IDENTIFIERS

  • Current Taxon Name (Soil Name): Trabuco
  • OSD
  • Series Extent
  • User Site ID: S1968CA057029
  • User Pedon ID: S1968CA057029
  • Vegetation Plot ID: S1968CA057029
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 68C0116
  • NCSS Pedon Lab Data NASIS Record ID - 43571
  • Print Date: 11/23/2024

    • 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: 39.2550011
  • Std. Longitude: -121.1958313
  • Datum: WGS84
  • Township: 16N
  • Range: 7E
  • Section: 9
  • PLSS Details: 600 feet north of N 1/4 corner
  • Location Description: 1,400 feet NNW of intersection of Pleasant Valley and Beckman Hill Roads; 8 1/2 miles NW of Grass Valley, California.
  • State: California
  • County: CA057—Nevada
  • MLRA: 22A—Sierra Nevada and Tehachapi Mountains
  • Non-MLRA Soil Survey Area: CA619—Nevada County Area, California

    • PEDON

  • Describers Name: George Staidl and Lynn Brittan.
  • Current Taxonomic Class: Fine, mixed, active, thermic Typic Argixerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 29
  • Correlated Information:
  • Soil Name - Trabuco
  • PSC - 25 to 76 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Trabuco
  • Classificaton Date - 9/4/1968
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/4/1968 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    QUDO

    QUERC

    Quercus douglasii

    Quercus

    blue oak

    oak

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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

    6

    —

    —

    396

    —

    270

    889

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    16.1

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    AP1—0 to 10 centimeters (0.0 to 3.9 inches); fragments. Lab sample # 68C00874
    AP—0 to 10 centimeters (0.0 to 3.9 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/3), moist; loam; moderate medium and coarse prismatic structure; hard when dry, friable, moderately sticky, moderately plastic; 3.0 very fine roots; 3.0 very fine interstitial and tubular pores; fragments; moderately acid, pH 6.0, hellige-truog; abrupt wavy boundary. Lab sample # 68C00865
    A12—10 to 25 centimeters (3.9 to 9.8 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/3), moist; loam; weak medium and coarse prismatic structure; hard when dry, friable, slightly sticky, moderately plastic; 3.0 very fine to medium roots; 3.0 very fine interstitial and tubular pores; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 68C00866
    B1T—25 to 38 centimeters (9.8 to 15.0 inches); reddish brown (5YR 4/4), dark reddish brown (2.5YR 3/4), moist; clay loam; weak medium and coarse prismatic structure; hard when dry, friable, moderately sticky, moderately plastic; 3.0 very fine to medium roots; 3.0 very fine interstitial and tubular and 0.5 fine tubular pores; 30 percent clay films in root channels and/or pores; fragments; moderately acid, pH 6.0, hellige-truog; abrupt wavy boundary. Lab sample # 68C00867
    B21T—38 to 74 centimeters (15.0 to 29.1 inches); dark red (2.5YR 3/6), dark reddish brown (2.5YR 3/4), moist; clay; moderate coarse prismatic parts to moderate coarse angular blocky structure; hard when dry, firm, moderately sticky, very plastic; 3.0 very fine to coarse roots and 3.0 medium and coarse roots; 3.0 very fine tubular pores; clay films on faces of peds and in pores; fragments; moderately acid, pH 6.0, hellige-truog; clear wavy boundary. Lab sample # 68C00868. continuous - phpvsfiid 188706; continuous - phpvsfiid 188706
    B22T—74 to 102 centimeters (29.1 to 40.2 inches); dark red (2.5YR 3/6), dark reddish brown (2.5YR 3/4), moist; clay; moderate coarse prismatic parts to moderate coarse angular blocky structure; hard when dry, firm, moderately sticky, very plastic; 0.5 very fine and fine roots; 3.0 very fine tubular pores; clay films on faces of peds and in pores; fragments; moderately acid, pH 6.0, hellige-truog; clear irregular boundary. Lab sample # 68C00869. Mica and other mineral grains apparent.; continuous - phpvsfiid 188707; continuous - phpvsfiid 188707
    B31T—102 to 140 centimeters (40.2 to 55.1 inches); dark red (2.5YR 3/6), dark reddish brown (2.5YR 3/4), moist; clay; moderate coarse angular blocky structure; hard when dry, firm, slightly sticky, very plastic; 0.5 very fine to medium roots; 3.0 very fine tubular pores; 75 percent clay films on faces of peds and in pores; fragments; moderately acid, pH 5.8, hellige-truog; gradual wavy boundary. Lab sample # 68C00870. Mica and other mineral grains apparent.
    B32T—140 to 170 centimeters (55.1 to 66.9 inches); yellowish red (5YR 4/6), dark reddish brown (2.5YR 3/4), moist; clay loam; moderate coarse angular blocky structure; hard when dry, firm, slightly sticky, very plastic; 0.5 very fine to medium roots; 0.5 very fine tubular pores; 75 percent clay films on faces of peds and in pores; fragments; moderately acid, pH 5.8, hellige-truog; gradual wavy boundary. Lab sample # 68C00871. Mica and other mineral grains apparent.
    C1—170 to 203 centimeters (66.9 to 79.9 inches); yellowish red (5YR 5/6) and red (2.5YR 5/6), yellowish red (5YR 4/6) and red (2.5YR 4/6), moist; loam; massive; very hard, firm, slightly sticky, slightly plastic; 30 percent clay films in root channels and/or pores and 30 percent clay bridges; fragments; slightly acid, pH 6.5, hellige-truog; gradual wavy boundary. Lab sample # 68C00872
    C2—203 to 234 centimeters (79.9 to 92.1 inches); yellowish red (5YR 5/6) and red (2.5YR 5/6), yellowish red (5YR 4/6) and red (2.5YR 4/6), moist; loam; massive; slightly hard, friable, slightly sticky, slightly plastic; 10 percent clay films in root channels and/or pores and 75 percent clay films on faces of peds and in pores; fragments; slightly acid, pH 6.3, hellige-truog. Lab sample # 68C00873