IDENTIFIERS

  • Current Taxon Name (Soil Name): Okaw
  • OSD
  • Series Extent
  • User Site ID: 1979IL145003
  • User Pedon ID: 1979IL145003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - IL SCL
  • Lab Pedon # - 79IL145003
  • NCSS Pedon Lab Data NASIS Record ID - 21151
  • Print Date: 4/24/2025

    • 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: 37.9522241
  • Std. Longitude: -89.1992545
  • Datum: WGS84
  • Township: 6S
  • Range: 1W
  • Section: 34
  • Location Description: 18 steps N of county line, 20 steps W of E quarter line
  • State: Illinois
  • County: IL145—Perry
  • MLRA: 113—Central Claypan Areas
  • Non-MLRA Soil Survey Area: IL145—Perry County, Illinois
  • 7.5 Minute USGS Quad: 37089-H2—Elkville, Illinois

    • PEDON

  • Current Taxonomic Class: Fine, smectitic, mesic Chromic Vertic Albaqualfs
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: PedonPC
  • Pedon #: 3
  • Correlated Information:
  • Soil Name - Okaw
  • PSC - 48 to 98 cm.
  • Classificaton Date - 1/4/2010
  • Moisture Class - aquic
  • Sampled As Information:
  • Soil Name - Wynoose
  • Classificaton Date - 6/1/1979
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: Peoria loess
  • Landscape: upland
  • Runoff: negligible
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1979 (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 -
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—43

    48—86

    —-

    —-
    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

    1

    —

    —

    119

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 13 centimeters (0.0 to 5.1 inches); dark grayish brown (10YR 4/2) silt loam; moderate fine granular structure; friable; 10 percent faint very dark grayish brown (10YR 3/2), moist, clay films on all faces of peds; 1 percent fine prominent 10YR 2.5/1 (10YR 2.5/1), moist, iron-manganese concretions in matrix; fragments; neutral, pH 7.0; abrupt smooth boundary. Lab sample # IL26625; observed in push tube. patchy - phpvsfiid 481384; patchy - phpvsfiid 481384
    A21—13 to 23 centimeters (5.1 to 9.1 inches); dark gray (10YR 4/1) silt loam; 1 percent dark brown (7.5YR 3/2) medium prominent and 25 percent yellowish red (5YR 5/6) medium prominent mottles; moderate fine platy structure; friable; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL26626; observed in push tube
    A22—23 to 33 centimeters (9.1 to 13.0 inches); gray (10YR 5/1) silt loam; 25 percent brown (7.5YR 4/4) medium prominent mottles; weak medium platy structure; friable; fragments; moderately acid, pH 5.8; abrupt smooth boundary. Lab sample # IL26627; observed in push tube
    A23—33 to 43 centimeters (13.0 to 16.9 inches); light brownish gray (10YR 6/2) silt loam; 10 percent yellowish brown (10YR 5/6) medium distinct mottles; weak medium platy parts to weak medium granular structure; friable; 1 percent fine prominent brown (7.5YR 4/2), moist, masses of oxidized iron in matrix; fragments; very strongly acid, pH 4.7; abrupt irregular boundary. Lab sample # IL26628; observed in push tube
    B&A—43 to 48 centimeters (16.9 to 18.9 inches); gray (10YR 5/1) silty clay; 10 percent red (2.5YR 5/8) medium prominent mottles; moderate fine subangular blocky structure; firm; distinct light gray (10YR 7/2), moist, silt coats on all faces of peds; fragments; very strongly acid, pH 4.7; abrupt smooth boundary. Lab sample # IL26629; observed in push tube. discontinuous - phpvsfiid 481386; discontinuous - phpvsfiid 481386
    B21t—48 to 69 centimeters (18.9 to 27.2 inches); grayish brown (10YR 5/2) silty clay; 10 percent yellowish brown (10YR 5/6) medium distinct mottles; moderate medium prismatic parts to moderate medium subangular blocky structure; firm; 25 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; fragments; extremely acid, pH 4.0; clear smooth boundary. Lab sample # IL26630; observed in push tube. discontinuous - phpvsfiid 481387; discontinuous - phpvsfiid 481387
    B22t—69 to 86 centimeters (27.2 to 33.9 inches); light brownish gray (10YR 6/2) silty clay; 25 percent yellowish brown (10YR 5/6) medium distinct mottles; weak medium prismatic parts to weak medium subangular blocky structure; firm; 10 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; 1 percent fine distinct dark gray (10YR 4/1), moist, iron-manganese concretions in matrix; fragments; extremely acid, pH 4.0; clear smooth boundary. Lab sample # IL26631; observed in push tube. patchy - phpvsfiid 481385; patchy - phpvsfiid 481385
    B3—86 to 130 centimeters (33.9 to 51.2 inches); light brownish gray (10YR 6/2) silty clay loam; 25 percent brown (7.5YR 4/4) medium prominent mottles; weak coarse prismatic structure; firm; 10 percent medium prominent black (10YR 2/1), moist, iron-manganese concretions in matrix; fragments; extremely acid, pH 4.0; gradual smooth boundary. Lab sample # IL26632; observed in push tube
    C—130 to 152 centimeters (51.2 to 59.8 inches); pale red (2.5YR 6/2) silty clay loam; 25 percent yellowish brown (10YR 5/8) coarse prominent mottles; structureless massive; friable; fragments; slightly acid, pH 6.3. Lab sample # IL26633; observed in push tube