IDENTIFIERS

  • Current Taxon Name (Soil Name): Espa
  • OSD
  • Series Extent
  • User Site ID: 03CA605REDW071
  • User Pedon ID: 03CA605REDW071
  • Vegetation Plot ID: 03CA605REDW071
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 04N0744
  • NCSS Pedon Lab Data NASIS Record ID - 16604
  • Print Date: 12/17/2024

    • 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: 41.3261111
  • Std. Longitude: -124.0630000
  • Datum: WGS84
  • Township: 11N
  • Range: 1E
  • Section: 21
  • PLSS Details: southwest quarter, northeast quarter
  • Location Description: Redwood National Park, Humboldt County, California; located approximately 5.0 kilometers west on Davidson Ranch Road Rest Area, from Gold Bluffs Beach Trailhead sign; 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-C1—Orick, California

    • PEDON

  • Describers Name: Joe Seney
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, isomesic Typic Haplohumults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 371
  • Correlated Information:
  • Soil Name - Espa (flagged as OSD)
  • PSC - 41 to 91 cm.
  • Classificaton Date - 3/8/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Ossagon
  • Taxonomic Class - Fine-loamy, mixed, superactive, isomesic Typic Haplohumults
  • Taxon Kind - series
  • Classificaton Date - 8/18/2003
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: older loamy alluvium over sandy alluvium
  • Landscape: mountains
  • Landform: ridge
  • Geomorphic Component Mountains: mountaintop
  • Hill Slope Profile: summit
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: mixed
  • Geology: Prairie Creek Formation formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/18/2003 (actual site observation date)
  • Air Photo ID: 6246-251
  • Surface Water Kind: none observed
  • Plant Association Name: Redwood-Sikta Spruce 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
  • Current Air Temp - 18
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ALRU2

    CHLA

    FRPU7

    GASH

    PISI

    POMU

    PSME

    RUPA

    RUSP

    SESE3

    Alnus rubra

    Chamaecyparis lawsoniana

    Frangula purshiana

    Gaultheria shallon

    Picea sitchensis

    Polystichum munitum

    Pseudotsuga menziesii

    Rubus parviflorus

    Rubus spectabilis

    Sequoia sempervirens

    red alder

    Port Orford cedar

    Cascara buckthorn

    salal

    Sitka spruce

    western swordfern

    Douglas-fir

    thimbleberry

    salmonberry

    redwood

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

    umbric epipedon

    kandic horizon

    7—41

    41—156

    —34—

    —115—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    8/18/2003

    50

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    12
    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

    10

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    176

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    40

    1900

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    300

    11

    13

    10

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    Oi—0 to 7 centimeters (0.0 to 2.8 inches); slightly decomposed plant material; loose, loose, nonsticky, nonplastic; rapid permeability; fragments; noneffervescent; clear smooth boundary. Lab sample # 04N04240; moist when described; observed in cut, beveled
    A1—7 to 20 centimeters (2.8 to 7.9 inches); very dark grayish brown (10YR 3/2) broken face, brown (10YR 5/3) broken face, dry; loam; 23 percent clay; weak fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; moderate permeability; 8.0 very fine roots and 1.0 medium roots and 8.0 fine roots; 8.0 very fine interstitial and 8.0 very fine tubular and 8.0 fine tubular and 8.0 fine interstitial pores; fragments; noneffervescent; moderately acid, pH 6.0, pH indicator strip; clear wavy boundary. Lab sample # 04N04241; moist when described; observed in cut, beveled
    A2—20 to 41 centimeters (7.9 to 16.1 inches); very dark grayish brown (10YR 3/2) broken face, brown (10YR 5/3) broken face, dry; loam; 25 percent clay; moderate fine subangular blocky, and moderate very fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderate permeability; 4.0 very fine roots and 1.0 medium roots and 4.0 fine roots and 1.0 coarse roots; 6.0 very fine tubular and 1.0 medium tubular and 6.0 fine tubular and 1.0 coarse tubular pores; 5 percent faint strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 5 percent faint strong brown (7.5YR 5/6), moist, clay films on surfaces along root channels; fragments; noneffervescent; moderately acid, pH 6.0, pH indicator strip; clear smooth boundary. Lab sample # 04N04242; moist when described; observed in cut, beveled
    Bt1—41 to 63 centimeters (16.1 to 24.8 inches); light yellowish brown (10YR 6/4) broken face, brownish yellow (10YR 6/6) broken face, dry; clay loam; 30 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; moderately hard, firm, moderately sticky, moderately plastic; moderate permeability; 4.0 very fine roots and 1.0 medium roots and 4.0 fine roots and 1.0 coarse roots; 4.0 very fine tubular and 1.0 medium tubular and 4.0 fine tubular pores; 45 percent faint strong brown (7.5YR 5/6), moist, clay films on surfaces along root channels and 45 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds; fragments; noneffervescent; strongly acid, pH 5.2, pH indicator strip; clear wavy boundary. Lab sample # 04N04243; moist when described; observed in cut, beveled
    Bt2—63 to 89 centimeters (24.8 to 35.0 inches); strong brown (7.5YR 5/8) broken face, reddish yellow (7.5YR 6/8) broken face, dry; loam; 26 percent clay; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 2.0 very fine roots and 1.0 medium roots and 2.0 fine roots and 1.0 coarse roots; 3.0 very fine interstitial and 2.0 very fine tubular and 3.0 fine interstitial and 2.0 fine tubular pores; 20 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 20 percent distinct strong brown (7.5YR 4/6), moist, clay films between sand grains and 50 percent distinct strong brown (7.5YR 5/6), moist, clay films on surfaces along root channels; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; clear wavy boundary. Lab sample # 04N04244; moist when described; observed in cut, beveled
    Bt3—89 to 120 centimeters (35.0 to 47.2 inches); strong brown (7.5YR 5/8) broken face, brownish yellow (10YR 6/8) broken face, dry; loam; 22 percent clay; moderate coarse subangular blocky, and moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 2.0 very fine roots and 1.0 very coarse roots and 2.0 fine roots and 1.0 coarse roots; 2.0 very fine interstitial and 2.0 very fine tubular and 2.0 fine tubular and 2.0 fine interstitial pores; 10 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 35 percent distinct strong brown (7.5YR 4/6), moist, clay films between sand grains and 85 percent distinct strong brown (7.5YR 5/6), moist, clay films on surfaces along root channels; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; clear smooth boundary. Lab sample # 04N04245; moist when described; observed in cut, beveled
    BCt—120 to 156 centimeters (47.2 to 61.4 inches); strong brown (7.5YR 5/8) broken face, reddish yellow (7.5YR 6/8) broken face, dry; sandy loam; 18 percent clay; weak coarse subangular blocky, and weak very coarse subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 1.0 very coarse roots and 0.5 fine roots and 1.0 coarse roots; 2.0 very fine interstitial and 0.5 very fine tubular and 2.0 fine interstitial and 0.5 fine tubular pores; 25 percent distinct strong brown (7.5YR 4/6), moist, clay films between sand grains and 85 percent distinct strong brown (7.5YR 5/6), moist, clay films on surfaces along root channels; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; gradual wavy boundary. Lab sample # 04N04246; moist when described; observed in cut, beveled
    C—156 to 200 centimeters (61.4 to 78.7 inches); yellowish brown (10YR 5/8) broken face, brownish yellow (10YR 6/8) broken face, dry; sandy loam; 14 percent clay; structureless massive; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 1.0 very coarse roots and 0.5 fine roots and 1.0 coarse roots; 2.0 very fine interstitial and 0.5 very fine tubular and 2.0 fine interstitial and 0.5 fine tubular pores; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip. Lab sample # 04N04247; moist when described; observed in cut, beveled