sitka spruce: uses, growth, management. 



35 



Table 14. — Comparative diameters at br-east height and above swell of Sitka 

 spruce, based on maximum taper. 



This table is based on maximum taper measurements of 37 trees which 

 grew in Oregon and Washington. The figures under " taper " are inches per 

 foot of vertical distance. The diameters above swell are noted for average 

 heights of swell. 



(Curved.) 



Diameter breast- 

 high. 



Diameter 

 above 

 swell. 



Average 

 height 

 of swell. 



Taper. 



Diameter breast- 

 high. 



Diameter 

 above 

 swell. 



Average 

 height 

 of swell. 



Taper. 



Inches. 

 60 ; 



Inches. 

 51 

 56 

 61 

 66 

 67 

 71 

 76 

 72 

 77 

 81 



Feet. 



} ' 

 } ' 



1 * 



] 



Inches. 

 J 3.5 

 \ 3.5 

 / 3.6 

 \ 3.7 

 f 3.8 

 \ 3.9 

 4.0 

 f 4.1 



Inches. 

 110 



Inches. 

 76 

 80 

 85 

 89 

 93 

 97 

 102 

 106 



Feet. 



- 



} » 



Inches. 

 f 4.5 



65 



115 



\ 4.6 



70 



120 



4.7 





125 



( 4.8 



SO 



130 



\ 4.9 



85 



135 



1 *.o 



90 



140 



f *.l 

 \ 5.2 



95 



145 



100 



105 



\ 10 \i 4.2 

 J 1 4. 3 













Table 15. 1 — Average total height of Sitka spruce on all sites in different parts 

 of Oregon and Washington. 



(Curved.) 



Age. 



Tsiltcoos. 



Newport. 



Clatsop. 



Ray- 

 mond. 



Hoquiam. 



Beaver. 



Average. 





Total height in feet. 



Years. 

 20 



22 

 44 

 62 

 82 



100 

 118 

 134 



143 

 158 



168 

 176 

 184 

 190 

 196 



200 

 205 



20 

 34 

 51 

 70 



89 

 106 

 121 

 134 



147 



157 

 167 

 175 

 183 

 190 



196 

 201 

 205 

 210 

 213 



216 



218 

 220 

 222 

 224 



48 

 66 

 82 

 96 



109 

 122 

 133 

 144 

 155 



165 

 173 

 181 

 . 188 

 194 



199 

 204 

 208 

 212 

 215 



217 

 220 

 222 

 223 

 225 



32 

 52 

 70 



85 



98 

 110 

 120 

 130 

 139 



148 

 156 

 164 



171 

 178 



184 

 190 

 196 

 201 

 206 



210 

 214 

 218 

 221 

 223 



28 

 48 

 66 

 83 



99 

 114 

 127 

 141 



154 



166 

 176 

 186 

 194 

 201 



205 

 213 

 218 

 223 

 227 



230 

 234 

 236 

 239 

 241 



38 

 60 

 85 

 110 



130 

 147 

 161 

 173 

 183 



192 

 201 

 209 

 216 

 222 



227 

 232 

 236 

 240 

 244 



246 

 249 

 251 

 252 

 254 



31 



30 



51 



40 



7C 



50 



87 



60 



104 



70 



119 



80 



132 



90 



144 



100 



154 



110 



164 



120 



173 



130 



181 



140 



188 



150 



194 



160 



200 



170 



205 



180 



210 



190 





214 



200 





218 



210 





221 



220 





224 



230 





226 



210 





228 



250 





230 



1 The following i a description of the localities in which the growth measurements were taken: 

 TiUtcoos Lake, Lane County, Oreg.—Puro stand of evon-aged second growth (175 years) on gontle 

 ill deep, loose, sandy to sandy loam; moist but well drained. 

 ■ Lincoln County, Oreo.— Three types- 130-year-old pure stand on moist, well-drained flat at 

 leap sandy foam; 320-year-old stand mixed with young hemlock on slopes, 300 to 350 

 tl-drained landyloam; and 300-yoar-old mixed stand in wot clay loam of croek 

 i elevation. 

 Clot '>[/ County. Oreg. -Two typo.;: 300-year-old pure stand on gentle slopes at altitudes of 900 to 

 I clay loam; 300-year-old stand in mixture with hemlock on level ground 

 de of 400 feet. 

 . /, Pacific County, Wash. T wo type •; im ill groups oi even-age, varying between 110 and 440 

 mars, on pitch, well drained, deep, and oiolay loam; parklike stand on poorly drained 



w County, Wash. -Twotvpes; 250-year-old pure itand on moist, well-drained flat, 

 Ion, In I amy oil underlain wil.li gravel; 350-year-old stand in mixture on wot poorly 

 iru ned flat, of clayey loilat i ime elevation. 



Beaver, Clallam County, Wash. Three hundred-year-old, pure itand in very moist, level, creel basin ot 

 rich »n rvial toll at .' ifeet. 



