SOIL SURVEY
SOIL SURVEY SOIL SURVEY
ure 102 .tte of the pedon chosen tocharacterize the WR 2 ma punit . The slope is 45 to 55% ,and evidence of snow avalanchingis evident in the photo .gore 103 .Orthic Regosol soil chosen tocharacterize the WR2 map unit .The loose nature of the profil eand the abundance of flat coars efragments is typical of this ma punit .
-145-The stoniness and periodic snow avalanching which are generally associate dwith this map unit result in a very severe limitation for most recreational and engineeringuses .WR 3 Map Unit (Orthic and Cumulic Regosols )This map unit is characterized by those soils which have developed o ncalcareous, stratified, gravelly to very gravelly fan alluvium overlain by mediu mtextured deposits . Silt loam and fine sandy loam textures with about 5% coarsefragments are common in the medium textured surficial deposit while gravelly sand yloam and gravelly loamy sand textures are common in the lower horizons . Thes esoils have weak horizon development although a thin (less than 5 cm thick) B mhorizon is sometimes present .Table 55 . Brief description of the pedon chosen to characterize the WR3 map unit .HorizonL-F 3-0Depth Moist Color(cm)Est . Coars eFragments Textur e(%)very dark brown; partially decomposedneedles and leave sAe 0-1 gray not sample dpH(CaCI 2)Organi cMatter(%)6 .0 47ACk 1-4 brown < 5 sandy loam 7 .2 1 4Ckl 4-40 light gray < 1 silt loam 7 .3 trac every gravell yCk2 40-90 gray 60 loamy coarse 7 .2 trac esandCk3 90-110+ pale olive 10 silt loam trac eOrthic Regoso lThe generally silty surficial texture results in moderate limitations for mos trecreational uses . In addition, the Regosolic nature of these soils suggests that the yare subject to occasional stream channel shifting and/or overland flow during sprin grunoff .
- Page 111 and 112: Site of the pedon chosen to charact
- Page 113 and 114: -95-Table 29 . Brief description of
- Page 115 and 116: -97-NI1 Map Unit (Lithic Orthic Eut
- Page 117 and 118: -99-Figure 62 . Site of the pedon c
- Page 119 and 120: -101 -EnvironmentThe Ogden soilscap
- Page 121 and 122: -103-Table 33 . Brief description o
- Page 123 and 124: -105-Table 34 . Brief description o
- Page 125 and 126: -107-Figure 70 . Site of the pedon
- Page 127 and 128: Figure 73 . Degraded Eutric Bruniso
- Page 129 and 130: _ • _- - ~ . -. n- C . 1 - r IFig
- Page 131 and 132: -113-YpiFigure 76, Site of the pedo
- Page 133 and 134: -115-Figure 78 . Site of the pedon
- Page 135 and 136: -117-OP 1 Map Unit (Cumilic Regosol
- Page 137 and 138: -119-OT - Otterhead Soi Iscape Grou
- Page 139 and 140: ure 82 . Site of the pedon chosen t
- Page 141 and 142: -123-Table 44 . Key criteria differ
- Page 143 and 144: -125-SI2 Map Unit (Lithic Humo - Fe
- Page 145 and 146: -127-Landform and Parent Material s
- Page 147 and 148: -129-Table 47 . Brief description o
- Page 149 and 150: Figure 91 . Site of the pedon chose
- Page 151 and 152: -133-Environmen tzones .The Tocher
- Page 153 and 154: -135--The steep slopes and the rela
- Page 155 and 156: -137-Table 50 . Brief description o
- Page 157 and 158: Figure 97 .Site of the pedon chosen
- Page 159 and 160: -141 -EnvironmentThe Watchtower soi
- Page 161: -143-Table 53 . Brief description o
- Page 166 and 167: Brief description of the pedon chos
- Page 168 and 169: -150-late snowmelt areas or streams
- Page 170 and 171: -152-The soils have been rated acco
- Page 172 and 173: -154-Table 58 . Guides for assessin
- Page 174 and 175: -156-Table 60. Guides for assessing
- Page 176 and 177: -158-Table 62. Guides for assessing
- Page 178 and 179: -160-Table 64 . Guides for assessin
- Page 180 and 181: -162-Table 66 . Frost design soil c
- Page 182 and 183: Table 67r Interpretations for selec
- Page 184 and 185: (cont . )Table 67: Interpretations
- Page 186 and 187: -168-(cont . )Table 67 : Interpreta
- Page 188 and 189: -170-GLOSSARY'AASHO classification
- Page 190 and 191: -172-Clay films (skins) - Oriented
- Page 192 and 193: -174-Field capacity - The percentag
- Page 194 and 195: -176-Humification - The process by
- Page 196 and 197: -178-Mechanical analyses - See part
- Page 198 and 199: - :180-Permeability, soil - The eas
- Page 200 and 201: -182-Slump - A landslide characteri
- Page 202 and 203: -184-organic carbon, or both .BC -R
- Page 204 and 205: -186-Granular - More or less rounde
- Page 206 and 207: -188-Unified Soil Classification Sy
- Page 208 and 209: -190-Bei I, C .E . 1966 . An ecolog
- Page 210 and 211: -192-Hutchinson, D . E . 1976. Reso
ure 102 .tte of the pedon chosen tocharacterize the WR 2 ma punit . The slope is 45 to 55% ,and evidence of snow avalanchingis evident in the photo .gore 103 .Orthic Regosol soil chosen tocharacterize the WR2 map unit .The loose nature of the profil eand the abundance of flat coars efragments is typical of this ma punit .
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