IDENTIFIERS

  • Current Taxon Name (Soil Name): Timmons
  • OSD
  • Series Extent
  • User Site ID: S2008CA605069
  • User Pedon ID: S08CA023020
  • Vegetation Plot ID: S2008CA605069
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 08N0577
  • NCSS Pedon Lab Data NASIS Record ID - 20265
  • Print Date: 2/16/2025

    • 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: 41.8603325
  • Std. Longitude: -124.1528091
  • Datum: WGS84
  • Township: 17N
  • Range: 1W
  • Section: 14
  • Location Description: Located approximately 18 meters (60 feet) east of Lake Earl Drive north of Pelican Bay State Prison; Del Norte County, California.
  • Map Unit: 186a—Timmons, 2 to 9 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-F2—Sister Rocks, California

    • PEDON

  • Describers Name: Joe Seney & Alaina Frazier
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, isomesic Typic Palehumults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 69
  • Sampled As Information:
  • Soil Name - Timmons
  • Taxonomic Class - Fine-loamy, mixed, superactive, isomesic Typic Palehumults
  • PSC - 39 to 89 cm.
  • Classificaton Date - 6/16/2008
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: marine deposits derived from mixed
  • Landscape: coastal plain
  • Landform: slightly dissected marine terrace
  • Geomorphic Component Terraces: tread
  • Hill Slope Profile: backslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/16/2008 (actual site observation date)
  • Surface Water Kind: none observed
  • 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

    ALRU2

    GASH

    OXOR

    POMU

    PSME

    SESE3

    VAOV2

    VAPA

    ZINGI

    Alnus rubra

    Gaultheria shallon

    Oxalis oregana

    Polystichum munitum

    Pseudotsuga menziesii

    Sequoia sempervirens

    Vaccinium ovatum

    Vaccinium parvifolium

    Zingiber

    red alder

    salal

    redwood-sorrel

    western swordfern

    Douglas-fir

    redwood

    California huckleberry

    red huckleberry

    ginger

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

    umbric epipedon

    argillic horizon

    3—39

    39—172

    —36—

    —133—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    6/16/2008

    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

    2

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    17

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    1780

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    300

    12

    14

    10

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    Oi—0 to 3 centimeters (0.0 to 1.2 inches); very dark grayish brown (10YR 3/2) broken face, brown (7.5YR 5/3) broken face, dry; slightly decomposed plant material; structureless single grain; loose, loose, nonsticky, nonplastic; rapid permeability; 4.0 very fine roots throughout and 1.0 medium roots throughout and 4.0 fine roots throughout; 10.0 very fine interstitial and 10.0 fine interstitial pores; fragments; noneffervescent; strongly acid, pH 5.3, pH indicator strip; clear wavy boundary. Lab sample # 08N03579; slightly moist when described; observed in pit, small
    A1—3 to 21 centimeters (1.2 to 8.3 inches); dark brown (10YR 3/3) broken face, brown (10YR 5/3) broken face, dry; loam; 23 percent clay; moderate medium subangular blocky, and weak very fine subangular blocky structure; soft, very friable, moderately sticky, slightly plastic; moderate permeability; 4.0 very fine roots throughout and 5.0 very coarse roots throughout and 5.0 medium roots throughout and 4.0 fine roots throughout; 0.5 very fine irregular and 4.0 very fine tubular and 2.0 medium tubular and 4.0 fine tubular pores; fragments; noneffervescent; strongly acid, pH 5.3, pH indicator strip; clear smooth boundary. Lab sample # 08N03580; slightly moist when described; observed in pit, small
    A2—21 to 39 centimeters (8.3 to 15.4 inches); dark brown (7.5YR 3/2) broken face, brown (7.5YR 5/3) broken face, dry; clay loam; 28 percent clay; strong fine subangular blocky, and strong very fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 1.0 very fine roots throughout and 5.0 very coarse roots throughout and 3.0 fine roots throughout and 5.0 coarse roots throughout; 2.0 very fine irregular and 5.0 very fine tubular and 1.0 medium tubular and 4.0 fine tubular pores; fragments; noneffervescent; strongly acid, pH 5.3, pH indicator strip; clear smooth boundary. Lab sample # 08N03581; slightly moist when described; observed in pit, small
    AB—39 to 65 centimeters (15.4 to 25.6 inches); dark brown (7.5YR 3/3) broken face, light brown (7.5YR 6/3) broken face, dry; clay loam; 30 percent clay; moderate fine subangular blocky, and moderate very fine subangular blocky structure; slightly hard, friable, slightly sticky, moderately plastic; moderate permeability; 1.0 very fine roots throughout and 3.0 very coarse roots throughout and 4.0 fine roots throughout; 1.0 very fine tubular and 4.0 very fine irregular and 4.0 medium irregular and 1.0 fine tubular and 4.0 fine irregular pores; fragments; noneffervescent; strongly acid, pH 5.2, pH indicator strip; clear smooth boundary. Lab sample # 08N03582; slightly moist when described; observed in pit, small
    Bt1—65 to 92 centimeters (25.6 to 36.2 inches); dark yellowish brown (10YR 4/4) broken face, yellowish brown (10YR 5/4) broken face, dry; clay loam; 30 percent clay; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, moderately plastic; moderate permeability; 1.0 very fine roots throughout and 1.0 very coarse roots throughout and 2.0 medium roots throughout and 3.0 fine roots throughout; 5.0 very fine tubular and 3.0 very fine irregular and 2.0 fine irregular and 5.0 fine tubular pores; 5 percent faint clay films on all faces of peds; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; clear wavy boundary. Lab sample # 08N03583; slightly moist when described; observed in pit, small
    Bt2—92 to 119 centimeters (36.2 to 46.9 inches); dark yellowish brown (10YR 4/4) broken face, light yellowish brown (10YR 6/4) broken face, dry; clay loam; 30 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, moderately plastic; moderate permeability; 2.0 very fine roots throughout and 2.0 very coarse roots throughout and 2.0 medium roots throughout and 3.0 fine roots throughout; 3.0 very fine irregular and 0.5 medium tubular and 2.0 fine irregular and 0.5 fine tubular pores; 15 percent distinct clay films on all faces of peds; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; clear smooth boundary. Lab sample # 08N03584; slightly moist when described; observed in pit, small
    Bt3—119 to 153 centimeters (46.9 to 60.2 inches); dark yellowish brown (10YR 4/6) broken face, brownish yellow (10YR 6/6) broken face, dry; clay loam; 27 percent clay; moderate medium subangular blocky, and moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 1.0 very fine roots throughout and 2.0 very coarse roots throughout and 2.0 fine roots throughout; 3.0 very fine irregular and 2.0 fine irregular pores; 10 percent distinct clay films on all faces of peds; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip; gradual wavy boundary. Lab sample # 08N03585; slightly moist when described; observed in pit, small
    BCt—153 to 172 centimeters (60.2 to 67.7 inches); yellowish brown (10YR 5/6) broken face, yellow (10YR 7/6) broken face, dry; sandy clay loam; 22 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; 0.2 medium roots throughout and 0.2 fine roots throughout; 3.0 very fine interstitial and 2.0 fine irregular pores; 15 percent distinct clay films on surfaces along pores; 1 percent fine prominent irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron-manganese masses with diffuse boundaries in matrix and 5 percent fine prominent irregular noncoherent cemented yellowish brown (10YR 5/6), moist, iron-manganese masses with diffuse boundaries in matrix; fragments; noneffervescent; very strongly acid, pH 5.0, pH indicator strip. Lab sample # 08N03586; slightly moist when described; observed in pit, small