Detailed Soil Survey of the Mount Revelstoke Summit Area.

Detailed Soil Survey of the Mount Revelstoke Summit Area. Detailed Soil Survey of the Mount Revelstoke Summit Area.

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TABLE 10 . DEGREE AND NATURE OF SOIL LIMITATIONS FOR SELECTED USES . 47Map Unit Camping Areas Picnic Areas Trails Roads & Parking Lots Buildings : no basements Septic Tank Fields Erosion Hazard1/E moderate - slope slight - slope none to slight moderate - slope moderate - slope moderate - slope moderate1/F severe - slope severe - slope moderate - slope severe - slope severe - slope severe - slope moderate to high1/G severe - slope severe - slope severe - slope severe - slope severe - slope severe - slope high2/F severe - slope severe - slope, erosion moderate - slope severe - soil creep, slope severe - soil creep, slope severe - soil creep, slope highhazard2/G severe - slope severe - slope severe - slope, soil creep severe - slope, soil creep severe - slope, soil creep severe - slope, soil creep high2/H severe - slope severe - slope severe - slope, soil creep severe - slope, soil creep severe - slope, snil creep severe - slope high2+R severe - slope, bedrock severe - slope, bedrock severe - slope, bedrock severe - bedrock, slope severe - slope, bedrock severe - bedrock highG(but small usable areasexist)3/C, 3/D moderate to severe - moderate to severe - moderate to severe - moderate to severe - moderate to severe - moderate - wetness,3/E wetness, organic layers wetness, organic layers wetness, organic layers wetness, organic layers wetness, organic layers slope if E3/F severe - wetness, slope, moderate to severe - moderate to severe - severe - wetness, slope, severe - wetness, severe - wetness, slope highorganic layers wetness, slope, organic wetness, organic layers, organic layers organic layerslayersslope3 +5 severe - wetness severe - wetness severe - wetness, organic severe - wetness, organic severe - wetness, organic severe - wetness, slope highlayers layers, slope layers, slope4/B, 4/C severe - wetness, severe - wetness, organic severe - wetness, severe - wetness, organic severe - wetness, severe - high water table nil _flooding, organic layers layers flooding, organic layers layers, frost action flooding, organic layers (depressional)4/D, 4/F very severe - wetness, very severe - wetness, very severe - wetness, very severe - wetness, very severe - wetness, very severe - wetness, highslope, organic layers slope, organic layers organic layers organic layers, slope (F) organic layers, slope slope--57F- very severe - wetness, very severe - wetness, very severe - wetness, very severe - wetness, very severe - wetness, very severe - wetness, highslope, organic layers organic layers, slope organic layers organic layers, slope organic layers, slope slope6/B, 6/C severe - ponding and severe - ponding and severe - ponding and severe - ponding and severe - ponding and severe - ponding nilhummocky surface hunmocky surface hummocky surface frost action frost action (depressional)7/F severe - slope severe - slope moderate - slope, soil severe - slope, soil creep severe - slope, soil creep severe - slope, soil creep highcreep, erosion hazard7/G severe - slope severe - slope severe - slope, soil creep, severe - slope, soil creep severe - slope, soil creep severe - slope, soil creep higherosion hazard7A/G severe - slope severe - slope severe - slope, soil creep, severe - slope, soil creep severe - avalanche hazard, severe - slope, soil creep higherosion and avalanche and avalanche hazard slope, soil creephazard8/C none to slight none to slight none to slight none to slight none to slight none to slight moderateB/E moderate - slope moderate - slope none to slight moderate - slope moderate - slope moderate - slope moderate8/F severe - slope severe - slope moderate - slope severe - slope severe - slope severe - slope high8/G severe - slope severe - slope severe - slope severe - slope severe - slope severe - slope high8+10 severe - slope severe - slope (but small severe - slope severe - slope, shallow severe - slope severe - shallow to highG usable areas exist) to bedrock bedrock, slope8/H severe - slope severe - slope severe - slope severe - slope severe - slope severe - slope high9/E moderate - slope slight - slope none to slight moderate - slope moderate - slope moderate - slope moderate9/F severe - slope severe - slope moderate - slope severe - slope severe - slope severe - slope high9/G severe - slope severe - slope severe - slope severe - slope severe - slope severe - slope high9+R severe - slope, bedrock severe - slope severe - slope, bedrock severe - slope, bedrock severe - slope, bedrock severe - bedrock highG outcrops outcrops outcrops outcrops outcrops, slope9/H severe - slope severe - slope severe - slope severe - slope severe - slope severe - slope t high10/G, 10/H severe - slope severe - slope severe - slope, shallow severe - slope, shallow severe - slope, shallow severe - shallow to highto bedrock to bedrock to bedrock bedrock, slopeR±10, R+10 ravere - bedrock severe.- bedrock severe - slope, bedrock severe - bedrock severe - slope, bedrock severe - bedrock highG H outcrops, slope outcrops, slope outcrops outcrops, slope outcrops outcrops, slope

uildings, and septic tank filter fields .Besides the physical constraintsof steep slopes,soil instability and erosion hazard increasewith slope .Since most of the area is steeply sloping, recreationalfacilities or sites may have to be designed andconstructed in such away as to reduce slope limitations .In addition there are several soilfactors to be considered when choosing sites for development .Bedrock exposures and shallow (less than 50 cm)depths tobedrock are common in the area and are designated as R and map unit 10,respectively, on the soils map . The combination of bedrock exposuresand the accompanying steep slopes results in severe limitations for generalrecreational use in these areas .These areas cannot be levelled forinstallation of facilities except at considerable cost .Soil wetness causes severe limitations to use in soil map units4 and 5 . These soils are poorly to very poorly drainedand are saturatedwith water through mostciated with groundwateror all of the year .discharge, with theWetness is generally assowatertable being at or veryclose to the soil surface .Some areas are also subjecttofloodingduring the peak runoff periods ;all such areas would bevery difficult,if not impossible, to drain .Soils of map units 4 and 5have organicsurface horizons and tend to silt loam textures in lower horizons .Theseproperties contribute to low bearing strength and high erodibility .The soils of map units 3 and 6 are imperfectly drained, beingwet during early season of use .They have severe limitations for use ascamping or picnic areas due to wetness .Soils of map unit 3 have organicsurface horizons and may also have limitations due to slope, whereasthose of map unit 6 have severe limitations due to the hummocky microtopographyof the soil surface .

uildings, and septic tank filter fields .Besides <strong>the</strong> physical constraints<strong>of</strong> steep slopes,soil instability and erosion hazard increasewith slope .Since most <strong>of</strong> <strong>the</strong> area is steeply sloping, recreationalfacilities or sites may have to be designed andconstructed in such away as to reduce slope limitations .In addition <strong>the</strong>re are several soilfactors to be considered when choosing sites for development .Bedrock exposures and shallow (less than 50 cm)depths tobedrock are common in <strong>the</strong> area and are designated as R and map unit 10,respectively, on <strong>the</strong> soils map . The combination <strong>of</strong> bedrock exposuresand <strong>the</strong> accompanying steep slopes results in severe limitations for generalrecreational use in <strong>the</strong>se areas .These areas cannot be levelled forinstallation <strong>of</strong> facilities except at considerable cost .<strong>Soil</strong> wetness causes severe limitations to use in soil map units4 and 5 . These soils are poorly to very poorly drainedand are saturatedwith water through mostciated with groundwateror all <strong>of</strong> <strong>the</strong> year .discharge, with <strong>the</strong>Wetness is generally assowatertable being at or veryclose to <strong>the</strong> soil surface .Some areas are also subjectt<strong>of</strong>loodingduring <strong>the</strong> peak run<strong>of</strong>f periods ;all such areas would bevery difficult,if not impossible, to drain .<strong>Soil</strong>s <strong>of</strong> map units 4 and 5have organicsurface horizons and tend to silt loam textures in lower horizons .Theseproperties contribute to low bearing strength and high erodibility .The soils <strong>of</strong> map units 3 and 6 are imperfectly drained, beingwet during early season <strong>of</strong> use .They have severe limitations for use ascamping or picnic areas due to wetness .<strong>Soil</strong>s <strong>of</strong> map unit 3 have organicsurface horizons and may also have limitations due to slope, whereasthose <strong>of</strong> map unit 6 have severe limitations due to <strong>the</strong> hummocky microtopography<strong>of</strong> <strong>the</strong> soil surface .

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