Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

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252 Soil Survey Slope: 8 to 35 percent Elevation: 4,200 to 6,000 feet Effective annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Surface layer texture: Loam Depth to bedrock (lithic): 10 to 20 inches Drainage class: Well drained Parent material: Residuum weathered from calcareous sandstone Native plant cover type: Rangeland Available water capacity: Mainly 2.9 inches Amor and similar soils Composition: 40 percent Geomorphic description: • Base slope backslope on hill • Base slope footslope on hill • Side slope backslope on hill Slope: 8 to 35 percent Elevation: 4,200 to 6,000 feet Effective annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Surface layer texture: Loam Depth to bedrock (paralithic): 20 to 40 inches Drainage class: Well drained Parent material: Loamy residuum weathered from sandstone and siltstone Native plant cover type: Rangeland Available water capacity: Mainly 6.1 inches Additional Components Macar and similar soils: 5 percent Castner and similar soils: 3 percent Cabba and similar soils: 2 percent Management For management information about this map unit, see appropriate sections in Part II of this publication. 310E—Winspect-Ticell complex, 15 to 35 percent slopes Setting Elevation: 5,300 to 6,200 feet Mean annual precipitation: 17 to 20 inches Frost-free period: 70 to 90 days Major Component Description Winspect and similar soils Composition: 60 percent Geomorphic description: • Base slope footslope on hill • Base slope toeslope on hill Slope: 15 to 35 percent Elevation: 5,300 to 6,200 feet Effective annual precipitation: 17 to 20 inches Frost-free period: 70 to 90 days Surface layer texture: Cobbly loam Drainage class: Well drained Parent material: Gravelly glaciofluvial deposits Native plant cover type: Rangeland Available water capacity: Mainly 6.5 inches Ticell and similar soils Composition: 30 percent Geomorphic description: • Nose slope summit on hill • Nose slope shoulder on hill Slope: 15 to 35 percent Elevation: 5,300 to 6,200 feet Effective annual precipitation: 17 to 20 inches Frost-free period: 70 to 90 days Surface layer texture: Loam Depth to bedrock (lithic): 10 to 20 inches Drainage class: Well drained Parent material: Residuum weathered from calcareous sandstone Native plant cover type: Rangeland Available water capacity: Mainly 2.9 inches Additional Components Amor and similar soils: 6 percent Ticell, stony and similar soils: 3 percent Winspect, bouldery and similar soils: 1 percent Management For management information about this map unit, see appropriate sections in Part II of this publication. 311C—Roy, extremely stony-Turner complex, 2 to 8 percent slopes Setting Elevation: 4,200 to 6,000 feet Mean annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Major Component Description Roy and similar soils Composition: 65 percent Geomorphic description: Tread on stream terrace Slope: 0 to 4 percent Elevation: 4,200 to 6,000 feet Effective annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Surface layer texture: Gravelly clay loam
Sweet Grass County Area, Montana—Part I 253 Rock fragments on the soil surface: 3 to 15 percent stones, 2 to 3 feet apart Drainage class: Well drained Parent material: Gravelly alluvium Native plant cover type: Rangeland Available water capacity: Mainly 4.5 inches Turner and similar soils Composition: 30 percent Geomorphic description: Tread on stream terrace Slope: 2 to 8 percent Elevation: 4,200 to 6,000 feet Effective annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Surface layer texture: Sandy clay loam Rock fragments on the soil surface: 3 to 15 percent stones, 2 to 3 feet apart Drainage class: Well drained Parent material: Loamy over sandy and gravelly alluvium Native plant cover type: Rangeland Available water capacity: Mainly 4.9 inches Additional Components Turner, seeped and similar soils: 5 percent Management For management information about this map unit, see appropriate sections in Part II of this publication. 312D—Vershal very channery loam, 2 to 15 percent slopes Setting Field investigation intensity: Order 2 Elevation: 4,200 to 6,000 feet Mean annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Major Component Description Vershal and similar soils Composition: 85 percent Geomorphic description: Knoll and plain Slope: 2 to 15 percent Elevation: 4,200 to 6,000 feet Effective annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Surface layer texture: Very channery loam Depth to bedrock (lithic): 4 to 10 inches Drainage class: Well drained Parent material: Residuum weathered from sandstone Native plant cover type: Rangeland Available water capacity: Mainly 0.6 inches Additional Components Cabba and similar soils: 3 percent Castner and similar soils: 3 percent Ticell and similar soils: 3 percent Amor and similar soils: 2 percent Doney and similar soils: 2 percent Rock outcrop: 2 percent Management For management information about this map unit, see appropriate sections in Part II of this publication. 312F—Vershal very channery loam, 15 to 60 percent slopes Setting Field investigation intensity: Order 2 Elevation: 4,200 to 6,000 feet Mean annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Major Component Description Vershal and similar soils Composition: 85 percent Geomorphic description: • Nose slope summit on escarpment • Nose slope shoulder on escarpment Slope: 15 to 60 percent Elevation: 4,200 to 6,000 feet Effective annual precipitation: 15 to 19 inches Frost-free period: 85 to 115 days Surface layer texture: Very channery loam Depth to bedrock (lithic): 4 to 10 inches Drainage class: Well drained Parent material: Residuum weathered from sandstone Native plant cover type: Rangeland Available water capacity: Mainly 0.6 inches Additional Components Amor and similar soils: 4 percent Castner and similar soils: 4 percent Wayden and similar soils: 4 percent Rock outcrop: 3 percent Management For management information about this map unit, see appropriate sections in Part II of this publication.
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How to Use This Soil Survey Detaile
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iii Contents Part I How To Use This
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v Winkler Series...................
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vii 184D—Absarokee-Shambo loams,
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ix 274C—Work clay loam, 4 to 8 pe
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xi 371E—Whitlash cobbly sandy loa
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xiii 448B—Attewan loam, 0 to 4 pe
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xv 424E—Bridger, very stony-Adel
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xvii 359F—Fifer-Cheadle-Monaberg
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xix 369E—Rentsac-Tanna complex, 1
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xxi M-W—Water, miscellaneous ....
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xxv Foreword This soil survey conta
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2 Soil Survey The Lewis and Clark E
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4 Soil Survey 10,000 and 11,500 fee
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6 Soil Survey subsurface folding in
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8 Soil Survey interbeds. It is over
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10 Soil Survey Creek, approximately
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12 Soil Survey disappears during mi
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14 Soil Survey Temperature and Prec
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16 Growing Season (Recorded in the
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18 Soil Survey these organisms die,
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20 Soil Survey great group is ident
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22 Soil Survey firm, very sticky, v
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24 Soil Survey few very fine and fi
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26 Soil Survey moderate fine granul
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28 Soil Survey very friable, slight
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30 Soil Survey Range in Characteris
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32 Soil Survey Depth to the Cr hori
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34 Soil Survey Chroma: 2 to 4 Textu
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36 Soil Survey Texture (less than 2
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38 Soil Survey Clay content: 40 to
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40 Soil Survey Taxonomic Class: Fin
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42 Soil Survey Chroma: 1 or 2 Redox
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44 Soil Survey Chroma: 2 or 3 Textu
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48 Soil Survey Typical Pedon Cambet
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50 Soil Survey flagstones; slightly
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52 Soil Survey Cg2—30 to 34 inche
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54 Soil Survey prismatic structure
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56 Soil Survey Bt horizons Hue: 2.5
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60 Soil Survey sec. 24, T. 4 N., R.
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62 Soil Survey Oi—0 to 1 inch; sl
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64 Soil Survey Reed Point topograph
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66 Soil Survey Bk3 horizon Hue: 7.5
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68 Soil Survey lining pores; 10 per
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70 Soil Survey slightly plastic; ma
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72 Soil Survey moderate coarse pris
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74 Soil Survey subangular blocky st
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76 Soil Survey moderate medium and
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80 Soil Survey Bk1—12 to 19 inche
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82 Soil Survey Bw—11 to 19 inches
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84 Soil Survey Parent material: Cla
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86 Soil Survey brown (10YR 5/4) moi
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88 Soil Survey Chroma: 2 or 3 Textu
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90 Soil Survey A horizon Hue: 10YR
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94 Soil Survey Range in Characteris
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96 Soil Survey peds and lining pore
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98 Soil Survey slightly alkaline (p
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100 Soil Survey Calcium carbonate e
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102 Soil Survey Range in Characteri
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104 Soil Survey Landform: Fan and m
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106 Soil Survey Chroma: 2 or 3 Text
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108 Soil Survey Content of rock fra
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110 Soil Survey Cgk3—49 to 60 inc
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112 Soil Survey A2—7 to 13 inches
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114 Soil Survey medium subangular b
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116 Soil Survey very hard, firm, ve
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118 Soil Survey Reedwest Series Dep
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120 Soil Survey A—0 to 7 inches;
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122 Soil Survey Elevation range: 4,
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124 Soil Survey C horizon Hue: 10YR
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126 Soil Survey Texture (less than
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130 Soil Survey Mean annual air tem
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132 Soil Survey Typical Pedon Soapc
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136 Soil Survey moderately sticky,
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138 Soil Survey Bt2 horizon Hue: 7.
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140 Soil Survey A horizon Hue: 10YR
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142 Soil Survey Tibson Series Depth
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144 Soil Survey Oi—0 to 1 inch; s
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146 Soil Survey Bt1—5 to 11 inche
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148 Soil Survey Elevation range: 5,
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150 Soil Survey 2Bk—21 to 60 inch
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152 Soil Survey A—2 to 5 inches;
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154 Soil Survey Typical Pedon Weedz
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156 Soil Survey common fine to coar
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158 Soil Survey E1—4 to 12 inches
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160 Soil Survey Permeability: Moder
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162 Soil Survey Texture (less than
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173 Detailed Soil Map Units The map
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Sweet Grass County Area, Montana—
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327 References Alexander, R.R., 196
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329 Glossary Ablation till. Loose,
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Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart

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