IDENTIFIERS

  • Current Taxon Name (Soil Name): SIRDRAK
  • OSD
  • Series Extent
  • User Site ID: 74CA041005 update
  • User Pedon ID: 74CA041005 updated
  • Vegetation Plot ID: 74CA041005 update
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 74C0016
  • NCSS Pedon Lab Data NASIS Record ID - 44777
  • 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: 38.1448894
  • Std. Longitude: -122.9369023
  • Datum: WGS84
  • Location Description: Marin County, California. Approximately 6,000 feet south of Kehoe Ranch Headquarters and 270 feet southeast of Pierce Point Road.
  • Map Unit: 170—Sirdrak sand, 2 to 15 percent slopes
  • State: California
  • County: CA041—Marin
  • MLRA: 15—Central California Coast Range
  • Non-MLRA Soil Survey Area: CA041—Marin County, California
  • 7.5 Minute USGS Quad: 38122-B8—Tomales, California

    • PEDON

  • Describers Name: T. Cook & D. Nettleton
  • Current Taxonomic Class: Sandy, mixed, isomesic Lamellic Haplustepts
  • Current Taxon Kind: taxadjunct
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x then edited
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - SIRDRAK
  • PSC - 25 to 100 cm.
  • Classificaton Date - 11/26/2007
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - ustic
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Baywood
  • Classificaton Date - 4/24/1974
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Runoff: low
  • Drainage Class: somewhat excessively
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/24/1974 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, shrubby
  • 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

    AMSIN

    BRRI8

    ERODI

    LUPIN

    Amsinckia

    Bromus rigidus

    Erodium

    Lupinus

    fiddleneck

    ripgut brome

    stork's bill

    lupine

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

    lamellae

    50—170

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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

    1

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    27.4

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    660

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    A11—0 to 8 centimeters (0.0 to 3.1 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; loamy sand; single grain; loose, loose, nonsticky, nonplastic; 21.0 very fine roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; slightly acid, pH 6.5; clear smooth boundary. Lab sample # 74C00104
    A12—8 to 26 centimeters (3.1 to 10.2 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; loamy sand; single grain; loose, loose, nonsticky, nonplastic; 3.0 very fine roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; moderately acid, pH 6.0; diffuse smooth boundary. Lab sample # 74C00105
    A13—26 to 50 centimeters (10.2 to 19.7 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; sand; single grain; loose, loose, nonsticky, nonplastic; 3.0 very fine roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; moderately acid, pH 6.0; diffuse smooth boundary. Lab sample # 74C00106
    A14—50 to 76 centimeters (19.7 to 29.9 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; sand; single grain; loose, loose, nonsticky, nonplastic; 0.5 very fine roots and 0.5 medium roots and 0.5 fine roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; moderately acid, pH 6.0; diffuse smooth boundary. Lab sample # 74C00107
    A15—76 to 107 centimeters (29.9 to 42.1 inches); dark brown (10YR 3/3), very dark brown (10YR 2/2), moist; sand; single grain; loose, loose, nonsticky, nonplastic; 0.5 very fine roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; moderately acid, pH 6.0; diffuse smooth boundary. Lab sample # 74C00108
    A16—107 to 140 centimeters (42.1 to 55.1 inches); brown (10YR 4/3), very dark brown (10YR 2/2), moist; sand; single grain; loose, loose, nonsticky, nonplastic; 0.1 very fine roots; 21.0 very fine interstitial pores; fragments; moderately acid, pH 6.0; diffuse wavy boundary. Lab sample # 74C00109
    C—140 to 170 centimeters (55.1 to 66.9 inches); yellowish brown (10YR 5/4), brown (7.5YR 4/4), moist; sand; single grain; loose, loose, nonsticky, nonplastic; 21.0 very fine interstitial pores; fragments; moderately acid, pH 6.0. Lab sample # 74C00110