IDENTIFIERS

  • Current Taxon Name (Soil Name): Okaw
  • OSD
  • Series Extent
  • User Site ID: S1992IL163011
  • User Pedon ID: S1992IL163011
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 92P0581
  • NCSS Pedon Lab Data NASIS Record ID - 64820
  • Print Date: 5/15/2025

    • 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: 38.3880539
  • Std. Longitude: -89.7805557
  • Datum: WGS84
  • Township: 2S
  • Range: 6W
  • Section: 5
  • PLSS Details: 250 feet West and 1800 feet South of the NW corner
  • State: Illinois
  • County: IL163—St. Clair
  • MLRA: 114—Southern Illinois and Indiana Thin Loess and Till Plain
  • Non-MLRA Soil Survey Area: IL163—St. Clair County, Illinois

    • PEDON

  • Describers Name: W.M.M. and D.R.G.
  • Current Taxonomic Class: Fine, smectitic, isothermic Chromic Vertic Albaqualfs
  • Current Taxon Kind: series
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 11
  • Correlated Information:
  • Soil Name - Okaw
  • PSC - 23 to 73 cm.
  • Classificaton Date - 6/15/2007
  • Moisture Class - aquic
  • Sampled As Information:
  • Soil Name - Okaw
  • Taxonomic Class - Fine, montmorillonitic, mesic Typic Albaqualf
  • Taxon Kind - series
  • Classificaton Date - 4/15/1992
  • Moisture Class - aquic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/15/1992 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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

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    —

    123

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    Ap—0 to 23 centimeters (0.0 to 9.1 inches); brown (10YR 4/3) silt loam; 18 percent silt; moderate medium granular, and moderate fine and medium subangular blocky, and moderate medium platy structure; friable; 4.0 fine and medium roots throughout; 51.0 fine and medium high-continuity vesicular and tubular pores; 1 percent fine spherical iron-manganese concretions; fragments; slightly acid, pH 6.4, lamotte-morgan; abrupt smooth boundary. Lab sample # 92P03413. Moderate medium platy structure is from compaction.
    2Btg1—23 to 41 centimeters (9.1 to 16.1 inches); grayish brown (2.5Y 5/2) clay; 67 percent clay; 51 percent red (2.5YR 4/6) fine and medium prominent mottles; weak medium and coarse prismatic, and moderate medium subangular blocky structure; firm; 2.0 very fine and fine roots between peds; 55.0 very fine moderate-continuity interstitial and tubular pores; 51 percent distinct dark grayish brown (10YR 4/2) clay films on faces of peds; 1 percent fine spherical iron-manganese concretions; fragments; moderately acid, pH 5.6, lamotte-morgan; clear wavy boundary. Lab sample # 92P03414. continuous - phpvsfiid 175609; continuous - phpvsfiid 175609
    2Btg2—41 to 56 centimeters (16.1 to 22.0 inches); light brownish gray (2.5Y 6/2) clay; 55 percent clay; 5 percent red (2.5YR 4/6) fine prominent and 35 percent strong brown (7.5YR 5/6) fine and medium prominent mottles; weak very coarse prismatic structure; firm; 1.0 very fine roots between peds; 58.0 very fine low-continuity interstitial and tubular pores; 2 percent prominent light gray (10YR 7/2) skeletans on horizontal faces of peds and 10 percent distinct dark grayish brown (10YR 4/2) clay films in root channels and/or pores; 2 percent fine spherical iron-manganese concretions; fragments; very strongly acid, pH 4.6, lamotte-morgan; clear wavy boundary. Lab sample # 92P03415. discontinuous - phpvsfiid 175610; discontinuous - phpvsfiid 175611; discontinuous - phpvsfiid 175610; discontinuous - phpvsfiid 175611
    2Btg3—56 to 69 centimeters (22.0 to 27.2 inches); light brownish gray (2.5Y 6/2) silty clay; 1 percent red (2.5YR 4/6) fine prominent and 21 percent strong brown (7.5YR 5/8) fine and medium prominent mottles; moderate medium prismatic, and moderate medium angular blocky structure; firm; 1.0 very fine roots between peds; 52.0 very fine low-continuity interstitial and tubular pores; 25 percent distinct dark grayish brown (10YR 4/2) clay films on faces of peds and in pores; 52 percent fine and medium irregular iron-manganese masses; fragments; very strongly acid, pH 4.8, lamotte-morgan; clear wavy boundary. Lab sample # 92P03416. discontinuous - phpvsfiid 175612; discontinuous - phpvsfiid 175612
    2Btg4—69 to 86 centimeters (27.2 to 33.9 inches); light brownish gray (2.5Y 6/2) silty clay loam; 1 percent red (2.5YR 4/6) fine prominent and 5 percent strong brown (7.5YR 4/6) fine prominent and 21 percent strong brown (7.5YR 5/8) fine and medium prominent mottles; weak coarse prismatic structure; firm; 1.0 very fine roots between peds; 54.0 very fine and fine low-continuity interstitial and tubular pores; 5 percent prominent very dark grayish brown (2.5Y 3/2) clay films in root channels and/or pores and 13 percent distinct dark grayish brown (2.5Y 4/2) clay films on faces of peds and in pores; 6 percent fine and medium irregular iron-manganese masses; fragments; moderately acid, pH 5.9, lamotte-morgan; clear smooth boundary. Lab sample # 92P03417. discontinuous - phpvsfiid 175613; discontinuous - phpvsfiid 175614; discontinuous - phpvsfiid 175613; discontinuous - phpvsfiid 175614
    2Btg5—86 to 104 centimeters (33.9 to 40.9 inches); light brownish gray (2.5Y 6/2) clay loam; 30 percent clay; 1 percent red (2.5YR 4/6) fine prominent and 21 percent yellowish brown (10YR 5/6) fine and medium prominent mottles; weak coarse prismatic structure; friable; 1.0 very fine roots between peds; 51.0 very fine low-continuity interstitial and tubular pores; 3 percent prominent very dark grayish brown (2.5Y 3/2) clay films in root channels and/or pores; 6 percent fine and medium irregular iron-manganese masses and 7 percent fine and medium irregular masses of oxidized iron; fragments; neutral, pH 6.8, lamotte-morgan; gradual smooth boundary. Lab sample # 92P03418. discontinuous - phpvsfiid 191820; discontinuous - phpvsfiid 191820
    2Btg6—104 to 119 centimeters (40.9 to 46.9 inches); gray (10YR 6/1) sandy clay loam; 10 percent yellowish brown (10YR 5/6) fine prominent and 21 percent dark yellowish brown (10YR 4/4) medium prominent mottles; weak very coarse prismatic structure; friable; 1.0 very fine roots between peds; 51.0 very fine low-continuity interstitial and tubular pores; 3 percent prominent very dark grayish brown (2.5Y 3/2) clay films in root channels and/or pores and 5 percent distinct dark grayish brown (10YR 4/2) clay films on faces of peds and in pores; 6 percent medium irregular iron-manganese masses and 7 percent medium irregular masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # 92P03419. discontinuous - phpvsfiid 191821; discontinuous - phpvsfiid 191822; discontinuous - phpvsfiid 191821; discontinuous - phpvsfiid 191822
    2Btg7—119 to 135 centimeters (46.9 to 53.1 inches); light brownish gray (2.5Y 6/2) sandy loam; 25 percent sand; 5 percent reddish yellow (7.5YR 6/8) fine prominent and 15 percent yellowish red (5YR 4/6) medium prominent and 20 percent light yellowish brown (10YR 6/4) fine and medium prominent mottles; weak very coarse prismatic structure; friable; 1.0 very fine roots between peds; 5 percent distinct dark grayish brown (2.5Y 4/2) clay films in root channels and/or pores; 6 percent medium irregular iron-manganese masses and 7 percent medium irregular masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # 92P03420. discontinuous - phpvsfiid 191823; discontinuous - phpvsfiid 191823
    2Btg8—135 to 165 centimeters (53.1 to 65.0 inches); light brownish gray (2.5Y 6/2) stratified sandy clay loam; 25 percent clay; 5 percent brown (7.5YR 4/4) fine and medium prominent and 10 percent olive (5Y 5/6) fine and medium prominent and 25 percent light yellowish brown (10YR 6/4) coarse prominent mottles; friable; 1.0 very fine roots between peds; 2 percent distinct grayish brown (10YR 5/2) clay films in root channels and/or pores; 6 percent medium irregular iron-manganese masses and 6 percent medium irregular masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # 92P03421. three inches sandy strata (SL textures); remainder of strata range in thickness of 1/2 to 3 inches and textures are much less sandy (loam & SCL textures).; discontinuous - phpvsfiid 191824; discontinuous - phpvsfiid 191824
    2Btg9—165 to 183 centimeters (65.0 to 72.0 inches); light gray (2.5Y 7/2) sandy clay loam; 15 percent brown (7.5YR 4/4) coarse prominent and 20 percent yellowish red (5YR 5/8) medium and coarse prominent and 26 percent yellowish brown (10YR 5/6) fine and medium prominent mottles; weak coarse prismatic parts to weak medium angular blocky structure; friable; 1.0 very fine roots between peds; 2 percent distinct light brownish gray (2.5Y 6/2) clay films in root channels and/or pores; 5 percent fine irregular masses of oxidized iron and 10 percent fine and medium irregular iron-manganese masses; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # 92P03422. discontinuous - phpvsfiid 191825; discontinuous - phpvsfiid 191825
    2Bt10—183 to 191 centimeters (72.0 to 75.2 inches); yellowish brown (10YR 5/4) loamy sand; 10 percent strong brown (7.5YR 5/8) coarse prominent and 15 percent gray (10YR 6/1) medium and coarse faint and 15 percent dark yellowish brown (10YR 4/6) coarse prominent mottles; weak medium subangular blocky structure; very friable; 2 percent distinct dark yellowish brown (10YR 4/4) clay films on faces of peds; 2 percent fine irregular masses of oxidized iron; fragments; neutral, pH 6.8, lamotte-morgan; abrupt smooth boundary. Lab sample # 92P03423. patchy - phpvsfiid 191826; patchy - phpvsfiid 191826
    2Bt11—191 to 206 centimeters (75.2 to 81.1 inches); pale brown (10YR 6/3) loam; 5 percent brownish yellow (10YR 6/8) coarse prominent and 20 percent light yellowish brown (10YR 6/4) fine and medium faint mottles; weak coarse prismatic structure; friable; 2 percent distinct dark brown (7.5YR 3/4) clay films on faces of peds and 2 percent distinct light brownish gray (2.5Y 6/2) clay films on faces of peds; 2 percent fine irregular masses of oxidized iron and 2 percent fine irregular iron-manganese masses; fragments; abrupt smooth boundary. Lab sample # 92P03424. discontinuous - phpvsfiid 191828; patchy - phpvsfiid 191827; discontinuous - phpvsfiid 191828; patchy - phpvsfiid 191827
    3C1—206 to 234 centimeters (81.1 to 92.1 inches); dark yellowish brown (10YR 3/4) and light brownish gray (2.5Y 6/2) stratified loamy sand to silt loam; 10 percent strong brown (7.5YR 5/8) medium prominent and 10 percent brown (7.5YR 4/4) coarse prominent mottles; very friable; 2 percent fine irregular iron-manganese masses and 2 percent fine irregular masses of oxidized iron; fragments; neutral, pH 6.8, lamotte-morgan; abrupt smooth boundary. Lab sample # 92P03425
    3C2—234 to 251 centimeters (92.1 to 98.8 inches); light brownish gray (2.5Y 6/2) and very pale brown (10YR 7/3) stratified loamy sand to silt loam; 10 percent strong brown (7.5YR 5/8) medium prominent and 10 percent brown (7.5YR 4/4) coarse prominent mottles; very friable; 2 percent fine irregular iron-manganese masses and 2 percent fine irregular masses of oxidized iron; fragments; neutral, pH 6.8, lamotte-morgan; clear smooth boundary. Lab sample # 92P03426
    3C3—251 to 262 centimeters (98.8 to 103.1 inches); brownish yellow (10YR 6/6) sand; 30 percent very pale brown (10YR 7/3) coarse distinct mottles; loose; 2 percent fine irregular iron-manganese masses and 2 percent fine irregular masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan; abrupt smooth boundary. Lab sample # 92P03427
    3C4—262 to 272 centimeters (103.1 to 107.1 inches); light brownish gray (2.5Y 6/2) and light yellowish brown (2.5Y 6/3) silt loam, stratified sand; 5 percent yellowish brown (10YR 5/8) medium distinct and 10 percent very pale brown (10YR 7/3) coarse distinct and 30 percent light yellowish brown (10YR 6/4) coarse faint mottles; very friable; 2 percent fine irregular iron-manganese masses and 2 percent fine irregular masses of oxidized iron; fragments; neutral, pH 6.8, lamotte-morgan; abrupt smooth boundary. Lab sample # 92P03428
    3C5—272 to 295 centimeters (107.1 to 116.1 inches); brownish yellow (10YR 6/6) sand; 30 percent very pale brown (10YR 7/3) coarse distinct mottles; loose; 2 percent fine irregular iron-manganese masses and 2 percent fine irregular masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan. Lab sample # 92P03429