IDENTIFIERS

  • Current Taxon Name (Soil Name): Rootcreek
  • OSD
  • Series Extent
  • User Site ID: 02CA601110
  • User Pedon ID: 02CA601110
  • Vegetation Plot ID: 02CA601110
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 07N0344
  • NCSS Pedon Lab Data NASIS Record ID - 19037
  • Print Date: 11/24/2024

    • 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: 40.4011111
  • Std. Longitude: -123.9172222
  • Datum: WGS84
  • Township: 1S
  • Range: 2E
  • Section: 11
  • PLSS Details: southwest quarter, southeast quarter
  • Location Description: Humboldt County, California; Located approximately 2.5 kilometers east of the town of Redcrest, south of Larabee Creek, on Pacific Lumber Company Road E18.2
  • Map Unit: 384—Scoutcamp-Rootcreek-Redcrest complex, 30 to 50 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, Jonathan Hooper
  • Current Taxonomic Class: Fine-silty, mixed, superactive, isomesic Aquollic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Rootcreek (flagged as OSD)
  • PSC - 59 to 109 cm.
  • Classificaton Date - 3/5/2012
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Rootcreek
  • Classificaton Date - 10/30/2002
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from siltstone and/or residuum weathered from siltstone
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank, center third
  • Hill Slope Profile: backslope
  • Slope Complexity: complex
  • Slope Shape Across: concave
  • Slope Shape Down: concave
  • Runoff: high
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: very weakly coherent siltstone, unspecified
  • Geology: Wildcat Undifferentiated member of the Wildcat Group group.
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/30/2002 (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 - 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

    SESE3

    ARME

    LIDE3

    GASH

    POMU

    PTAQ

    PSME

    Sequoia sempervirens

    Arbutus menziesii

    Lithocarpus densiflorus

    Gaultheria shallon

    Polystichum munitum

    Pteridium aquilinum

    Pseudotsuga menziesii

    redwood

    Pacific madrone

    tanoak

    salal

    western swordfern

    western brackenfern

    Douglas-fir

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

    umbric epipedon

    argillic horizon

    aquic conditions

    5—31

    31—185

    59—185

    —26—

    —154—

    —126—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    10/30/2002

    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

    47

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    —

    219

    —

    8

    1520

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    285

    11

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    Oi—0 to 5 centimeters (0.0 to 2.0 inches); slightly decomposed plant material; low excavation difficulty; fragments; abrupt smooth boundary.; observed in cut
    A1—5 to 14 centimeters (2.0 to 5.5 inches); very dark grayish brown (10YR 3/2) broken face, brown (10YR 5/3) broken face, dry; silt loam; 18 percent clay; moderate very fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 3.0 very fine roots throughout and 1.0 medium roots throughout and 3.0 fine roots throughout; 2.0 very fine tubular pores; fragments; moderately acid, pH 5.8, chlorophenol red; clear wavy boundary.; dry when described; observed in cut
    A2—14 to 31 centimeters (5.5 to 12.2 inches); very dark grayish brown (10YR 3/2) broken face, grayish brown (10YR 5/2) broken face, dry; silt loam; 17 percent clay; moderate fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 3.0 very fine roots throughout and 2.0 medium roots throughout and 3.0 fine roots throughout; 2.0 very fine tubular and 1.0 fine tubular pores; fragments; moderately acid, pH 5.8, chlorophenol red; clear smooth boundary.; dry when described; observed in cut
    Bt1—31 to 59 centimeters (12.2 to 23.2 inches); dark yellowish brown (10YR 4/4) broken face, brownish yellow (10YR 6/6) broken face, dry; silt loam; 18 percent clay; moderate coarse subangular blocky parts to moderate fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate permeability; low excavation difficulty; 2.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 0.5 very fine tubular pores; 3 percent faint clay films on all faces of peds; fragments; strongly acid, pH 5.4, bromcresol green; clear smooth boundary.; dry when described; observed in cut
    Bt2—59 to 81 centimeters (23.2 to 31.9 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; silty clay loam; 23 percent clay; weak coarse prismatic parts to moderate coarse subangular blocky structure; moderately hard, friable, slightly sticky, moderately plastic; moderate permeability; low excavation difficulty; 2.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 3.0 very fine tubular pores; 15 percent faint clay films on all faces of peds; 10 percent fine prominent grayish brown (2.5Y 5/2), moist, iron depletions in matrix and 15 percent medium prominent strong brown (7.5YR 5/8), moist, iron-manganese masses in matrix; fragments; strongly acid, pH 5.2, bromcresol green; clear smooth boundary.; dry when described; observed in cut
    Bt3—81 to 107 centimeters (31.9 to 42.1 inches); light olive brown (2.5Y 5/3) broken face, light yellowish brown (2.5Y 6/3) broken face, dry; silty clay loam; 24 percent clay; weak coarse prismatic parts to moderate coarse subangular blocky structure; hard, friable, slightly sticky, moderately plastic; moderate permeability; low excavation difficulty; 2.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 2.0 very fine tubular and 10.0 fine tubular pores; 15 percent faint clay films on all faces of peds; 5 percent fine faint grayish brown (2.5Y 5/2), moist, iron depletions in matrix and 25 percent medium prominent strong brown (7.5YR 5/8), moist, iron-manganese masses in matrix; fragments; strongly acid, pH 5.2, bromcresol green; clear smooth boundary.; dry when described; observed in cut
    Bt4—107 to 144 centimeters (42.1 to 56.7 inches); grayish brown (2.5Y 5/2) broken face, strong brown (2.5Y 6/2) broken face, dry; silty clay loam; 25 percent clay; moderate coarse prismatic structure; very hard, firm, slightly sticky, moderately plastic; moderately slow permeability; moderate excavation difficulty; 2.0 very fine roots throughout and 1.0 medium roots throughout and 1.0 fine roots throughout; 2.0 very fine tubular pores; 70 percent prominent clay films on all faces of peds; 30 percent medium prominent strong brown (7.5YR 5/8), moist, iron-manganese masses in matrix; fragments; strongly acid, pH 5.2, bromcresol green; gradual smooth boundary.; dry when described; observed in cut
    Bt5—144 to 185 centimeters (56.7 to 72.8 inches); grayish brown (2.5Y 5/2) broken face, light brownish gray (2.5Y 6/2) broken face, dry; silty clay loam; 26 percent clay; moderate coarse prismatic structure; very hard, firm, slightly sticky, moderately plastic; moderately slow permeability; moderate excavation difficulty; 0.5 very fine roots throughout; 2.0 fine tubular pores; 70 percent prominent clay films on all faces of peds; 60 percent medium prominent strong brown (7.5YR 5/6), moist, iron-manganese masses in matrix; fragments; moderately acid, pH 5.6, chlorophenol red.; dry when described; observed in cut