IDENTIFIERS

  • Current Taxon Name (Soil Name): Webile
  • OSD
  • Series Extent
  • User Site ID: S1972CA013009
  • User Pedon ID: S1972CA013009
  • Vegetation Plot ID: S1972CA013009
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 72C0094
  • NCSS Pedon Lab Data NASIS Record ID - 44028
  • Print Date: 2/17/2025

    • LOCATION

  • Township: 1N
  • Range: 4E
  • Section: 19
  • PLSS Details: SW 1/4 NW 1/4 SE 1/4
  • Location Description: 2800 feet east of main drain and 800 feet south of Indian Slough
  • Map Unit: Wa—Webile muck
  • State: California
  • County: CA013—Contra Costa
  • MLRA: 16—California Delta
  • Non-MLRA Soil Survey Area: CA013—Contra Costa County, California
  • 7.5 Minute USGS Quad: 37121-H5—Woodward Island, California

    • PEDON

  • Describers Name: Grant Kennedy, W.D. Nettleton, David Maurer, Lawrence Welch
  • Current Taxonomic Class: Clayey, mixed, euic, thermic Terric Haplosaprists
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Pedon #: 9
  • Correlated Information:
  • Soil Name - Webile (flagged as OSD)
  • Classificaton Date - 3/22/2016
  • Classifier - Ed Tallyn
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - aquic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Webile
  • Taxonomic Class - Clayey, mixed, euic, thermic Terric Medisaprists
  • Taxon Kind - series
  • Classificaton Date - 9/29/1972
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: mixed alluvium derived from mixed and/or grassy organic material
  • Runoff: very low
  • Drainage Class: very poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/29/1972 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ASPAR

    SOLY2

    ZEMA

    Asparagus

    Solanum lycopersicum

    Zea mays

    asparagus

    garden tomato

    corn

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    histic epipedon

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    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

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    —

    —

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    356

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    —

    —

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    15.6

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    Oap1—0 to 22 centimeters (0.0 to 8.7 inches); black (10YR 2/1) and black (10YR 2/1) rubbed muck; weak very fine granular structure; slightly hard, slightly sticky, nonplastic; fragments; very strongly acid, pH 4.6, pH meter 1:2 calcium chloride; gradual smooth boundary. Lab sample # 72C00582
    Oap2—22 to 41 centimeters (8.7 to 16.1 inches); very dark brown (10YR 2/2) and very dark brown (10YR 2/2) rubbed muck; weak very coarse angular blocky structure; slightly hard, slightly sticky, nonplastic; fragments; very strongly acid, pH 4.6, pH meter 1:2 calcium chloride; clear smooth boundary. Lab sample # 72C00583
    Oa3—41 to 72 centimeters (16.1 to 28.3 inches); dark yellowish brown (10YR 4/4) and very dark brown (10YR 2/2) rubbed muck; weak coarse platy structure; fragments; very strongly acid, pH 4.6, pH meter 1:2 calcium chloride; gradual smooth boundary. Lab sample # 72C00584
    C1—72 to 75 centimeters (28.3 to 29.5 inches);, gray (10YR 5/1), dry; mucky silt loam; fragments. Lab sample # 72C00585
    Oa4—75 to 88 centimeters (29.5 to 34.6 inches);, very dark brown (10YR 2/2) rubbed and dark yellowish brown (10YR 3/4), dry; muck; weak coarse platy structure; very friable, slightly sticky, nonplastic; fragments; very strongly acid, pH 4.6, pH meter 1:2 calcium chloride; gradual smooth boundary. Lab sample # 72C00586
    Oa5—88 to 97 centimeters (34.6 to 38.2 inches);, dark yellowish brown (10YR 3/4) and very dark brown (10YR 2/2) rubbed, dry; muck; weak coarse platy structure; very friable, slightly sticky, nonplastic; fragments; very strongly acid, pH 4.6, pH meter 1:2 calcium chloride; gradual smooth boundary. Lab sample # 72C00587
    Oa6—97 to 108 centimeters (38.2 to 42.5 inches);, very dark brown (10YR 2/2) rubbed and dark yellowish brown (10YR 4/4), dry; muck; massive; friable, slightly sticky, slightly plastic; fragments; very strongly acid, pH 5.0, pH meter 1:2 calcium chloride; clear smooth boundary. Lab sample # 72C00588
    2C1—108 to 122 centimeters (42.5 to 48.0 inches);, 10 percent 2.5Y 7/5 (2.5Y 7/5) oxidized and very dark gray (N 3/0), dry; clay; massive; firm, very sticky, moderately plastic; fragments; slightly acid, pH 6.1, pH meter 1:2 calcium chloride; gradual smooth boundary. Lab sample # 72C00589
    2C2—122 to 160 centimeters (48.0 to 63.0 inches);, dark gray (N 4/0), dry; clay; massive; firm, very sticky, moderately plastic; fragments; neutral, pH 7.0, pH meter 1:2 calcium chloride. Lab sample # 72C00590