IDENTIFIERS

  • Current Taxon Name (Soil Name): Tillas
  • OSD
  • Series Extent
  • User Site ID: 07CA605175
  • User Pedon ID: 07CA605175
  • Vegetation Plot ID: 07CA605175
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 08N0240
  • NCSS Pedon Lab Data NASIS Record ID - 20127
  • Print Date: 12/11/2024

    • 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: 41.9313889
  • Std. Longitude: -124.1588889
  • Datum: WGS84
  • Location Description: Del Norte County; near the town of Smith River.
  • Map Unit: 259—Tillas, 0 to 2 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA605—Humboldt and Del Norte Area, California
  • 7.5 Minute USGS Quad: 41124-H2—Smith River, California

    • PEDON

  • Describers Name: Alaina Frazier & Joe Seney
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, mesic Cumulic Humudepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 175
  • Correlated Information:
  • Soil Name - Tillas
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/3/2012
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Tillas
  • Classificaton Date - 8/16/2007
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium derived from mixed sources
  • Landscape: alluvial plain
  • Landform: alluvial fan
  • Hill Slope Profile: backslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: well
  • Bedrock: mixed
  • Geology: Alluvium formation.
  • Surface Fragments: 2.00 percent nonflat subrounded indurated 2- to 75-millimeter mixed,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/16/2007 (actual site observation date)
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • 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

    BROMU

    LOLIU

    TRIFO

    Bromus

    Lolium

    Trifolium

    brome

    ryegrass

    clover

    —

    —

    —

    —

    —

    —

    —

    —

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

    umbric epipedon

    cambic horizon

    0—93

    112—200

    —93—

    —88—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    8/16/2007

    50

    —

    20
    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

    2

    —

    —

    13

    —

    182

    2030

    —

    300

    12

    14

    8

    —

    —

    —

    —

    —

    —

    —

    —
    Ap1—0 to 35 centimeters (0.0 to 13.8 inches); very dark grayish brown (2.5Y 3/2) broken face, grayish brown (2.5Y 5/2) broken face, dry; gravelly clay loam; 28 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; hard, very firm, moderately sticky, moderately plastic; moderately slow permeability; 7.0 very fine roots and 2.0 fine roots; 2.0 very fine tubular and 1.0 very fine irregular and 2.0 fine tubular pores; 20 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; strongly acid, pH 5.2, pH indicator strip; clear smooth boundary. Lab sample # 08N01485; slightly moist when described; observed in pit, small
    Ap2—35 to 62 centimeters (13.8 to 24.4 inches); dark olive brown (2.5Y 3/3) broken face, olive brown (2.5Y 4/3) broken face, dry; gravelly clay loam; 30 percent clay; weak fine subangular blocky, and moderate medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderately slow permeability; 5.0 very fine roots and 1.0 fine roots; 4.0 very fine tubular and 1.0 fine tubular pores; 15 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; strongly acid, pH 5.5, pH indicator strip; clear wavy boundary. Lab sample # 08N01486; slightly moist when described; observed in pit, small
    Ap3—62 to 93 centimeters (24.4 to 36.6 inches); very dark grayish brown (2.5Y 3/2) broken face, olive brown (2.5Y 4/3) broken face, dry; clay loam; 33 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderately slow permeability; 2.0 very fine roots; 3.0 very fine tubular and 1.0 fine tubular pores; 10 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; clear wavy boundary. Lab sample # 08N01487; slightly moist when described; observed in pit, small
    AB—93 to 112 centimeters (36.6 to 44.1 inches); 75 percent dark olive brown (2.5Y 3/3) broken face and 25 percent light olive brown (2.5Y 5/4) broken face, 75 percent light olive brown (2.5Y 5/3) broken face and 25 percent pale yellow (2.5Y 7/4) broken face, dry; clay loam; 35 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; slow permeability; 1.0 very fine roots; 1.0 very fine tubular and 1.0 very fine irregular pores; 10 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; abrupt wavy boundary. Lab sample # 08N01488; slightly moist when described; observed in pit, small
    Bw—112 to 125 centimeters (44.1 to 49.2 inches); light olive brown (2.5Y 5/4) broken face, pale yellow (2.5Y 7/4) broken face, dry; clay loam; 30 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; slightly hard, friable, slightly sticky, moderately plastic; moderately slow permeability; 1.0 very fine roots; 0.2 very fine irregular pores; 2 percent medium prominent irregular weakly coherent cemented light yellowish brown (2.5Y 6/3), moist, iron depletions with diffuse boundaries in matrix surrounding redox concentrations and 2 percent fine prominent irregular weakly coherent cemented light yellowish brown (2.5Y 6/3), moist, iron depletions with diffuse boundaries in matrix surrounding redox concentrations and 3 percent medium distinct irregular weakly coherent cemented strong brown (7.5YR 5/8), moist, iron-manganese masses with diffuse boundaries in matrix surrounding redox depletions and 3 percent fine distinct irregular weakly coherent cemented strong brown (7.5YR 5/8), moist, iron-manganese masses with diffuse boundaries in matrix surrounding redox depletions; 8 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; very strongly acid, pH 4.8, pH indicator strip; clear wavy boundary. Lab sample # 08N01489; moist when described; observed in pit, small
    Bt1—125 to 154 centimeters (49.2 to 60.6 inches); light olive brown (2.5Y 5/4) broken face, pale yellow (2.5Y 7/4) broken face, dry; gravelly clay loam; 34 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderately slow permeability; 0.5 very fine roots; 0.5 very fine tubular and 0.5 very fine irregular pores; 5 percent faint clay films on surfaces along pores and 5 percent faint clay films on all faces of peds; 5 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments and 20 percent by volume nonflat rounded moderately coherent cemented 2-38-75 millimeter mixed fragments; noneffervescent; very strongly acid, pH 4.8, pH indicator strip; clear wavy boundary. Lab sample # 08N01490; moist when described; observed in pit, small
    Bt2—154 to 200 centimeters (60.6 to 78.7 inches); light olive brown (2.5Y 5/4) broken face, pale yellow (2.5Y 7/4) broken face, dry; gravelly clay loam; 36 percent clay; weak medium subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; slow permeability; 0.1 very fine roots; 0.2 very fine irregular and 0.2 very fine tubular pores; 5 percent faint clay films on surfaces along pores and 5 percent faint clay films on all faces of peds; 2 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments and 25 percent by volume nonflat rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; very strongly acid, pH 4.8, pH indicator strip. Lab sample # 08N01491; moist when described; observed in pit, small