IDENTIFIERS

  • Current Taxon Name (Soil Name): Trailhead
  • OSD
  • Series Extent
  • User Site ID: S1982CA605REDW001
  • User Pedon ID: S10CA023004
  • Vegetation Plot ID: S1982CA605REDW001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 10N0675
  • NCSS Pedon Lab Data NASIS Record ID - 43143
  • 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: 41.2090988
  • Std. Longitude: -123.9959869
  • Datum: WGS84
  • Township: 10N
  • Range: 2E
  • Section: 31
  • PLSS Details: southeast quarter, southwest quarter
  • Location Description: Redwood National Park, Humboldt County, California; located 19 kilometers southeast of the town of Orick; 152 meters west-northwest of trailhead to Tall Trees Gorve from C-Line Road.
  • Map Unit: 562—Trailhead-Fortyfour complex, 30 to 50 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: 41123-B8—Bald Hills, California

    • PEDON

  • Describers Name: Jim Popenoe
  • Current Taxonomic Class: Fine, parasesquic, isomesic Typic Palehumults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 4
  • Correlated Information:
  • Soil Name - Trailhead
  • PSC - 22 to 72 cm.
  • Classificaton Date - 4/12/2010
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Trailhead
  • Taxonomic Class - Fine, parasesquic, isomesic Typic Palehumult
  • Taxon Kind - series
  • Classificaton Date - 1/14/1982
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from schist
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, lower third
  • Hill Slope Profile: footslope
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: schist, unspecified
  • Geology: Redwood Creek Schist member of the Franciscan Formation formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/14/1982 (actual site observation date)
  • Air Photo ID: 6-20
  • Surface Water Kind: none observed
  • Plant Association Name: Redwood-Douglas-fir Forest
  • 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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    LIDE3

    MANE2

    PSME

    RHMA3

    SESE3

    TSHE

    VAOV2

    Lithocarpus densiflorus

    Mahonia nervosa

    Pseudotsuga menziesii

    Rhododendron macrophyllum

    Sequoia sempervirens

    Tsuga heterophylla

    Vaccinium ovatum

    tanoak

    Cascade barberry

    Douglas-fir

    Pacific rhododendron

    redwood

    western hemlock

    California huckleberry

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

    ochric epipedon

    argillic horizon

    2—30

    30—202

    —30—

    —172—
    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

    25

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    —

    274

    —

    170

    2150

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    275

    11

    14

    9

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    Oi—0 to 2 centimeters (0.0 to 0.8 inches); slightly decomposed plant material; fragments.; moist when described; observed in pit, small
    A—2 to 13 centimeters (0.8 to 5.1 inches); dark brown (7.5YR 3/3) broken face, brown (7.5YR 4/4) broken face, dry; clay loam; 28 percent clay; moderate medium subangular blocky parts to moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 4.0 very fine roots and 4.0 medium roots and 10.0 fine roots; 4.0 very fine irregular and 4.0 very fine tubular and 4.0 fine tubular pores; 11 percent fine spherical yellowish red (5YR 5/6) iron-manganese nodules; 3 percent by volume subrounded 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 6.0, pH meter; clear wavy boundary. Lab sample # 10N03089; moist when described; observed in pit, small
    AB—13 to 30 centimeters (5.1 to 11.8 inches); reddish brown (5YR 4/4) broken face, reddish brown (5YR 5/4) broken face, dry; clay loam; 32 percent clay; moderate medium subangular blocky parts to moderate fine subangular blocky structure; hard, friable, slightly sticky, moderately plastic; moderate permeability; 4.0 medium roots and 4.0 fine roots and 0.5 coarse roots; 4.0 very fine tubular and 4.0 very fine irregular and 4.0 fine tubular pores; 11 percent fine spherical yellowish red (5YR 5/6) iron-manganese nodules; 2 percent by volume subrounded 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.8, pH meter; gradual wavy boundary. Lab sample # 10N03090; moist when described; observed in pit, small
    BAt—30 to 68 centimeters (11.8 to 26.8 inches); yellowish red (5YR 4/6) broken face, yellowish red (5YR 5/6) broken face, dry; clay loam; 38 percent clay; weak coarse subangular blocky parts to weak medium subangular blocky structure; slightly hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 4.0 medium roots and 4.0 fine roots and 4.0 coarse roots; 0.5 very fine tubular and 0.5 medium tubular and 0.5 fine tubular pores; 15 percent distinct clay films on all faces of peds; 2 percent by volume 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.7, pH meter; diffuse smooth boundary. Lab sample # 10N03091; moist when described; observed in pit, small
    Bt1—68 to 92 centimeters (26.8 to 36.2 inches); yellowish red (5YR 4/6) broken face, yellowish red (5YR 5/6) broken face, dry; clay; 44 percent clay; weak very coarse subangular blocky parts to weak medium subangular blocky structure; hard, firm, moderately sticky, very plastic; moderately slow permeability; 4.0 medium roots and 4.0 fine roots and 4.0 coarse roots; 0.5 very fine tubular and 0.5 fine tubular pores; 7 percent distinct clay films on surfaces along pores and 8 percent distinct clay films on all faces of peds; 2 percent by volume 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.7, pH meter; diffuse smooth boundary. Lab sample # 10N03092; moist when described; observed in pit, small
    Bt2—92 to 167 centimeters (36.2 to 65.7 inches); red (2.5YR 4/6) broken face, yellowish red (5YR 5/6) broken face, dry; clay; 50 percent clay; weak very coarse subangular blocky structure; hard, firm, moderately sticky, very plastic; moderately slow permeability; 4.0 medium roots and 4.0 fine roots and 0.5 coarse roots; 0.5 very fine tubular and 0.5 fine tubular pores; 15 percent faint clay films on all faces of peds and 37 percent distinct clay films on surfaces along pores; 2 percent by volume 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.7, pH meter; diffuse smooth boundary. Lab sample # 10N03093; moist when described; observed in pit, small
    Bt3—167 to 202 centimeters (65.7 to 79.5 inches); red (2.5YR 4/6) broken face, yellowish red (5YR 5/6) broken face, dry; clay; 50 percent clay; weak very coarse subangular blocky structure; hard, firm, moderately sticky, very plastic; moderately slow permeability; 0.5 medium roots and 0.5 fine roots; 0.5 very fine tubular and 0.5 fine tubular pores; 18 percent distinct clay films on surfaces along pores and 19 percent distinct clay films on all faces of peds; 10 percent by volume 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.6, pH meter. Lab sample # 10N03094; moist when described; observed in pit, small