IDENTIFIERS

  • Current Taxon Name (Soil Name): Johnnyjack
  • OSD
  • Series Extent
  • User Site ID: S2007CA601805
  • User Pedon ID: S2007CA601805
  • Vegetation Plot ID: S2007CA601805
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 07N0357
  • NCSS Pedon Lab Data NASIS Record ID - 18870
  • Print Date: 11/23/2024

    • 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: 40.2787389
  • Std. Longitude: -124.2452019
  • Datum: WGS84
  • Township: 2s
  • Range: 2W
  • Section: 24
  • Location Description: About 8 miles northwest of the town of Honeydew. Mattole Rd between Honeydew and Petrolia
  • Map Unit: 188—Johnnyjack, 0 to 2 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 5—Siskiyou-Trinity Area
  • Non-MLRA Soil Survey Area: CA601—Humboldt County, South Part, California
  • 7.5 Minute USGS Quad: 40124-C2—Buckeye Mountain, California

    • PEDON

  • Describers Name: JWH, JTB
  • Current Taxonomic Class: Fine-silty, mixed, superactive, thermic Cumulic Ultic Haploxerolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 805
  • Correlated Information:
  • Soil Name - Johnnyjack
  • PSC - 25 to 100 cm.
  • Classificaton Date - 12/17/2009
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Mattole
  • Classificaton Date - 1/8/2007
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium
  • Landscape: river valley
  • Landform: terrace
  • Geomorphic Component Terraces: tread
  • Hill Slope Profile: backslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Quaternary Alluvium member.
  • Surface Fragments: 0.00 percent nonflat subrounded strongly coherent cemented 2- to 75-millimeter sandstone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/8/2007 (actual site observation date)
  • Air Photo ID: 6247-128
  • Surface Water Kind: none observed
  • Plant Association Name: pasture
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • 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

    2GA

    2GP

    AVENA

    —

    —

    Avena

    Grass, annual

    Grass, perennial

    oat

    —

    —

    —

    —

    —

    —

    —

    —

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

    mollic epipedon

    cambic horizon

    0—70

    70—155

    —70—

    —85—
    Site Soil Temperature
    Site Obs. Date Depth Sensor Kind Temperature
    cm C

    1/8/2007

    50

    —

    9
    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

    1

    —

    —

    37

    —

    45

    2030

    —

    260

    13

    —

    —

    15

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); grayish brown (10YR 5/2) rubbed, very dark brown (10YR 2/2) rubbed, moist; silt loam; 20 percent clay; weak very fine subangular blocky, and weak fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; 1.0 very fine roots throughout and 1.0 fine roots throughout; 1.0 very fine tubular and 1.0 fine tubular pores; 0 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; gradual smooth boundary. Lab sample # 07N01854; moist when described; observed in pit, small
    A1—20 to 45 centimeters (7.9 to 17.7 inches); grayish brown (10YR 5/2) broken face, very dark brown (10YR 2/2) broken face, moist; silt loam; 20 percent clay; moderate fine granular, and moderate medium granular structure; moderately hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots throughout and 1.0 fine roots throughout; 1.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular pores; 0 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; strongly acid, pH 5.4, chlorophenol red; clear smooth boundary. Lab sample # 07N01855; moist when described; observed in pit, small
    A2—45 to 70 centimeters (17.7 to 27.6 inches); brown (10YR 5/3) broken face, very dark grayish brown (10YR 3/2) broken face, moist; silt loam; 23 percent clay; moderate medium granular, and moderate fine granular structure; moderately hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots throughout; 1.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular pores; 2 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; strongly acid, pH 5.4, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small
    Bw1—70 to 125 centimeters (27.6 to 49.2 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; loam; 18 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 very fine roots throughout; 0.5 very fine tubular and 0.5 medium tubular and 0.5 fine tubular pores; 2 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; strongly acid, pH 5.4, chlorophenol red; gradual smooth boundary.; moist when described; observed in pit, small
    BC—122 to 152 centimeters (48.0 to 59.8 inches); light yellowish brown (2.5Y 6/3) broken face, olive brown (2.5Y 4/3) broken face, moist; gravelly clay loam; 29 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; moderately hard, friable, slightly sticky, moderately plastic; 0.5 very fine roots throughout; 3.0 very fine tubular and 1.0 fine tubular pores; 25 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; moderately acid, pH 5.8, chlorophenol red; gradual smooth boundary.; moist when described; observed in pit, small
    Bw2—125 to 155 centimeters (49.2 to 61.0 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; fine sandy loam; 16 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 very fine tubular and 0.5 medium tubular and 0.5 fine tubular pores; 5 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; moderately acid, pH 5.6, chlorophenol red; clear smooth boundary.; moist when described; observed in pit, small
    C—155 to 180 centimeters (61.0 to 70.9 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; very gravelly sandy loam; 16 percent clay; massive; slightly hard, very friable, nonsticky, nonplastic; 40 percent by volume nonflat rounded indurated 2-20-75 millimeter sedimentary, unspecified fragments; noneffervescent; moderately acid, pH 5.6, chlorophenol red.; moist when described; observed in pit, small