IDENTIFIERS

  • Current Taxon Name (Soil Name): Redcrest
  • OSD
  • Series Extent
  • User Site ID: 02CA601111
  • User Pedon ID: 02CA601111
  • Vegetation Plot ID: 02CA601111
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 06N0220
  • NCSS Pedon Lab Data NASIS Record ID - 18541
  • Print Date: 4/15/2025

    • 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: 40.3950000
  • Std. Longitude: -123.9002778
  • Datum: WGS84
  • Township: 1S
  • Range: 2E
  • Section: 12
  • PLSS Details: southwest quarter, northeast quarter
  • Location Description: Humboldt County, California; Located approximately 4 kilometers east of the town of Redcrest, south of Larabee Creek, on Pacific Lumber Road E18 to E18.8 to unnumbered spur road to the north.
  • Map Unit: 385—Scoutcamp-Redcrest complex, 50 to 75 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA601—Humboldt County, South Part, California
  • 7.5 Minute USGS Quad: 40123-D8—Redcrest, California

    • PEDON

  • Describers Name: Jennifer Berman
  • Current Taxonomic Class: Fine-silty, mixed, superactive, isomesic Dystric Eutrudepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 111
  • Correlated Information:
  • Soil Name - Redcrest (flagged as OSD)
  • PSC - 25 to 100 cm.
  • Classificaton Date - 3/5/2012
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Redcrest
  • Classificaton Date - 9/20/2005
  • 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, upper third
  • Hill Slope Profile: backslope
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: weakly coherent siltstone, unspecified
  • Geology: Wildcat Undifferentiated member of the Wildcat Group group.
  • Surface Fragments: 5.00 percent nonflat subangular weakly coherent cemented 2- to 75-millimeter siltstone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/20/2005 (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

    ACMA3

    LIDE3

    POMU

    SESE3

    Acer macrophyllum

    Lithocarpus densiflorus

    Polystichum munitum

    Sequoia sempervirens

    bigleaf maple

    tanoak

    western swordfern

    redwood

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

    ochric epipedon

    cambic horizon

    0—27

    27—200

    —27—

    —173—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    9/20/2005

    50

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    13
    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

    74

    —

    —

    354

    —

    80

    1520

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    285

    11

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    A1—0 to 9 centimeters (0.0 to 3.5 inches); brown (10YR 4/3) broken face, pale brown (10YR 6/3) broken face, dry; very paragravelly silt loam; 22 percent clay; moderate medium granular structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 5.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout and 1.0 coarse roots throughout; 1.0 very fine irregular and 1.0 medium irregular and 1.0 fine irregular pores; 45 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter siltstone, unspecified fragments; moderately acid, pH 5.9, pH meter; clear smooth boundary.; dry when described; observed in cut
    A2—9 to 27 centimeters (3.5 to 10.6 inches); very dark brown (10YR 2/2) broken face, dark grayish brown (10YR 4/2) broken face, dry; very paragravelly silt loam; 23 percent clay; moderate medium granular structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 3.0 very fine roots throughout and 1.0 very coarse roots throughout and 5.0 medium roots throughout and 1.0 fine roots throughout and 1.0 coarse roots throughout; 1.0 very fine irregular and 1.0 medium irregular and 1.0 fine irregular pores; 50 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter siltstone, unspecified fragments; moderately acid, pH 5.8, chlorophenol red; clear smooth boundary.; dry when described; observed in cut
    Bt1—27 to 48 centimeters (10.6 to 18.9 inches); olive brown (2.5Y 4/3) broken face, light yellowish brown (2.5Y 6/3) broken face, dry; extremely paragravelly loam; 22 percent clay; moderate fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; moderate excavation difficulty; 1.0 very fine roots throughout and 1.0 very coarse roots throughout and 1.0 medium roots throughout and 0.5 fine roots throughout and 1.0 coarse roots throughout; 1.0 very fine tubular and 0.5 fine tubular pores; 10 percent prominent clay films on all faces of peds; 4 percent by volume nonflat subangular moderately coherent cemented 75-100-250 millimeter siltstone, unspecified fragments and 70 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; moderately acid, pH 6.0, chlorophenol red; clear wavy boundary.; dry when described; observed in cut
    Bt2—48 to 67 centimeters (18.9 to 26.4 inches); light olive brown (2.5Y 5/3) broken face, pale yellow (2.5Y 7/3) broken face, dry; extremely paragravelly loam; 21 percent clay; moderate fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; moderate permeability; moderate excavation difficulty; 1.0 very fine roots throughout and 1.0 very coarse roots throughout and 5.0 medium roots throughout and 0.5 fine roots throughout and 1.0 coarse roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; 20 percent prominent clay films on all faces of peds; 4 percent by volume nonflat subangular moderately coherent cemented 75-100-250 millimeter siltstone, unspecified fragments and 55 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; moderately acid, pH 5.9, chlorophenol red; gradual wavy boundary.; dry when described; observed in cut
    Bt3—67 to 85 centimeters (26.4 to 33.5 inches); light olive brown (2.5Y 5/3) broken face, pale yellow (2.5Y 7/3) broken face, dry; very paragravelly silt loam; 22 percent clay; 10 percent yellowish brown (10YR 5/6) coarse prominent irregular mottles; moderate fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; moderate permeability; moderate excavation difficulty; 0.5 very fine roots throughout and 1.0 very coarse roots throughout and 5.0 medium roots throughout and 0.5 fine roots throughout and 3.0 coarse roots throughout; 5.0 very fine tubular and 0.5 fine tubular pores; 50 percent distinct clay films on all faces of peds; 2 percent by volume nonflat subangular moderately coherent cemented 75-100-250 millimeter siltstone, unspecified fragments and 48 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; moderately acid, pH 5.9, bromcresol green; gradual wavy boundary.; dry when described; observed in cut
    Bt4—85 to 110 centimeters (33.5 to 43.3 inches); light olive brown (2.5Y 5/3) broken face, pale yellow (2.5Y 7/3) broken face, dry; extremely paragravelly loam; 24 percent clay; 10 percent yellowish brown (10YR 5/6) coarse prominent irregular mottles; moderate fine subangular blocky, and moderate very fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; moderate permeability; very high excavation difficulty; 0.5 very fine roots throughout and 1.0 very coarse roots throughout and 5.0 medium roots throughout and 1.0 fine roots throughout and 1.0 coarse roots throughout; 0.5 very fine tubular and 3.0 fine tubular pores; 20 percent distinct clay films on all faces of peds; 18 percent by volume nonflat subangular moderately coherent cemented 75-100-250 millimeter siltstone, unspecified fragments and 50 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; slightly acid, pH 6.2, bromcresol green; clear wavy boundary.; dry when described; observed in cut
    BCt—110 to 200 centimeters (43.3 to 78.7 inches); light olive brown (2.5Y 5/3) broken face, pale yellow (2.5Y 7/3) broken face, dry; extremely paragravelly loam; 21 percent clay; 10 percent yellowish brown (10YR 5/6) coarse prominent irregular mottles; moderate very fine subangular blocky, and moderate fine subangular blocky structure; hard, friable, slightly sticky, moderately plastic; moderate permeability; high excavation difficulty; 0.5 very fine roots throughout and 1.0 medium roots throughout and 0.5 fine roots throughout; 1.0 very fine tubular and 0.5 fine tubular pores; 15 percent distinct clay films on all faces of peds and 20 percent distinct clay films on rock fragments; 20 percent by volume nonflat subangular moderately coherent cemented 75-100-250 millimeter siltstone, unspecified fragments and 50 percent by volume nonflat subangular moderately coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; slightly acid, pH 6.4, chlorophenol red.; dry when described; observed in cut