, The Oolles 



Figure 5. 



-Principal drainages, national forests, and principal cities of eastern Oregon. 



Xonjoresl Land 



No attempt was made to classify the nonforest 

 land into barrens, agricultural, and nonforest land 

 other than agricultural. In the first place, by far 

 the greater part of the farm land is in the territory 

 that was originally treeless and farm and forest are 

 not intermingled as they are west of the Cascade 

 Range. Very little forest land has been cleared 

 for agriculture and there is little likelihood of any 

 significant land clearing in the immediate future. 

 Grazing of forest land and intermingled open 



grassland is a common practice. Over most of the 

 region it is seasonal. 

 Conifer Sawlog Types 



The ponderosa pine sawlog types occupy 10.4 

 million acres or 64 percent of the region's com- 

 mercial conifer land; other conifer sawlog types 

 total 3.0 million acres or 19 percent. The average 

 volume per acre of the saw-timber types in eastern 

 Oregon (table 5) is 10 M board feet and in eastern 

 Washington (table 6) is 8.2 M board feet. 



VIRGIN PONDEROSA PINE TYPES 



Forest exploitation has been concentrated in 



402110"— 42- 



13 



