IDENTIFIERS

  • Current Taxon Name (Soil Name): COHASSET
  • OSD
  • Series Extent
  • User Site ID: S1964-CA-49-016x
  • User Pedon ID: 64-CA-49-016x
  • Vegetation Plot ID: S1964-CA-49-016x
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - UCDAVIS
  • Lab Pedon # - UCD6449016
  • NCSS Pedon Lab Data NASIS Record ID - 42058
  • Print Date: 11/11/2024

    • 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: 38.6884613
  • Std. Longitude: -122.6547165
  • Datum: WGS84
  • Township: 10N
  • Range: 7N
  • Section: 29
  • PLSS Details: NE/4
  • Map Unit: CmF—Cohasset gravelly clay loam, 10 to 50 percent slopes, MLRA 15
  • State: California
  • County: CA097—Sonoma
  • MLRA: 15—Central California Coast Range
  • Non-MLRA Soil Survey Area: CA097—Sonoma County, California
  • 7.5 Minute USGS Quad: 38122-F6—Mount Saint Helena, California

    • PEDON

  • Describers Name: BFS
  • Current Taxonomic Class: Fine-loamy, mixed, mesic Ultic Haploxeralfs
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Cohasset
  • Classificaton Date - 3/7/2016
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Cohasset
  • Taxonomic Class - Fine-loamy, mixed, mesic Ultic Haploxeralfs
  • Taxon Kind - series
  • Classificaton Date - 1/26/2009
  • Moisture Class - xeric
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: RES
  • Landform: middle third hill
  • Slope Complexity: simple
  • Drainage Class: well
  • Bedrock: tuff, unspecified
  • Geology: St Helena formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/26/2009 (entry creation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • 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

    QUKE

    Quercus kelloggii

    California black oak

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    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

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    74 -

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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

    31

    —

    —

    762

    —

    338

    1778

    —

    —

    13.9

    —

    —

    —

    —

    —

    —

    —

    —

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    A1—0 to 23 centimeters (0.0 to 9.1 inches); brown (7.5YR 5/4), reddish brown (5YR 4/4), moist; gravelly clay loam; weak medium granular structure; soft, very friable, nonsticky, nonplastic; 3.0 very fine roots throughout and 3.0 fine roots throughout; 3.0 fine tubular pores; 5 percent by volume indurated 2-35-75 millimeter unspecified fragments; slightly acid, pH 6.5; diffuse smooth boundary. Lab sample # UCD03225
    B21t—23 to 48 centimeters (9.1 to 18.9 inches); light brown (7.5YR 6/4), 50 percent dark reddish brown (5YR 3/4) and 50 percent 5YR 3/6 (5YR 3/6), moist; gravelly clay loam; massive; soft, very friable, moderately sticky, nonplastic; 0.5 medium roots throughout and 0.5 fine roots throughout; 3.0 fine tubular pores; 30 percent clay films; 10 percent by volume indurated 2-35-75 millimeter unspecified fragments; moderately acid, pH 6.0; gradual smooth boundary. Lab sample # UCD03226
    B22t—48 to 74 centimeters (18.9 to 29.1 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; gravelly clay loam; massive; slightly hard, friable, moderately sticky, moderately plastic; 0.5 medium roots throughout; 21.0 fine tubular pores; 75 percent clay films on surfaces along pores; 20 percent by volume indurated 2-35-75 millimeter unspecified fragments; strongly acid, pH 5.5; gradual wavy boundary. Lab sample # UCD03227
    Cr—74 to 74 centimeters (29.1 to 29.1 inches); fragments. Lab sample # UCD03228