IDENTIFIERS

  • Current Taxon Name (Soil Name): Okaw
  • OSD
  • Series Extent
  • User Site ID: 1968IL199001
  • User Pedon ID: 1968IL199001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - IL SCL
  • Lab Pedon # - 68IL199001
  • NCSS Pedon Lab Data NASIS Record ID - 20669
  • 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: 37.8367732
  • Std. Longitude: -89.0024926
  • Datum: WGS84
  • Township: 8S
  • Range: 2E
  • Section: 8
  • PLSS Details: 1370 feet north and 50 feet west of southeast corner
  • Location Description: 500 feet north and 50 feet west of southeast corner of above southeast 10 which is bound by road on east
  • State: Illinois
  • County: IL199—Williamson
  • Non-MLRA Soil Survey Area: IL199—Williamson County, Illinois
  • 7.5 Minute USGS Quad: 37089-G1—Herrin, Illinois

    • PEDON

  • Describers Name: JBF, CJF, SBD
  • Current Taxonomic Class: Fine, smectitic, mesic Chromic Vertic Albaqualfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: PedonPC
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Okaw
  • PSC - 25 to 75 cm.
  • Classificaton Date - 7/10/2009
  • Moisture Class - aquic
  • Sampled As Information:
  • Soil Name - Okaw
  • Classificaton Date - 8/1/1968
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: lacustrine
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/1/1968 (actual site observation date)
  • Air Photo ID:
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Yield Study ID -
    • 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

    0.5

    —

    —

    115

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2) silt loam; weak fine granular structure; friable; 25 percent very dark brown (10YR 2/2), moist, iron-manganese concretions; fragments; moderately acid, pH 5.8; abrupt smooth boundary. Lab sample # IL21145
    A2—18 to 25 centimeters (7.1 to 9.8 inches); light gray (10YR 7/2) silt loam; moderate fine platy structure; friable; 25 percent very dark brown (10YR 2/2), moist, iron-manganese concretions; fragments; very strongly acid, pH 4.7; abrupt smooth boundary. Lab sample # IL21146
    B2&A2—25 to 30 centimeters (9.8 to 11.8 inches); grayish brown (2.5Y 5/2) silty clay loam; moderate medium subangular blocky structure; firm; light gray (10YR 7/2), moist, organoargillans on all faces of peds; 10 percent iron-manganese concretions; fragments; very strongly acid, pH 4.7; abrupt smooth boundary. Lab sample # IL21147
    B21—30 to 51 centimeters (11.8 to 20.1 inches); grayish brown (10YR 5/2) silty clay; weak subangular blocky, and moderate fine granular structure; firm; 10 percent fine iron-manganese concretions; fragments; very strongly acid, pH 4.7; clear smooth boundary. Lab sample # IL21148
    B22—51 to 69 centimeters (20.1 to 27.2 inches); grayish brown (10YR 5/2) silty clay; weak coarse subangular blocky, and moderate fine granular structure; firm; 10 percent fine iron-manganese concretions; fragments; very strongly acid, pH 4.7; gradual smooth boundary. Lab sample # IL21149
    B23—69 to 86 centimeters (27.2 to 33.9 inches); brown (10YR 5/3) silty clay; weak coarse angular blocky, and moderate fine granular structure; firm; 10 percent iron-manganese concretions; fragments; very strongly acid, pH 4.7; gradual smooth boundary. Lab sample # IL21150
    B3—86 to 122 centimeters (33.9 to 48.0 inches); brown (10YR 4/3) silty clay; weak coarse angular blocky, and weak fine granular structure; firm; 1 percent iron-manganese concretions; fragments; strongly acid, pH 5.3; diffuse boundary. Lab sample # IL21151
    C—122 to 142 centimeters (48.0 to 55.9 inches); dark grayish brown (10YR 4/2) silty clay; 25 percent grayish brown (2.5Y 5/2) mottles; weak coarse angular blocky, and massive; firm; fine very dark brown (10YR 2/2), moist, iron-manganese concretions; fragments; moderately acid, pH 5.8. Lab sample # IL21152