SITKA SPRUCE : USES, GROWTH, MANAGEMENT. 
35 
Table 14. — Comparative diameters at breast 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- 
Table 15. 1 — Average total height of Sitka spruce on all 
of Oregon and Washington. 
ites in different parts 
(Curved.) 
Age. 
Tsilteoos.: Newport.' Clatsop. 
I 
Ray- 
mond. 
Hoquiam 
Beaver, j Average. 
Total height in feet. 
Years. 
20. 
30. 
40. 
50. 
60. 
70. 
SO. 
90. 
100. 
110. 
120. 
130. 
140. 
150. 
160. 
170. 
ISO. 
190. 
200. 
210. 
220. 
230. 
240. 
250. 
44 
62 
S2 
100 
118 
134 
14S 
158 
168 
176 
184 
190 
196 
200 
205 
20 
48 
32 
28 
38 
34 
66 
52 
4S 
60 
51 
82 
70 
66 
85 
70 
96 
85 
83 
110 
S9 
109 
98 
99 
130 
106 
122 
110 
114 
147 
121 
133 
120 
127 
161 
134 
144 
130 
141 
173 
147 
155 
139 
154 
183 
157 
165 
148 
166 
192 
167 
173 
156 
176 
201 
175 
181 
164 
186 
209 
183 
188 
171 
194 
216 
190 
194 
178 
201 
222 
196 
199 
184 
205 
227 ' 
201 
204 
190 
213 
232 : 
205 
208 
196 
218 
236 ! 
210 
212 
201 
223 
240 i 
213 
215 
206 
227 
244 
216 
217 
210 
230 
246 1 
218 
220 
214 
234 
249 
220 
222 
218 
236 
251 ; 
222 
223 
221 
239 
252 ; 
224 
225 
223 
241 
254 I 
31 
51 
7C 
87 
104 
119 
132 
144 
154 
164 
173 
181 
188 
194 
200 
205 
210 
214 
218 
221 
224 
226 
228 
230 
1 The following is a description of the localities in which the growth measurements were taken: 
Tsilteoos Lake, Lane County, Oreg.—P\xce stand of even-aged second growth (175 years) on gentle 
slopes, at elevation of 150 to 300 feet. Soil deep, loose, sandy to sandy loam; moist but well drained. 
i Newport, Lincoln County, Or eg— Three types; 130-year-old pure stand on moist, well-drained flat at 
230-foot elevation in deep sandy loam; 320-year-old stand mixed with young hemlock on slopes, 300 to 350 
feet above sea level in deep, well-drained sandy loam; and 300-year-old mixed stand in wet clay loam of creek 
bottom, 25 to 50 feet in elevarion. 
Clatsop, Clatsop County, Oreg — Two types: 300-year-old pure stand on gentle slopes at altitudes of 900 to 
1,100 feet, deep, moist, well-drained clay loam; 300-year-old stand in mixture with hemlock on level ground 
of wet clay loam at altitude of 400 feet. 
^Raymond, Pacific County, Wash.— Two types; ^mall groups of even-age, varying between 110 and 440 
vears. on slopes of moderate pitch, well drained, deep, and of clay loam; parklike stand on poorlv drained 
flat, at elevation of 250 to 300 feet . 
'JtHoquiam, Grays Harbor County, Wash.— Two types; 250-year-old pure stand on moist, well-drained flat, 
at 403 feet elevation, in loamy soil underlain with gravel; 350-year-old stand in mixture on wet poorly 
drained flat, of clayey soil at same elevation. 
Beaver, Clallam County , Wash. — Three hundred-year-old, pure stand in very moist, level, creek basin of 
rich alluvial soil at altitude of 600 feet . 
