IDENTIFIERS

  • Current Taxon Name (Soil Name): THOMS
  • OSD
  • Series Extent
  • User Site ID: S1972CA049015
  • User Pedon ID: S1972CA049015
  • Vegetation Plot ID: S1972CA049015
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 72C0116
  • NCSS Pedon Lab Data NASIS Record ID - 44050
  • Print Date: 3/2/2025

    • 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: 41.5616684
  • Std. Longitude: -120.3952789
  • Datum: WGS84
  • Township: 43N
  • Range: 14E
  • Section: 18
  • PLSS Details: The following profile is located 1050 feet south and 1618 feet west of the East 1/4 corner
  • Location Description: Modoc County, California. On the south side of State Highway 299.
  • State: California
  • County: CA049—Modoc
  • MLRA: 21—Klamath and Shasta Valleys and Basins
  • Non-MLRA Soil Survey Area: CA603—Modoc County, California, Alturas Area
  • 7.5 Minute USGS Quad: 41120-F3—Davis Creek, California

    • PEDON

  • Current Taxonomic Class: Loamy, mixed, shallow Xeric Argidurids
  • Pedon Type: OSD pedon
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 15
  • Correlated Information:
  • Soil Name - THOMS
  • PSC - 15 to 33 cm.
  • Classificaton Date - 4/11/2007
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Thoms
  • Classificaton Date - 6/1/1972
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hummocky lake terrace
  • Runoff: very low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1972 (actual site observation date)
  • Air Photo ID: 15DD-33
  • Surface Cover Properties:
  • 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

    ARAR8

    BRTE

    POA

    Artemisia arbuscula

    Bromus tectorum

    Poa

    little sagebrush

    cheatgrass

    bluegrass

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

    ochric epipedon

    argillic horizon

    duripan

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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

    2

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    1531.6

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    270

    305

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    9

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    A1—0 to 15 centimeters (0.0 to 5.9 inches); brown (10YR 5/3), very dark grayish brown (10YR 3/2), moist; extremely cobbly loam; moderate medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; 21.0 very fine roots; 0.5 very fine tubular and 3.0 very fine interstitial pores; 50 percent by volume 75-?-250 millimeter unspecified fragments; slightly acid, pH 6.3; clear smooth boundary. Lab sample # 72C00690
    A1—0 to 15 centimeters (0.0 to 5.9 inches); fragments. Lab sample # 72C00695
    B2T—15 to 23 centimeters (5.9 to 9.1 inches); brown (7.5YR 4/4), reddish brown (5YR 4/4), moist; clay loam; moderate coarse angular blocky structure; hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine tubular pores; 30 percent clay films between sand grains and 30 percent clay films on surfaces along pores and 30 percent clay films on all faces of peds; 5 percent by volume 75-?-250 millimeter unspecified fragments and 10 percent by volume 2-?-75 millimeter unspecified fragments; neutral, pH 6.8; abrupt smooth boundary. Lab sample # 72C00691
    B3T—23 to 33 centimeters (9.1 to 13.0 inches); reddish brown (5YR 4/3) and reddish brown (5YR 4/4) clay loam; moderate medium angular blocky structure; hard, friable, moderately sticky, moderately plastic; 0.5 very fine interstitial and 0.5 very fine tubular pores; 30 percent clay films on all faces of peds and 30 percent clay films on surfaces along pores and 30 percent clay films between sand grains; 5 percent by volume 75-?-250 millimeter unspecified fragments and 10 percent by volume 2-?-75 millimeter unspecified fragments; neutral, pH 6.8; abrupt smooth boundary. Lab sample # 72C00692
    C1SIM—33 to 60 centimeters (13.0 to 23.6 inches); reddish yellow (7.5YR 6/6) bedrock; massive; very hard, very firm by silica; silica coats on bottom of rock fragments; 3 percent fine distinct very dark gray (N 3/0) manganese masses; 40 percent by volume 2-?-75 millimeter unspecified fragments and 50 percent by volume 75-?-250 millimeter unspecified fragments; abrupt smooth boundary. Lab sample # 72C00693
    C2SIM—60 to 107 centimeters (23.6 to 42.1 inches); reddish yellow (7.5YR 6/6) bedrock; massive; very hard, very firm by silica; silica coats on surfaces along pores and silica coats between sand grains and silica coats on bottom of rock fragments; 3 percent fine distinct very dark gray (N 3/0) manganese masses; 40 percent by volume 2-?-75 millimeter unspecified fragments and 50 percent by volume 75-?-250 millimeter unspecified fragments. Lab sample # 72C00694