IDENTIFIERS

  • Current Taxon Name (Soil Name): Squashan
  • OSD
  • Series Extent
  • User Site ID: 04CA605REDW026
  • User Pedon ID: 04CA605REDW026
  • Vegetation Plot ID: 04CA605REDW026
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 05N0017
  • NCSS Pedon Lab Data NASIS Record ID - 17523
  • 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: 41.3760556
  • Std. Longitude: -124.0058333
  • Datum: WGS84
  • Township: 12N
  • Range: 1E
  • Section: 36
  • PLSS Details: southwest quarter, southwest quarter
  • Location Description: Redwood National Park, Humboldt County, California; located approximately 1.3 miles northest on Cal Barrel Road; bankcut.
  • Map Unit: 293—Ossagon-Goldbluffs-Squashan complex, 9 to 30 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-D1—Fern Canyon, California

    • PEDON

  • Describers Name: Joe Seney
  • Current Taxonomic Class: Loamy-skeletal, isotic, isomesic Typic Haplohumults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 426
  • Correlated Information:
  • Soil Name - Squashan
  • PSC - 43 to 93 cm.
  • Classificaton Date - 5/22/2013
  • Classifier - Jonathan Hooper
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Squashan
  • Classificaton Date - 4/28/2004
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loamy alluvium over gravelly alluvium
  • Landscape: mountains
  • Landform: spur ridge on mountain slope
  • Geomorphic Component Mountains: mountainflank
  • Hill Slope Profile: backslope
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Gold Bluffs Unit member of the Prairie Creek Formation formation.
  • Surface Fragments: 10.00 percent nonflat well rounded indurated 2- to 75-millimeter mixed, 10.00 percent nonflat well rounded indurated 75- to 250-millimeter mixed,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/28/2004 (actual site observation date)
  • Air Photo ID: 6246-207
  • Surface Water Kind: none observed
  • Plant Association Name: Redwood, moist
  • 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
  • Current Air Temp - 12
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    BLSP

    CAREX

    GALIU

    GASH

    LIDE3

    MAIAN

    OXOR

    POMU

    RUSP

    SESE3

    TRILL

    TROV2

    VAOV2

    VAPA

    VICIA

    Blechnum spicant

    Carex

    Galium

    Gaultheria shallon

    Lithocarpus densiflorus

    Maianthemum

    Oxalis oregana

    Polystichum munitum

    Rubus spectabilis

    Sequoia sempervirens

    Trillium

    Trillium ovatum

    Vaccinium ovatum

    Vaccinium parvifolium

    Vicia

    deer fern

    sedge

    bedstraw

    salal

    tanoak

    mayflower

    redwood-sorrel

    western swordfern

    salmonberry

    redwood

    trillium

    Pacific trillium

    California huckleberry

    red huckleberry

    vetch

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

    umbric epipedon

    argillic horizon

    5—43

    43—200

    —38—

    —157—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    4/28/2004

    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

    15

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    202

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    212

    1800

    —

    290

    12

    13

    9

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    Oi—0 to 5 centimeters (0.0 to 2.0 inches); slightly decomposed plant material; loose, loose, nonsticky, nonplastic; rapid permeability; 1.0 medium roots and 2.0 fine roots; 10 percent by volume nonflat well rounded indurated 75-162-250 millimeter mixed fragments and 10 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; abrupt smooth boundary. Lab sample # 05N00050; moist when described; observed in cut, beveled
    A1—5 to 22 centimeters (2.0 to 8.7 inches); very dark grayish brown (10YR 3/2) broken face, brown (10YR 4/3) broken face, dry; very gravelly loam; 22 percent clay; moderate medium granular, and moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 2.0 very fine roots and 1.0 medium roots and 6.0 fine roots; 2.0 very fine interstitial and 4.0 very fine tubular and 4.0 fine tubular and 2.0 fine interstitial pores; 25 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.8, pH indicator strip; clear smooth boundary. Lab sample # 05N00051; moist when described; observed in cut, beveled
    A2—22 to 43 centimeters (8.7 to 16.9 inches); dark grayish brown (10YR 4/2) broken face, brown (10YR 5/3) broken face, dry; very gravelly loam; 24 percent clay; moderate very fine subangular blocky, and moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 2.0 very fine roots and 1.0 very coarse roots and 1.0 medium roots and 2.0 fine roots and 1.0 coarse roots; 2.0 very fine interstitial and 3.0 very fine tubular and 1.0 medium tubular and 2.0 fine interstitial and 3.0 fine tubular pores; 35 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.8, pH indicator strip; clear wavy boundary. Lab sample # 05N00052; moist when described; observed in cut, beveled
    Bt1—43 to 83 centimeters (16.9 to 32.7 inches); brown (7.5YR 4/4) broken face, strong brown (7.5YR 5/6) broken face, dry; gravelly clay loam; 29 percent clay; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderately slow permeability; 2.0 very fine roots and 3.0 very coarse roots and 1.0 medium roots and 2.0 fine roots and 1.0 coarse roots; 2.0 very fine tubular and 4.0 very fine interstitial and 2.0 fine tubular and 4.0 fine interstitial pores; 10 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 10 percent distinct strong brown (7.5YR 5/6), moist, clay films on rock fragments; 10 percent by volume nonflat well rounded indurated 75-162-250 millimeter mixed fragments and 45 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; strongly acid, pH 5.4, pH indicator strip; clear wavy boundary. Lab sample # 05N00053; moist when described; observed in cut, beveled
    Bt2—83 to 120 centimeters (32.7 to 47.2 inches); brown (7.5YR 4/4) broken face, strong brown (7.5YR 5/6) broken face, dry; very gravelly clay loam; 30 percent clay; moderate fine subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 2.0 very fine roots and 1.0 very coarse roots and 1.0 medium roots and 4.0 fine roots and 1.0 coarse roots; 2.0 very fine tubular and 2.0 very fine interstitial and 2.0 fine tubular and 2.0 fine interstitial pores; 20 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 25 percent distinct strong brown (7.5YR 5/6), moist, clay films on rock fragments; 7 percent by volume nonflat well rounded indurated 75-162-250 millimeter mixed fragments and 40 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; strongly acid, pH 5.4, pH indicator strip; clear wavy boundary. Lab sample # 05N00054; moist when described; observed in cut, beveled
    Bt3—120 to 165 centimeters (47.2 to 65.0 inches); strong brown (7.5YR 5/8) broken face, brownish yellow (10YR 6/6) broken face, dry; very gravelly sandy loam; 14 percent clay; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 0.2 fine roots; 2.0 very fine tubular and 2.0 very fine interstitial and 2.0 fine interstitial pores; 15 percent distinct strong brown (7.5YR 5/6), moist, clay films on rock fragments and 30 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds; 3 percent by volume nonflat well rounded indurated 75-162-250 millimeter mixed fragments and 60 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; strongly acid, pH 5.4, pH indicator strip; clear wavy boundary. Lab sample # 05N00055; moist when described; observed in cut, beveled
    BCt—165 to 200 centimeters (65.0 to 78.7 inches); yellowish brown (10YR 5/6) broken face, yellow (10YR 7/6) broken face, dry; extremely gravelly sandy loam; 12 percent clay; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 0.2 fine roots; 2.0 very fine interstitial and 2.0 fine interstitial pores; 10 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 25 percent distinct strong brown (7.5YR 5/6), moist, clay films on rock fragments; 5 percent by volume nonflat well rounded indurated 75-162-250 millimeter mixed fragments and 60 percent by volume nonflat well rounded indurated 2-38-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.6, pH indicator strip. Lab sample # 05N00056; moist when described; observed in cut, beveled