IDENTIFIERS

  • Current Taxon Name (Soil Name): Mudhorse
  • OSD
  • Series Extent
  • User Site ID: 04CA023605039
  • User Pedon ID: 04CA023605039
  • Vegetation Plot ID: 04CA023605039
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 05N0644
  • NCSS Pedon Lab Data NASIS Record ID - 18617
  • Print Date: 11/21/2024

    • 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: 40.8336667
  • Std. Longitude: -123.7343889
  • Datum: WGS84
  • Township: 5
  • Range: 4
  • Section: 9
  • Location Description: Grouse Mountain
  • Map Unit: 473—Highoaks-Noisy-Mudhorse complex, 9 to 50 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 5—Siskiyou-Trinity Area
  • Non-MLRA Soil Survey Area: CA605—Humboldt and Del Norte Area, California
  • 7.5 Minute USGS Quad: 40123-G6—Grouse Mountain, California

    • PEDON

  • Describers Name: Bruce Lindsay
  • Current Taxonomic Class: Fine-loamy, mixed, active, mesic Ultic Palexeralfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 439
  • Correlated Information:
  • Soil Name - Mudhorse
  • PSC - 30 to 80 cm.
  • Classificaton Date - 6/1/2012
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - xeric
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Mudhorse
  • Classificaton Date - 7/1/2004
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium and residuum derived from mudstone
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank
  • Hill Slope Profile: backslope
  • Slope Complexity: simple
  • Slope Shape Across: concave
  • Slope Shape Down: concave
  • Runoff: high
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/2004 (actual site observation date)
  • Air Photo ID: 6246-53
  • Surface Water Kind: none observed
  • 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
  • Current Air Temp - 25
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CYNOS2

    PSME

    QUGA4

    QUKE

    Cynosurus

    Pseudotsuga menziesii

    Quercus garryana

    Quercus kelloggii

    dogstail grass

    Douglas-fir

    Oregon white oak

    California black oak

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

    ochric epipedon

    argillic horizon

    aquic conditions

    0—30

    30—200

    48—200

    —30—

    —170—

    —152—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    7/1/2004

    50

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    17
    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

    35

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    1057

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    230

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    Oi—0 to 4 centimeters (0.0 to 1.6 inches); very dark brown (10YR 2/2), very dark brown (10YR 2/2), moist; slightly decomposed plant material; 10.0 fine irregular pores; fragments; moderately acid, pH 5.6, pH indicator strip; abrupt smooth boundary. Lab sample # 05N03738; dry when described; observed in cut
    A—4 to 12 centimeters (1.6 to 4.7 inches); brown (10YR 4/3), very dark grayish brown (10YR 3/2), moist; gravelly loam; 25 percent clay; weak medium subangular blocky parts to moderate fine granular structure; soft, very friable, nonsticky, nonplastic; moderate permeability; 30.0 very fine roots and 5.0 medium roots and 10.0 fine roots; 10.0 very fine tubular and 5.0 fine tubular pores; 20 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter mudstone fragments; moderately acid, pH 5.6, pH indicator strip; clear smooth boundary. Lab sample # 05N03739; dry when described; observed in cut
    AB—12 to 30 centimeters (4.7 to 11.8 inches); dark yellowish brown (10YR 4/4), brown (10YR 4/3), moist; loam; 26 percent clay; strong fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; moderate permeability; 10.0 medium roots throughout and 10.0 fine roots throughout; 15.0 very fine tubular and 5.0 medium tubular and 10.0 fine tubular pores; 30 percent faint clay films on all faces of peds; 5 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter mudstone fragments; strongly acid, pH 5.4, pH indicator strip; clear wavy boundary. Lab sample # 05N03740; dry when described; observed in cut
    Bt—30 to 48 centimeters (11.8 to 18.9 inches); olive brown (2.5Y 4/4), olive brown (2.5Y 4/4), moist; clay loam; 30 percent clay; strong fine angular blocky structure; hard, firm, very sticky, very plastic; moderately slow permeability; 10.0 medium roots throughout and 10.0 fine roots throughout; 5.0 very fine tubular and 2.0 fine tubular and 1.0 coarse tubular pores; 30 percent faint clay films on all faces of peds; 5 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter mudstone fragments; strongly acid, pH 5.4, pH indicator strip; clear wavy boundary. Lab sample # 05N03741; dry when described; observed in cut
    Btg1—48 to 82 centimeters (18.9 to 32.3 inches); dark grayish brown (2.5Y 4/2), very dark grayish brown (2.5Y 3/2), moist; clay loam; 36 percent clay; strong medium angular blocky, and strong fine angular blocky structure; hard, very firm, very sticky, very plastic; moderately slow permeability; 10.0 medium roots and 5.0 fine roots and 2.0 coarse roots; 10.0 medium tubular and 5.0 coarse tubular pores; 20 percent distinct clay films on all faces of peds; 40 percent fine very weakly coherent cemented yellowish red (5YR 4/6) iron-manganese masses; 5 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter mudstone fragments; strongly acid, pH 5.4, pH indicator strip; clear wavy boundary. Lab sample # 05N03742; dry when described; observed in cut
    Btg2—82 to 130 centimeters (32.3 to 51.2 inches); very dark gray (2.5Y 3/1), very dark gray (2.5Y 3/1), moist; clay loam; 37 percent clay; moderate coarse subangular blocky parts to strong very fine angular blocky, and moderate medium subangular blocky parts to strong very fine angular blocky structure; very hard, very firm, very sticky, very plastic; moderately slow permeability; 5.0 fine roots; 5.0 medium tubular pores; 20 percent distinct clay films on all faces of peds; 40 percent fine extremely weakly coherent cemented yellowish red (5YR 4/6) iron-manganese masses; 5 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter mudstone fragments; strongly acid, pH 5.2, pH indicator strip; gradual wavy boundary. Lab sample # 05N03743; dry when described; observed in cut
    Btg3—130 to 200 centimeters (51.2 to 78.7 inches); very dark gray (2.5Y 3/1), very dark gray (2.5Y 3/1), moist; clay loam; 39 percent clay; moderate coarse subangular blocky parts to strong very fine angular blocky, and moderate medium subangular blocky parts to strong very fine angular blocky structure; very hard, very firm, very sticky, very plastic; moderately slow permeability; 5.0 fine roots; 5.0 medium tubular pores; 20 percent distinct clay films on all faces of peds; 60 percent fine very weakly coherent cemented yellowish red (5YR 4/6) iron-manganese masses; 5 percent by volume nonflat subangular very strongly coherent cemented 2-38-75 millimeter mudstone fragments; strongly acid, pH 5.2, pH indicator strip. Lab sample # 05N03744; dry when described; observed in cut