 164.5 179 193.5 208.2 222.8
95 67.5 81.7 95.9 110.2 124.7 139.2 153.8 168.5 183.4 198.4 213.5 228.6
100 68.6 83.2 97.8 112.5 127.2 142.1 157.1 172.2 187.5 202.9 218.4 234
105 70 84.7 99.6 114.6 129.7 144.9 160.2 175.7 191.4 207.2 223.1 239.1
110 71.1 86.1 101.2 116.5 131.9 147.5 163.2 179 195.1 211.2 227.5 243.9
115 72.1 87.4 102.8 118.4 134.1 149.9 165.9 182.1 198.5 215 231.7 248.4
120 73.1 88.6 104.3 120.1 136.1 152.2 168.5 185 201.7 218.6 235.6 252.7

 

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6.8 King's 50-year Site Index Tables by Joan DeYoung is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.