IDENTIFIERS

  • Current Taxon Name (Soil Name): Watsonville
  • OSD
  • Series Extent
  • User Site ID: S1955CA081012
  • User Pedon ID: S1955CA081012
  • Vegetation Plot ID: S1955CA081012
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3012
  • NCSS Pedon Lab Data NASIS Record ID - 38141
  • Print Date: 11/13/2024

    • 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: 37.4413872
  • Std. Longitude: -122.4411087
  • Datum: WGS84
  • Location Description: San Mateo County, California in the San Mateo County SCD, 100 feet north of the end of Rose Avenue at ocean. Just off edge of gully.
  • State: California
  • County: CA081—San Mateo
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA637—San Mateo Area, California

    • PEDON

  • Describers Name: Ralph E. Nelson
  • Current Taxonomic Class: Fine, smectitic, mesic Abruptic Argiaquolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 12
  • Correlated Information:
  • Soil Name - Watsonville
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - aquic
  • Sampled As Information:
  • Soil Name - Watsonville
  • Classificaton Date - 5/19/1955
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: terrace
  • Drainage Class: very poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/19/1955 (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

    AVFA

    DACA3

    LUPIN

    Avena fatua

    Danthonia californica

    Lupinus

    wild oat

    California oatgrass

    lupine

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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

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    21

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    559

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    A11—0 to 23 centimeters (0.0 to 9.1 inches); very dark brown (10YR 2/2), gray (10YR 5/1), dry; loam; weak fine subangular blocky structure; very hard, friable, nonsticky, very plastic; 21.0 roots; 1 percent fine iron-manganese concretions; 1 percent worm casts; fragments; moderately acid, pH 6.0, unspecified; clear smooth boundary. Lab sample # 40A23633. There are fine rock particles of siliceous material scattered throughout this horizon and throughout the entire profile. There are a few fine iron and manganese shot concretions.
    A12—23 to 30 centimeters (9.1 to 11.8 inches); yellowish brown (10YR 5/6) and yellowish brown (10YR 5/8), gray (10YR 5/1) and very dark brown (10YR 2/2), dry; loam; weak fine subangular blocky structure; hard when dry, friable, nonsticky, very plastic; 21 percent fine iron-manganese concretions; fragments; moderately acid, pH 6.0, unspecified; abrupt smooth boundary. Lab sample # 40A23634. There are many fine manganese and iron shot concretions and there is a whitish siliceous coating just above the horizon below.
    B21—30 to 53 centimeters (11.8 to 20.9 inches); dark brown (10YR 3/3) and very dark brown (10YR 2/2), very dark grayish brown (10YR 3/2), dry; clay; strong medium and coarse angular blocky structure; extremely hard, very firm, moderately sticky, very plastic; 0.5 roots; black (10YR 2/1), moist, clay films; fine iron-manganese concretions; fragments; moderately acid, pH 5.8, unspecified; clear smooth boundary. Lab sample # 40A23635. Some fine iron and manganese shot. Few roots down the cracks between the structural aggregates.; continuous - phpvsfiid 196529; continuous - phpvsfiid 196529
    B22—53 to 91 centimeters (20.9 to 35.8 inches); very dark grayish brown (2.5Y 3/2) and yellowish brown (10YR 5/6) and yellowish brown (10YR 5/8), grayish brown (2.5Y 5/2) and brownish yellow (10YR 6/6) and brownish yellow (10YR 6/8), dry; clay; grayish brown (2.5Y 5/2) prominent mottles; moderate medium angular blocky structure; extremely hard, very firm, moderately sticky, very plastic; 0.5 roots; black (10YR 2/1) clay films; fragments; strongly acid, pH 5.5, unspecified; clear smooth boundary. Lab sample # 40A23636. There are a few roots going down cracks between structural aggregates.
    B23—91 to 117 centimeters (35.8 to 46.1 inches); very dark grayish brown (2.5Y 3/2) and dark grayish brown (2.5Y 4/2) and very dark brown (10YR 2/2), dark grayish brown (2.5Y 4/2) and grayish brown (2.5Y 5/2), dry; clay; dark grayish brown (2.5Y 4/2) prominent and grayish brown (2.5Y 5/2) mottles; weak fine and medium angular blocky structure; extremely hard, very firm, moderately sticky, very plastic; clay films on vertical faces of peds; fine iron-manganese concretions; fragments; very strongly acid, pH 5.0, unspecified; clear smooth boundary. Lab sample # 40A23637. There are thin dark clay skins on the vertical faces of the structural aggregates, and numerous fine iron and manganese segregations.
    B3—117 to 137 centimeters (46.1 to 53.9 inches); strong brown (7.5YR 5/6) and strong brown (7.5YR 5/8), light olive brown (2.5Y 5/4) and olive brown (2.5Y 4/4), dry; silty clay; light yellowish brown (2.5Y 6/4) distinct and light olive brown (2.5Y 5/4) and 21 percent fine distinct mottles; weak fine subangular blocky structure; extremely hard, very firm, slightly sticky, very plastic; 0.0 roots; 10 percent light olive brown (2.5Y 5/4) clay films; fragments; very strongly acid, pH 5.0, unspecified; clear smooth boundary. Lab sample # 40A23638
    C—137 to 163 centimeters (53.9 to 64.2 inches); yellowish brown (10YR 5/6) and yellowish brown (10YR 5/8), brownish yellow (10YR 6/6) and brownish yellow (10YR 6/8) and light olive brown (2.5Y 5/4), dry; sandy clay loam; light yellowish brown (2.5Y 6/4) prominent and pale yellow (2.5Y 7/4) mottles; massive; hard when dry, firm, slightly sticky, slightly plastic; fragments; very strongly acid, pH 5.0, unspecified. Lab sample # 40A23639