IDENTIFIERS

  • Current Taxon Name (Soil Name): Willows
  • OSD
  • Series Extent
  • User Site ID: 93CA011007
  • User Pedon ID: 93CA011007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 94P0058
  • NCSS Pedon Lab Data NASIS Record ID - 66248
  • Print Date: 11/21/2024

    • 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: 39.2097222
  • Std. Longitude: -122.0647222
  • Datum: WGS84
  • Location Description: 3 miles west of the town of Colusa. 2200 feet north and 2250 feet west of the southeast corner, Section 27, T.16N., R.2W.
  • State: California
  • MLRA: 17—Sacramento and San Joaquin Valleys

    • PEDON

  • Describers Name: Wayne Sheldon, Susan Southard
  • Current Taxonomic Class: Fine, smectitic, thermic Sodic Endoaquerts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: research site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Willows
  • Classificaton Date - 11/26/2007
  • Moisture Class - aquic
  • Moisture Subclass - xeric
  • Sampled As Information:
  • Soil Name - Wekoda High
  • Classificaton Date - 9/24/1993
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: silty and clayey alluvium
  • Landscape: basin
  • Landform: flood plain
  • Anthropogenic Feature: leveled land
  • Geomorphic Component Flats: flat
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: very poorly
  • Flooding: frequent flooding
  • Geology: Sacramento Valley Alluvium formation.
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/24/1993 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    slickensides

    —

    —-
    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

    —

    —

    47

    —

    180

    391

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    Colusa 1 SSW

    —
    Ap1—0 to 12 centimeters (0.0 to 4.7 inches); very dark gray (10YR 3/1), gray (10YR 5/1), dry; silty clay loam; 38 percent clay; strong fine and medium granular structure; very hard, firm, moderately sticky, moderately plastic; 4.0 very fine roots throughout; 30.0 interstitial pores; fragments; very slight effervescence; moderately alkaline, pH 8.3, hellige-truog; abrupt smooth boundary. Lab sample # 94P0501. Polygon #15.
    Ap2—12 to 25 centimeters (4.7 to 9.8 inches); very dark gray (10YR 3/1), gray (10YR 5/1), dry; silty clay loam; 38 percent clay; strong coarse and very coarse angular blocky parts to strong medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine and fine low-continuity tubular pores; 20 percent pressure faces on faces of peds; 1 percent fine spherical noncoherent cemented black (10YR 2/1) iron-manganese concretions throughout; fragments; very slight effervescence; moderately alkaline, pH 8.3, hellige-truog; clear smooth boundary. Lab sample # 94P0502. Polygon #16.
    Bw—25 to 42 centimeters (9.8 to 16.5 inches); dark grayish brown (10YR 4/2), grayish brown (10YR 5/2), dry; silty clay loam; 40 percent clay; moderate and strong coarse angular blocky parts to strong fine and medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine and fine low-continuity tubular pores; 20 percent pressure faces on faces of peds and 20 percent distinct clay films on faces of peds and in pores; 1 percent fine spherical noncoherent cemented black (10YR 2/1) iron-manganese concretions throughout; fragments; very slight effervescence; moderately alkaline, pH 8.3, hellige-truog; clear smooth boundary. Lab sample # 94P0503. Polygon #17.
    Bssy1—42 to 62 centimeters (16.5 to 24.4 inches); dark brown (10YR 3/3), brown (10YR 5/3), dry; silty clay loam; 40 percent clay; moderate and strong coarse angular blocky parts to strong fine and medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine and fine low-continuity tubular pores; 20 percent pressure faces on faces of peds and 20 percent distinct clay films on faces of peds and in pores; 2 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 20 percent fine irregular noncoherent cemented gypsum threads; fragments; very slight effervescence; moderately alkaline, pH 8.4, hellige-truog; clear wavy boundary. Lab sample # 94P0504. Polygon #18.
    Bssy2—62 to 101 centimeters (24.4 to 39.8 inches); brown (10YR 4/3), brown (10YR 5/3), dry; silty clay loam; 40 percent clay; strong coarse angular blocky parts to strong medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 20 percent distinct clay films on faces of peds and in pores and 50 percent slickensides (pedogenic) throughout; 2 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 20 percent fine irregular noncoherent cemented gypsum threads; fragments; very slight effervescence; strongly alkaline, pH 8.5, hellige-truog; clear smooth boundary. Lab sample # 94P0505. Polygon #19.
    Bssy3—101 to 150 centimeters (39.8 to 59.1 inches); brown (10YR 4/3), brown (10YR 5/3), dry; silty clay loam; 38 percent clay; gray (10YR 6/1) and yellow (2.5Y 7/6) fine and 2 percent light gray (10YR 7/1) fine and 5 percent olive yellow (2.5Y 6/6) fine mottles; strong medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 very fine and fine low-continuity tubular pores; 50 percent slickensides (pedogenic) throughout; 5 percent fine irregular noncoherent cemented gypsum masses; fragments; very slight effervescence; strongly alkaline, pH 8.5, hellige-truog; gradual wavy boundary. Lab sample # 94P0506. Polygon #20.
    Bssy4—150 to 187 centimeters (59.1 to 73.6 inches); brown (10YR 4/3), brown (10YR 5/3), dry; silty clay loam; 38 percent clay; gray (10YR 6/1) and yellow (2.5Y 7/6) fine and 2 percent light gray (10YR 7/1) fine and 5 percent olive yellow (2.5Y 6/6) fine mottles; strong medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 interstitial pores; 50 percent slickensides (pedogenic) throughout; 10 percent fine irregular noncoherent cemented gypsum threads; fragments; very slight effervescence; strongly alkaline, pH 8.5, hellige-truog; gradual wavy boundary. Lab sample # 94P0507. Polygon #21.
    Bss—187 to 206 centimeters (73.6 to 81.1 inches); dark yellowish brown (10YR 4/4), yellowish brown (10YR 5/4), dry; silty clay loam; 35 percent clay; gray (10YR 6/1) and yellow (2.5Y 7/6) fine and 2 percent light gray (10YR 7/1) fine and 5 percent olive yellow (2.5Y 6/6) fine mottles; strong medium angular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 interstitial pores; 50 percent slickensides (pedogenic) throughout; fragments; very slight effervescence; strongly alkaline, pH 8.5, hellige-truog. Lab sample # 94P0508. Polygon #22.