IDENTIFIERS

  • Current Taxon Name (Soil Name): Coulterville
  • OSD
  • Series Extent
  • User Site ID: 90IL189083
  • User Pedon ID: 90IL189083
  • User Site Association ID: SAS_1 - Clinton & Washington Cty(1990)NSSL PROJECT CP91IL04
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0167
  • NCSS Pedon Lab Data NASIS Record ID - 63214
  • 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: 38.3744444
  • Std. Longitude: -89.4186111
  • Datum: WGS84
  • Township: 2S
  • Range: 3W
  • Section: 10
  • PLSS Details: 2200 feet E and 400 feet S of the NW corner
  • Location Description: 12/02/2008-DRW-This pedon was copied from the NSSL pedon description (s90IL189083) taken in 1990. It is part of the SSL - Project CP91IL041 - CLINTON AND WASHINGTON COUNTY PROJECT. This pedon description was linked to Site Association "SAS - Clinton & Washington Cty (SAS) NSSL PROJECT CP91IL041". To load all the pedons in the site association use the following MLRA 11 Query: "Pedons by Site Association by Site Assoc. ID (waw)". When the prompt comes up just select: Site/Pedon/Site Association Site. Click on apply and in the Nasis Query Parameter type: *SAS*1* , click on apply and all of the pedons in this project will be loaded. This pedon was the 4th of 4 pit descriptions taken on a NE/SW oriented landscape transect on a sodium affected landscape. Soil samples were taken and sent to the NSSL in Lincoln, NE. This pedon was georeferenced using the distances measured from the NW section corner of section 10. These distances were plotted on the Nashville NE Quarter Quad using ArcMap. The plotted point was noted in UTM's using NAD 83, Zone 16. The UTM's were then converted to Latitude/Longitude. (The original Latitude/Longitude do not appear to be as accurate. According to Matt McCauley, who was involved with the project, the Latitude/Longitude were not noted at the time of the description, but were added by someone at a later date.)
  • Map Unit: 882A—Oconee-Darmstadt-Coulterville silt loams, 0 to 2 percent slopes
  • Country: US—United States
  • State: Illinois
  • County: IL189—Washington
  • MLRA: 114—Southern Illinois and Indiana Thin Loess and Till Plain
  • Non-MLRA Soil Survey Area: IL189—Washington County, Illinois
  • 7.5 Minute USGS Quad: 38089-C4—Nashville, Illinois

    • PEDON

  • Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Aeric Epiaqualfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 83
  • Correlated Information:
  • Soil Name - Coulterville
  • Classificaton Date - 12/15/2008
  • Moisture Class - aquic
  • Moisture Subclass - aeric
  • Sampled As Information:
  • Soil Name - Coulterville
  • Classificaton Date - 7/1/1990
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: linear
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1990 (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

    2

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    139

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    Ap—0 to 23 centimeters (0.0 to 9.1 inches); dark grayish brown (10YR 4/2) crushed silt loam; 6 percent sand; 92 percent silt; 2 percent clay; moderate fine and medium granular structure; friable; 2.5 medium roots and 5.5 fine roots; fragments; slightly acid, pH 6.2, pH meter; abrupt smooth boundary. Lab sample # 91P00966. ORIGINAL NOTES: common medium roots; many fine roots; Field pH: 6.8 using Hellige-Truog indicator.
    AE—23 to 33 centimeters (9.1 to 13.0 inches); dark grayish brown (10YR 4/2) and grayish brown (10YR 5/2) silt loam; 8 percent sand; 86 percent silt; 6 percent clay; moderate medium platy structure; friable; 0.5 medium roots and 2.5 fine roots; fragments; moderately acid, pH 5.9, pH meter; clear smooth boundary. Lab sample # 91P00967. ORIGINAL NOTES: few medium roots; common fine roots; Field pH: 6.8 using Hellige-Truog indicator.
    E—33 to 43 centimeters (13.0 to 16.9 inches); grayish brown (10YR 5/2) and pale brown (10YR 6/3) silt loam; 5 percent sand; 88 percent silt; 7 percent clay; moderate medium platy, and weak medium subangular blocky structure; friable; 0.5 medium roots and 2.5 fine roots; 1 percent fine distinct yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; moderately acid, pH 5.6, pH meter; clear smooth boundary. Lab sample # 91P00968. ORIGINAL NOTES: few medium roots; common fine roots; few fine distinct 10YR56 mottles; Field pH: 6.8using Hellige-Truog indicator.
    Bt1—43 to 66 centimeters (16.9 to 26.0 inches); pale brown (10YR 6/3) silty clay; 7 percent sand; 80 percent silt; 13 percent clay; moderate medium angular blocky structure; firm; 5.5 fine roots; 55 percent distinct grayish brown (10YR 5/2), moist, clay films on faces of peds; 1 percent fine distinct brownish yellow (10YR 6/6), moist, masses of oxidized iron; fragments; moderately acid, pH 5.7, pH meter; clear wavy boundary. Lab sample # 91P00969. ORIGINAL NOTES: many clay films surface features on faces of peds; many fine roots; few fine distinct 10YR66 mottles; Field pH: 6.9 using Hellige-Truog indicator.
    Bt2—66 to 94 centimeters (26.0 to 37.0 inches); light olive brown (2.5Y 5/4) silty clay loam; 5 percent sand; 85 percent silt; 10 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; firm; 0.5 fine roots; 37 percent distinct light brownish gray (2.5Y 6/2), moist, clay films on faces of peds; 11 percent fine prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron; fragments; slightly acid, pH 6.4, pH meter; gradual wavy boundary. Lab sample # 91P00970. ORIGINAL NOTES: common clay films surface features on faces of peds; few fine roots; common fine prominent 7.5YR58 mottles; Field pH: 7.3 using Hellige-Truog indicator.
    Btg1—94 to 135 centimeters (37.0 to 53.1 inches); light gray (2.5Y 7/2) silt loam; 5 percent sand; 88 percent silt; 7 percent clay; weak medium prismatic structure; friable; 0.5 fine roots; 15 percent distinct grayish brown (2.5Y 5/2), moist, clay films on faces of peds; 1 percent medium prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron and 11 percent medium prominent brown (7.5YR 4/2), moist, masses of oxidized iron; fragments; neutral, pH 6.9, pH meter; gradual wavy boundary. Lab sample # 91P00971. ORIGINAL NOTES: few clay films surface features on faces of peds; few fine roots; few medium prominent 7.5YR58 mottles; common medium prominent 7.5YR42 mottles; Field pH: 7.5 using Hellige-Truog indicator.
    Btg2—135 to 175 centimeters (53.1 to 68.9 inches); light gray (2.5Y 7/2) silt loam; 9 percent sand; 84 percent silt; 8 percent clay; weak coarse prismatic structure; friable; 0.5 very fine roots; 15 percent distinct light brownish gray (2.5Y 6/2), moist, clay films on faces of peds; medium prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron and 30 percent fine prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron; fragments; neutral, pH 6.7, pH meter; gradual wavy boundary. Lab sample # 91P00972. ORIGINAL NOTES: few clay films surface features on faces of peds; few very fine roots; many fine and medium prominent 7.5YR58 mottles; Field pH: 7.5 using Hellige-Truog indicator.
    Btng—175 to 191 centimeters (68.9 to 75.2 inches); light gray (10YR 7/2) silt loam; 16 percent sand; 71 percent silt; 14 percent clay; weak very coarse prismatic structure; friable; 15 percent faint pale brown (10YR 6/3), moist, clay films on faces of peds; 30 percent medium prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron; fragments; slightly acid, pH 6.5, pH meter. Lab sample # 91P00973. ORIGINAL NOTES: few clay films surface features on faces of peds; many medium prominent 7.5YR58 mottles; Field pH: 7.4 using Hellige-Truog indicator.