IDENTIFIERS

  • Current Taxon Name (Soil Name): Redwoodhouse sim
  • OSD
  • Series Extent
  • User Site ID: 02CA601093
  • User Pedon ID: 02CA601093
  • Vegetation Plot ID: 02CA601093
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 03N0872
  • NCSS Pedon Lab Data NASIS Record ID - 16285
  • Print Date: 4/29/2025

    • 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: 40.3800000
  • Std. Longitude: -123.9152778
  • Datum: WGS84
  • Township: 1S
  • Range: 2E
  • Section: 13
  • PLSS Details: southwest quarter, northeast quarter
  • Map Unit: 513—Redwoodhouse-Yagercreek-Mailridge complex, 30 to 50 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA600—Humboldt County, Central Part, California
  • 7.5 Minute USGS Quad: 40123-D8—Redcrest, California

    • PEDON

  • Describers Name: Jennifer Berman and Sue Aszman
  • Current Taxonomic Class: Fine, mixed, superactive, isomesic Typic Argiudolls
  • Current Taxon Kind: series
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 93
  • Correlated Information:
  • Soil Name - Redwoodhouse sim
  • PSC - 23 to 73 cm.
  • Classificaton Date - 3/5/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Redwoodhouse
  • Classificaton Date - 9/30/2002
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from sandstone and siltstone and/or residuum weathered from sandstone and siltstone
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, lower third
  • Hill Slope Profile: backslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: concave
  • Runoff: very high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: moderately coherent sandstone and siltstone
  • Geology: Yager Formation formation.
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/30/2002 (actual site observation date)
  • Air Photo ID: 6247-81
  • 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 - intermixed conifers and hardwoods
  • 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

    SESE3

    Lithocarpus densiflorus

    Sequoia sempervirens

    tanoak

    redwood

    —

    —

    —

    —

    —

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

    mollic epipedon

    argillic horizon

    0—43

    23—161

    —43—

    —138—
    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

    48

    —

    —

    500

    —

    190

    1520

    —

    285

    11

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 23 centimeters (0.0 to 9.1 inches); very dark brown (10YR 2/2) broken face, dark grayish brown (10YR 4/2) broken face, dry; paragravelly loam; 15 percent sand; 54 percent silt; 31 percent clay; strong fine subangular blocky, and strong very fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; moderate permeability; 15.0 very fine roots throughout and 4.0 medium roots throughout and 10.0 fine roots throughout; 0.5 very fine tubular pores; 5 percent by volume nonflat subangular strongly coherent cemented 2-5-5 millimeter sandstone, unspecified fragments and 20 percent by volume nonflat subangular moderately coherent cemented 2-5-5 millimeter siltstone, unspecified fragments; neutral, pH 6.8, chlorophenol red; abrupt wavy boundary.; dry when described; observed in cut
    ABt—23 to 43 centimeters (9.1 to 16.9 inches); very dark grayish brown (10YR 3/2) broken face, grayish brown (10YR 5/2) broken face, dry; paragravelly clay loam; 16 percent sand; 52 percent silt; 32 percent clay; strong very fine subangular blocky, and strong fine subangular blocky structure; slightly hard, very friable, moderately sticky, moderately plastic; moderate permeability; 0.5 very fine roots throughout and 5.0 medium roots throughout and 5.0 fine roots throughout and 4.0 coarse roots throughout; 0.5 very fine tubular pores; 30 percent prominent organoargillans on all faces of peds; 10 percent by volume nonflat subangular strongly coherent cemented 2-10-75 millimeter sandstone, unspecified fragments and 20 percent by volume nonflat subangular moderately coherent cemented 2-5-5 millimeter siltstone, unspecified fragments; neutral, pH 6.6, chlorophenol red; clear wavy boundary.; dry when described; observed in cut
    Bt1—43 to 75 centimeters (16.9 to 29.5 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; paragravelly clay loam; 16 percent sand; 52 percent silt; 32 percent clay; strong fine subangular blocky structure; moderately hard, friable, moderately sticky, very plastic; moderate permeability; 4.0 medium roots throughout and 0.5 fine roots throughout and 0.5 coarse roots throughout; 0.5 very fine tubular pores; 10 percent prominent olive brown (2.5Y 4/3), moist, organoargillans on rock fragments and 30 percent distinct clay films on all faces of peds; 10 percent by volume nonflat subangular strongly coherent cemented 2-10-75 millimeter sandstone, unspecified fragments and 30 percent by volume nonflat subangular moderately coherent cemented 2-5-75 millimeter sandstone, unspecified fragments; slightly acid, pH 6.4, chlorophenol red; clear wavy boundary.; dry when described; observed in cut
    Bt2—75 to 122 centimeters (29.5 to 48.0 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; very paragravelly clay loam; 9 percent sand; 51 percent silt; 39 percent clay; strong very fine subangular blocky structure; moderately hard, friable, moderately sticky, very plastic; moderately slow permeability; 0.5 very coarse roots throughout and 4.0 medium roots throughout and 0.5 fine roots throughout and 0.5 coarse roots throughout; 0.5 very fine tubular pores; 60 percent distinct clay films on all faces of peds; 2 percent by volume nonflat subangular strongly coherent cemented 75-100-250 millimeter sandstone, unspecified fragments and 15 percent by volume nonflat subangular strongly coherent cemented 2-25-75 millimeter sandstone, unspecified fragments and 40 percent by volume nonflat subangular moderately coherent cemented 2-5-5 millimeter siltstone, unspecified fragments; slightly acid, pH 6.4, chlorophenol red; gradual wavy boundary.; dry when described; observed in cut
    Bt3—122 to 165 centimeters (48.0 to 65.0 inches); olive brown (2.5Y 4/4) broken face, light yellowish brown (2.5Y 6/4) broken face, dry; very paragravelly clay loam; 41 percent sand; 27 percent silt; 32 percent clay; moderate very fine subangular blocky structure; slightly hard, friable, moderately sticky, very plastic; moderately slow permeability; 1.0 very coarse roots throughout and 5.0 medium roots throughout and 0.5 fine roots throughout and 1.0 coarse roots throughout; 0.5 very fine tubular pores; 40 percent distinct clay films on all faces of peds; 5 percent by volume nonflat subangular strongly coherent cemented 5-25-75 millimeter sandstone, unspecified fragments and 40 percent by volume nonflat subangular moderately coherent cemented 2-5-5 millimeter siltstone, unspecified fragments; slightly acid, pH 6.2, chlorophenol red; gradual wavy boundary.; dry when described; observed in pit, small