IDENTIFIERS

  • Current Taxon Name (Soil Name): Wilkeson
  • OSD
  • Series Extent
  • User Site ID: S1984WA015011
  • User Pedon ID: 84WA015011
  • Vegetation Plot ID: S1984WA015011
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 84P0917
  • NCSS Pedon Lab Data NASIS Record ID - 55705
  • Print Date: 2/19/2025

    • 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: 46.3250008
  • Std. Longitude: -122.6250000
  • Datum: WGS84
  • State: Washington
  • County: WA015—Cowlitz
  • MLRA: 2—Willamette and Puget Sound Valleys

    • PEDON

  • Describers Name: R. F. Pringle, D. Stockman, and L. Klameth
  • Current Taxonomic Class: Clayey, mixed, active, mesic Typic Haploxerults
  • Current Taxon Kind: taxadjunct
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 11
  • Correlated Information:
  • Soil Name - Wilkeson
  • PSC - 43 to 93 cm.
  • Classificaton Date - 2/1/2010
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Wilkeson
  • Taxonomic Class - Fine-loamy, mixed, mesic Ultic Haploxeralf
  • Taxon Kind - series
  • Classificaton Date - 9/1/1984
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: hillside or mountainside
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Runoff: low
  • Drainage Class: well
  • Flooding: frequent flooding
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1984 (actual site observation date)
  • Microrelief Elevation: 35
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    PSME

    THPL

    TSHE

    Pseudotsuga menziesii

    Thuja plicata

    Tsuga heterophylla

    Douglas-fir

    western redcedar

    western hemlock

    —

    —

    —

    —

    —

    —

    —

    —

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    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

    4

    —

    —

    488

    —

    0

    165

    —

    —

    10

    16

    4

    —

    —

    —

    —

    —

    —

    —

    —
    O—0 to 15 centimeters (0.0 to 5.9 inches); unweathered bedrock; fragments; abrupt smooth boundary. Not sampled.
    A1—15 to 34 centimeters (5.9 to 13.4 inches);, very dark grayish brown (10YR 3/2) interior and very dark grayish brown (10YR 3/2) crushed, moist; silty clay loam; moderate fine angular blocky structure; friable, moderately sticky, moderately plastic; 0.5 medium roots between peds and 2.5 fine roots between peds; 0.5 fine continuous tubular pores; 10 percent by volume 2-39-75 millimeter mixed fragments; gradual wavy boundary. Lab sample # 84P05191. few medium roots between peds; common fine roots between peds
    E—34 to 58 centimeters (13.4 to 22.8 inches);, dark brown (10YR 3/3) interior and dark brown (10YR 3/3) crushed, moist; very gravelly silt loam; moderate fine angular blocky structure; friable, slightly sticky, slightly plastic; 2.5 fine roots between peds; 0.5 very fine continuous tubular pores; fragments; gradual wavy boundary. Lab sample # 84P05192. common fine roots between peds
    Bt1—58 to 81 centimeters (22.8 to 31.9 inches);, dark yellowish brown (10YR 4/4) interior and dark yellowish brown (10YR 4/4) crushed, moist; gravelly silty clay loam; moderate medium angular blocky, and moderate fine angular blocky structure; friable, moderately sticky, moderately plastic; 0.5 very fine roots and 0.5 medium roots; 0.5 fine continuous tubular pores; 15 percent faint , moist, clay films on faces of peds; 2 percent by volume 250-425-600 millimeter igneous, unspecified fragments and 15 percent by volume 75-162-250 millimeter igneous, unspecified fragments and 40 percent by volume 2-39-75 millimeter igneous, unspecified fragments; gradual wavy boundary. Lab sample # 84P05193. few clay films surface features on faces of peds; few medium roots; few very fine roots; patchy - phpvsfiid 217853; patchy - phpvsfiid 217853
    Bt2—81 to 114 centimeters (31.9 to 44.9 inches);, dark brown (7.5YR 3/4) interior and dark yellowish brown (10YR 4/4) crushed, moist; silty clay loam; moderate medium angular blocky, and moderate fine angular blocky structure; firm, moderately sticky, moderately plastic; 0.5 medium roots in cracks and 0.5 fine roots between peds; 2.5 fine continuous tubular pores; 2 percent distinct manganese or iron-manganese stains throughout and 15 percent faint clay films on faces of peds; fragments; gradual wavy boundary. Lab sample # 84P05194; dry when described;. few clay films surface features on faces of peds; very few manganese or iron-manganese stains surface features throughout; few medium roots in cracks; few fine roots between peds; discontinuous - phpvsfiid 217854; patchy - phpvsfiid 217855; discontinuous - phpvsfiid 217854; patchy - phpvsfiid 217855
    Bt3—114 to 143 centimeters (44.9 to 56.3 inches);, dark brown (7.5YR 3/4) interior and dark brown (7.5YR 3/4) crushed, moist; silty clay loam; moderate medium angular blocky, and moderate fine angular blocky structure; firm, moderately sticky, moderately plastic; 0.5 fine roots throughout; 0.5 medium continuous tubular and 0.5 fine continuous tubular pores; 15 percent faint clay films on faces of peds; fragments; gradual wavy boundary. Lab sample # 84P05195; dry when described;. few clay films surface features on faces of peds; few fine roots throughout; patchy - phpvsfiid 217856; patchy - phpvsfiid 217856
    BC—143 to 159 centimeters (56.3 to 62.6 inches);, 80 percent brown (7.5YR 4/4) interior and 20 percent brownish yellow (10YR 6/6) interior and brown (7.5YR 4/4) crushed, moist; silty clay loam; strong medium angular blocky structure; extremely firm*, moderately sticky, moderately plastic; 15 percent very dark brown (7.5YR 2/2) manganese or iron-manganese stains on faces of peds and 37 percent brown (7.5YR 4/4) clay films on faces of peds; fragments; abrupt wavy boundary. Lab sample # 84P05196; dry when described;. Occasional fine root between cracks, continuous clay films along fractures. Disintragrading rock.; common clay films surface features on faces of peds; few manganese or iron-manganese stains surface features on faces of peds; discontinuous - phpvsfiid 217858; continuous - phpvsfiid 217857; discontinuous - phpvsfiid 217858; continuous - phpvsfiid 217857