IDENTIFIERS

  • Current Taxon Name (Soil Name): Tahoma
  • OSD
  • Series Extent
  • User Site ID: 99CA693-005
  • User Pedon ID: S99CA061003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 00P0045
  • NCSS Pedon Lab Data NASIS Record ID - 11553
  • 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: 39.1876861
  • Std. Longitude: -120.1599250
  • Datum: WGS84
  • Map Unit: 7222—Tahoma-Jorge complex, 2 to 15 percent slopes
  • Non-MLRA Soil Survey Area: CA693—Tahoe Basin Area, California and Nevada

    • PEDON

  • Describers Name: LA, FFF
  • Current Taxonomic Class: Fine, isotic, frigid Alfic Haploxerands
  • Current Taxon Kind: series
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Tahoma
  • PSC - 5 to 105 cm.
  • Classificaton Date - 10/7/2005
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Tahoma
  • Classificaton Date - 9/16/1999
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from andesite over residuum weathered from andesite
  • Landform: mountain
  • Surface Fragments: 20.00 percent nonflat 2- to 75-millimeter andesite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/16/1999 (actual site observation date)
  • Air Photo ID: 2
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - conifers
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    —

    —

    2122

    —

    90

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 5 centimeters (0.0 to 2.0 inches); slightly decomposed plant material; fragments.
    A—5 to 10 centimeters (2.0 to 3.9 inches); brown (10YR 4/3), very dark grayish brown (10YR 3/2), moist; extremely gravelly sandy loam; 65 percent sand; 26 percent silt; 9 percent clay; weak very fine granular, and weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 5.0 very fine roots and 1.0 medium roots and 0.1 fine roots; 63 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary.; moderately dry when described;
    Bw1—10 to 30 centimeters (3.9 to 11.8 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; very gravelly sandy loam; 60 percent sand; 30 percent silt; 10 percent clay; weak medium subangular blocky, and weak very fine granular, and weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 3.0 very fine roots and 5.0 medium roots and 1.0 fine roots; 40 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary.; moderately dry when described;
    Bw2—30 to 64 centimeters (11.8 to 25.2 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; very cobbly sandy loam; 60 percent sand; 30 percent silt; 10 percent clay; weak very fine granular, and weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; 1.0 very coarse roots and 3.0 medium roots and 0.5 fine roots and 1.0 coarse roots; 5 percent by volume nonflat 250-?-600 millimeter andesite fragments and 10 percent by volume nonflat 75-?-250 millimeter andesite fragments and 30 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.3, hellige-truog; abrupt wavy boundary.; moderately dry when described;
    Bt1—64 to 102 centimeters (25.2 to 40.2 inches); brown (7.5YR 4/4), brown (7.5YR 4/3), moist; gravelly clay loam; 40 percent sand; 28 percent silt; 32 percent clay; massive; hard, very firm, moderately sticky, moderately plastic; 1.0 medium roots and 0.1 fine roots; 5 percent by volume nonflat 75-?-250 millimeter andesite fragments and 24 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.2, hellige-truog; diffuse smooth boundary.; slightly dry when described;
    Bt2—102 to 152 centimeters (40.2 to 59.8 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; clay loam; 25 percent sand; 40 percent silt; 35 percent clay; massive; hard, very firm, moderately sticky, moderately plastic; 0.1 fine roots; 5 percent by volume nonflat 2-?-75 millimeter andesite fragments; slightly acid, pH 6.2, hellige-truog.; slightly moist when described;