Table 35. — Comparison of annual saw-timber growth and depletion, lumber tally, by unit, 1936 

 [In million board feet— i. e., 000,000 omitted] 



State and unit 



Current 



gross 

 growth ' 



Normal 

 mortality 

 depletion 2 



Current net 

 growth 3 



Average fire 

 loss 1924-35 



Average 

 cutting 



depletion 

 1925-36 



Reduction or 



increase in 



saw-timber 



volume 



Potential 

 increase in 

 net growth 



Eastern Washington: 



Chelan-Colville _ 



250.8 



222.2 



16.5 



180.4 

 167.2 



8.8 



70.4 

 55.0 



53.9 

 6.6 



135.3 



136.4 



4.4 



-118.8 

 -88.0 

 +3.3 



378 4 





321 2 





31 9 









Total --- 



489.5 



356.4 



133.1 



60.5 



276.1 



-203.5 



731.5 



Eastern Oregon: 



146.3 

 178.2 



172.7 

 272.8 



103.4 

 160.6 

 152.9 

 245.3 



42.9 

 17.6 

 19.8 

 27.5 



1.1 

 12.1 



7.7 

 14.3 



90.2 

 255.2 

 119.9 

 457.6 



-48.4 

 -249. 7 

 -107.8 

 -444.4 



243 1 





259 6 





350 9 



Klamath Plateau - 



414.7 







Total - 



770.0 



662.2 



107.8 



35.2 



922.9 



-850.3 



1, 268. 3 







Region total-,- - - 



1, 259. 5 



1, 018. 6 



240.9 



95.7 



1, 199. 



-1,053.8 



1,999 8 







1 On commercial forest land, 1935. 



' Exclusive of fire loss. 



* On commercial stands not more than 160 years in age, 1935. 



Table 36. — Current annual gross growth, lumber tally, in the ponderosa pine region, by unit and broad age class, 1936 





Mature stands ' 



Immature stands '- 



Total 



State and unit 



Area 



Current an- 

 nual gross 

 growth 



Area 



Current an- 

 nual gross 

 growth 



Area 



Current an- 

 nual gross 

 growth 



Growth of 

 ponderosa 

 pine as por- 

 tion of total 

 growth 



Eastern Washington: 



Chelan-Colville 



Thousand 

 acres 

 2,285 

 1,422 

 124 



Million 

 board feet 

 169.4 

 158.4 

 7.7 



Thousand 

 acres 

 1,103 

 713 

 162 



Million 

 board feet 

 81.4 

 63.8 



8.8 



Thousand 

 acres 

 3,388 

 2,135 



286 



Million 

 board feet 

 250.8 

 222.2 

 16.5 



Percent 



39 





37 





35" 







Total - --- 



3,831 



335.5 



1,978 



154.0 



5,809 



489.5 



38 







Eastern Oregon: 



1,387 

 1,582 

 2,428 

 2,426 



97.9 

 158.4 

 149.6 

 240.9 



799 

 401 

 457 



482 



48.4 

 19.8 

 23.1 

 31.9 



2,186 

 1,983 



2,885 

 2,908 



146.3 

 178.2 

 172.7 

 272.8 



43 





70 





75 





77 







Total 



■ 7,823 



646.8 



2,139 



123.2 



9,962 



770.0 



69 









11, 654 



982.3 



4,117 



277 ^ 



15, 771 



1, 259. 5 



58 







1 Stands more than 160 years old, on commercial conifer forest land. 



2 Stands 160 years or less in age, on commercial conifer forest land. 



94 



