IDENTIFIERS

  • Current Taxon Name (Soil Name): Courville
  • OSD
  • Series Extent
  • User Site ID: S2002MT618001
  • User Pedon ID: 99MT029003
  • Vegetation Plot ID: S2002MT618001
  • User Site Association ID: MT618-40E-BOLDPEAK-1
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 02N0577
  • NCSS Pedon Lab Data NASIS Record ID - 14673
  • Print Date: 1/30/2025

    • LOCATION

  • Location In Web Soil Survey
  • AOI is roughly a square mile and pedon is marked in the center.
  • Location in SoilWeb
  • Location in Google Maps
  • Std. Latitude: 47.9122772
  • Std. Longitude: -114.7339172
  • Datum: WGS84
  • Township: 25N
  • Range: 24W
  • Section: 19
  • PLSS Details: 2000 feet south and 1000 feet west of NW corner
  • Map Unit: 40E—Rumblecreek-Courville complex, dry, 15 to 30 percent slopes
  • State: Montana
  • County: MT029—Flathead
  • MLRA: 43A—Northern Rocky Mountains
  • Non-MLRA Soil Survey Area: MT618—Flathead County Area and Part of Lincoln County, Montana

    • PEDON

  • Describers Name: Tia Leschin
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, frigid Vitrandic Haplustalfs
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Courville
  • Taxonomic Class - Fine-loamy, mixed, superactive, frigid Vitrandic Haplustalfs
  • PSC - 41 to 91 cm.
  • Classificaton Date - 9/24/1999
  • Soil Taxonomic Edition - eighth edition
  • Moisture SUBClass - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: volcanic ash over non-calcareous till
  • Landscape: glaciated mountains
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: lower third
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Drainage Class: well
  • Flooding: none flooding
  • Bedrock: quartzite
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/24/1999 (actual site observation date)
  • Air Photo ID: 618-16C
  • Plant Association Name: PSME/ SYAL
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CAGE2

    CARU

    FEID

    FECA4

    AMAL2

    ARUV

    MARE11

    SPBE2

    SYAL

    ANRA

    PIPO

    PSME

    Carex geyeri

    Calamagrostis rubescens

    Festuca idahoensis

    Festuca campestris

    Amelanchier alnifolia

    Arctostaphylos uva-ursi

    Mahonia repens

    Spiraea betulifolia

    Symphoricarpos albus

    Antennaria racemosa

    Pinus ponderosa

    Pseudotsuga menziesii

    Geyer's sedge

    pinegrass

    Idaho fescue

    rough fescue

    Saskatoon serviceberry

    kinnikinnick

    creeping barberry

    white spirea

    common snowberry

    raceme pussytoes

    ponderosa pine

    Douglas-fir

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    argillic horizon

    41—135

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    Setting and Climate
    Slope Slope Length USLE Upslope Length Elev. Corr. Elev Aspect MAP REAP FFD MAAT MSAT MWAT MAST MSST MWST MFFP PE Index Climate Station ID Climate Station Name Climate Station Type
    % m degrees mm mm C mm

    27

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    1109

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    160

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    Oi—0 to 3 centimeters (0.0 to 1.2 inches); fragments; abrupt smooth boundary.; moderately dry when described; observed in cut
    A—3 to 5 centimeters (1.2 to 2.0 inches); dark grayish brown (10YR 4/2) crushed, very dark brown (10YR 2/2) crushed, moist; gravelly loam; 10 percent clay; weak very fine granular structure; soft, very friable, slightly sticky, slightly plastic; moderate permeability; 10.0 very fine roots throughout and 4.0 medium roots throughout; 10.0 very fine low-continuity tubular and 4.0 medium low-continuity tubular pores; 5 percent by volume nonflat subrounded 75-163-250 millimeter mixed fragments and 15 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; moderately acid, pH 6.0; clear smooth boundary.; dry when described; observed in cut
    Bw—5 to 25 centimeters (2.0 to 9.8 inches); light yellowish brown (10YR 6/4) broken face, dark yellowish brown (10YR 4/4) broken face, moist; gravelly loam; 12 percent clay; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine roots throughout and 1.0 medium roots throughout; 3.0 very fine low-continuity tubular and 1.0 medium low-continuity tubular pores; 10 percent by volume nonflat subrounded 75-163-250 millimeter mixed fragments and 20 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.2; clear smooth boundary. Lab sample # 02N02861; moderately dry when described; observed in cut
    2E—25 to 41 centimeters (9.8 to 16.1 inches); pale yellow (2.5Y 8/3) broken face, light yellowish brown (2.5Y 6/4) broken face, moist; gravelly silt loam; 18 percent clay; moderate fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; moderate permeability; 3.0 very fine roots throughout and 1.0 medium roots throughout; 3.0 very fine low-continuity tubular and 1.0 medium low-continuity tubular pores; 10 percent by volume nonflat subrounded 75-163-250 millimeter mixed fragments and 20 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0; clear smooth boundary. Lab sample # 02N02862; slightly dry when described; observed in cut
    2Bt/E—41 to 64 centimeters (16.1 to 25.2 inches); 75 percent light yellowish brown (2.5Y 6/4) broken face, 75 percent olive brown (2.5Y 4/4) broken face, moist; gravelly clay loam; 31 percent clay; strong fine and medium angular blocky structure; hard, firm, moderately sticky, slightly plastic; moderate permeability; 10.0 very fine roots throughout and 3.0 medium roots throughout; 10.0 very fine low-continuity tubular and 5.0 medium low-continuity tubular pores; 26 percent distinct clay films between sand grains; 10 percent by volume nonflat subrounded 75-163-250 millimeter mixed fragments and 20 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; 75 percent of Bt; 25 percent of E; noneffervescent, by hcl, 1n; neutral, pH 7.2; gradual wavy boundary. Lab sample # 02N02863; slightly moist when described; observed in cut. patchy - phpvsfiid 242122; patchy - phpvsfiid 242122
    2Bt/E—41 to 64 centimeters (16.1 to 25.2 inches); 25 percent pale yellow (2.5Y 8/4) broken face, 25 percent light yellowish brown (2.5Y 6/4) broken face, moist; gravelly clay loam; 31 percent clay; strong fine and medium angular blocky structure; hard, firm, moderately sticky, slightly plastic; moderate permeability; 10.0 very fine roots throughout and 3.0 medium roots throughout; 10.0 very fine low-continuity tubular and 5.0 medium low-continuity tubular pores; 10 percent by volume nonflat subrounded 75-163-250 millimeter mixed fragments and 20 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; 75 percent of Bt; 25 percent of E; noneffervescent, by hcl, 1n; neutral, pH 7.2; gradual wavy boundary. Lab sample # 02N02863; slightly moist when described; observed in cut
    2Bt—64 to 135 centimeters (25.2 to 53.1 inches); pink (7.5YR 7/4) broken face, brown (7.5YR 5/4) broken face, moist; silty clay loam; 37 percent clay; strong medium angular blocky structure; hard, firm, moderately sticky, moderately plastic; moderate permeability; 10.0 very fine roots throughout and 3.0 medium roots throughout; 10.0 very fine low-continuity tubular and 5.0 medium low-continuity tubular pores; 26 percent distinct clay films on surfaces along pores; 10 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4; gradual wavy boundary. Lab sample # 02N02864; moist when described; observed in cut. patchy - phpvsfiid 242123; patchy - phpvsfiid 242123
    2Btk1—135 to 173 centimeters (53.1 to 68.1 inches); yellow (2.5Y 7/6) broken face, olive yellow (2.5Y 6/6) broken face, moist; clay loam; 30 percent clay; moderate medium angular blocky structure; hard, firm, moderately sticky, moderately plastic; moderate permeability; 10.0 very fine roots throughout and 1.0 medium roots throughout; 10.0 very fine low-continuity tubular and 1.0 medium low-continuity tubular pores; 26 percent distinct clay films on surfaces along pores; 2 percent fine faint irregular carbonate masses lining pores; 10 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; very slight effervescence, by hcl, 1n; slightly alkaline, pH 7.6; gradual wavy boundary. Lab sample # 02N02865; moist when described; observed in cut. patchy - phpvsfiid 242124; patchy - phpvsfiid 242124
    2Btk2—173 to 183 centimeters (68.1 to 72.0 inches); very pale brown (10YR 8/4) broken face, brownish yellow (10YR 6/6) broken face, moist; silty clay loam; 34 percent clay; weak very fine angular blocky structure; hard, firm, moderately sticky, moderately plastic; moderate permeability; 10.0 very fine low-continuity tubular and 1.0 medium low-continuity tubular and pores; 26 percent distinct clay films on surfaces along pores; 2 percent fine faint irregular carbonate masses lining pores; 10 percent by volume nonflat subrounded 2-39-75 millimeter mixed fragments; slight effervescence, by hcl, 1n; slightly alkaline, pH 7.6. Lab sample # 02N02866; moist when described; observed in cut. patchy - phpvsfiid 242125; patchy - phpvsfiid 242125