ordinarily less than 5 M board feet per acre (if 

 ponderosa pine, less than 2 M board feet); no 

 volume recorded; does not include upper portions 

 of valleys or higher slopes now inaccessible but 

 potentially loggable. 



All type mapping in the region was done by a 

 form of intensive reconnaissance and the same gen- 

 eral procedure was followed on all forest lands. 

 While in theory the mapping was to be limited 

 principally to areas not previously covered by in- 

 tensive cruises, in actual practice it amounted to an 

 almost complete coverage of all forest land. Areas 

 covered by acceptable cruises were examined ex- 

 tensively to determine type boundaries, to map out 

 small openings such as meadows and glades, to 

 determine site quality of the forest land, and to 

 verify the coverage of the previous cruise. The 

 intensity of examination varied considerably, de- 

 pending upon character and species of timber and 

 intensity and reliability of preexisting records. 



In addition to type mapping according to com- 

 position and size, the even-aged immature forest 

 stands, those in which most of the dominant trees 

 are less than 22 inches in diameter, were classified 

 according to age in 10-year classes and according to 

 their density in three degrees of stocking. These 

 data are not shown statistically in this report but 

 were used in making growth estimates. If a forest 

 of seedlings, saplings, or small second growth was 

 dense enough to cover 70 to 100 percent of the area 

 (as measured by the stocked-quadrat method), it 

 was classified as well stocked; if 40 to 69 percent was 

 covered it was called medium stocked; if 10 to 39 

 percent, it was called poorly stocked. Areas less 

 than 10 percent stocked were termed nonrestocked. 

 If uneven-aged the stands were classified on the 

 basis of poles and reproduction combined. 



Other Classifications 



The term "site quality" denotes the forest-pro- 

 ductive capacity of an area, determined by the 

 composite effect of all climatic and soil conditions. 

 Site-quality classifications based on height of domi- 

 nant and codominant trees at a given age have 

 been adopted for the ponderosa pine types and 

 the Douglas-fir types, six classes being used for 

 ponderosa pine and five for Douglas fir, the high- 

 est class being designated I. The ponderosa pine 

 classification was used for the pure ponderosa 



pine, ponderosa pine, sugar pine, pine woodland, 

 pine mixture, and white fir types; the Douglas-fir 

 classification was used for the Douglas fir, upper- 

 slope mixture, fir-mountain hemlock, and "cedar" 

 types. Land occupied by other types was not 

 classified by site quality, unless it was judged 

 likely to support in the future one of the types 

 previously listed. Deforested areas, cut-over land, 

 and burns were classified on the basis of the 

 original type. 



Ownership status was determined for all lands 

 surveyed, and all lands not shown as public prop- 

 erty were classed as private. It is, of course, 

 recognized that ownership is constantly changing 

 and that the totals given for individual ownership 

 classes probably fail in many cases to agree with 

 statistics from other sources. Nonforest land was 

 not classified as to ownership except on the national 

 forests. The ownership classes considered are: 



Private. All privately owned forest property, including 

 farm woods. 



State, available for cutting. Includes any State-owned 

 forest property not reserved from cutting. 



State, reserved from cutting. Includes State-owned 

 forest property used for parks, National-Guard camp- 

 grounds, etc. 



County. Forest property deeded to the county. (Tax- 

 delinquent land not deeded to the county is classified as 

 private.) 



Municipal. Includes all municipally owned forest prop- 

 erty outside the platted limits of municipalities. 



Indian. Includes both tribal lands and ttust allotments. 



Revested land grant. Includes Oregon & California 

 Railroad and other land grants that have reverted to Fed- 

 eral ownership, whether classified as timber, agricultural, 

 or power withdrawals. 



Federal, other than national forest and revested land 

 grant, reserved from cutting. Includes national parks, 

 wildlife refuges, military reservations, etc. 



National forest available for cutting. 



National forest reserved from cutting. 



Railroad selection pending. Federal lands designated 

 for selection as railroad grants but not yet deeded. 



The term "reserved from cutting" as applied 

 to State and national-forest land or other Federal 

 land means that the timber on it is unavailable 

 for cutting because of statute, proclamation, or 

 policy. Land so classed usually had been officially 

 dedicated either to watershed protection, to 

 recreational use, or as national-forest primitive 

 areas. The term "available for cutting" means 

 simply that there was no legal or formal prohibi- 

 tion on timber cutting; it does not imply the 

 presence of timber suitable for cutting or, in fact, 

 of any timber at all. 



