IDENTIFIERS

  • Current Taxon Name (Soil Name): Gravois
  • OSD
  • Series Extent
  • User Site ID: 1997MO131074M
  • User Pedon ID: 1997MO131074
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9713139
  • Print Date: 3/2/2025

    • 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: 38.1071944
  • Std. Longitude: -92.5545833
  • Datum: WGS84
  • Township: T39N
  • Range: R15W
  • Section: 22
  • PLSS Details: 1000 feet W and 900 feet S of the NE corner
  • Location Description: Lake of the Ozarks State Park, USGS Toronto quadrangle.
  • Map Unit: 73012—Gravois silt loam, 3 to 8 percent slopes
  • State: Missouri
  • County: MO131—Miller
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO131—Miller County, Missouri

    • PEDON

  • Describers Name: DWW, DEV
  • Current Taxonomic Class: Fine-silty, mixed, active, mesic Aquic Paleudalfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Gravois (flagged as OSD)
  • PSC - 15 to 64 cm.
  • Classificaton Date - 11/4/2014
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Gravois
  • Taxon Kind - series
  • PSC - 15 to 64 cm.
  • Classificaton Date - 8/21/1997
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: slope alluvium over residuum
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/21/1997 (actual site observation date)
  • Air Photo ID: 12A
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    5

    —

    —

    262

    —

    315

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    —
    A—0 to 15 centimeters (0.0 to 5.9 inches); dark grayish brown (10YR 4/2), light brownish gray (10YR 6/2), dry; silt loam; weak fine granular structure; friable; 6.0 fine and medium roots; fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU058401
    Bt1—15 to 30 centimeters (5.9 to 11.8 inches); yellowish brown (10YR 5/6) silt loam; weak fine subangular blocky structure; firm; 6.0 fine and medium roots; 10 percent dark yellowish brown (10YR 4/4), moist, clay films; 10 percent pale brown (10YR 6/3) clay depletions; fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU058402
    Bt2—30 to 46 centimeters (11.8 to 18.1 inches); yellowish brown (10YR 5/6) silty clay loam; moderate fine subangular blocky structure; firm; 3.0 fine roots; 10 percent brown (10YR 4/3), moist, clay films; 10 percent pale brown (10YR 6/3) clay depletions; fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU058403
    Bt3—46 to 64 centimeters (18.1 to 25.2 inches); yellowish brown (10YR 5/6) silty clay loam; moderate fine subangular blocky structure; firm; 3.0 fine roots; 10 percent brown (10YR 4/3), moist, clay films; 10 percent strong brown (7.5YR 5/6) masses of oxidized iron; fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU058404
    2Btx—64 to 89 centimeters (25.2 to 35.0 inches); strong brown (7.5YR 5/6) silty clay loam; weak medium and coarse prismatic parts to weak fine and medium subangular blocky structure; very firm; brittle; 3.0 fine roots between peds; 10 percent dark grayish brown (10YR 4/2), moist, clay films on vertical faces of peds and 10 percent dark grayish brown (10YR 4/2), moist, clay films in root channels and/or pores and 30 percent black (10YR 2/1), moist, manganese or iron-manganese stains; 5 percent yellowish red (5YR 4/6) masses of oxidized iron and 40 percent grayish brown (10YR 5/2) iron depletions; 5 percent by volume 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.3, hellige-truog; gradual smooth boundary. Lab sample # MU058405. This horizon has 30% brittleness. The seams are 3 in. apart. The clay films and roots are in the seams.
    3Bt4—89 to 127 centimeters (35.0 to 50.0 inches); yellowish brown (10YR 5/6) very gravelly silty clay loam; moderate medium subangular blocky structure; firm; 0.9 fine roots; 10 percent dark grayish brown (10YR 4/2), moist, clay films and 10 percent black (10YR 2/1), moist, manganese or iron-manganese stains; 5 percent yellowish red (5YR 4/6) masses of oxidized iron and 40 percent grayish brown (10YR 5/2) iron depletions; 10 percent by volume 75-162-250 millimeter limestone, cherty fragments and 40 percent by volume 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.3, hellige-truog; gradual smooth boundary. Lab sample # MU058406
    4Bt5—127 to 203 centimeters (50.0 to 79.9 inches); red (2.5YR 4/6) very cobbly clay; moderate medium subangular blocky structure; firm; 10 percent black (10YR 2/1) manganese or iron-manganese stains and 30 percent brown (7.5YR 4/3), moist, clay films; 10 percent red (2.5YR 4/8) masses of oxidized iron and 10 percent yellowish red (5YR 4/6) masses of oxidized iron; 20 percent by volume 75-162-250 millimeter limestone, cherty fragments and 30 percent by volume 2-39-75 millimeter limestone, cherty fragments; slightly alkaline, pH 7.5, hellige-truog. Lab sample # MU058407