IDENTIFIERS

  • Current Taxon Name (Soil Name): SUPAN
  • OSD
  • Series Extent
  • User Site ID: S1977CA035111
  • User Pedon ID: S1977CA035111
  • Vegetation Plot ID: S1977CA035111
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 78P0196
  • NCSS Pedon Lab Data NASIS Record ID - 45750
  • Print Date: 2/17/2025

    • 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: 40.5466652
  • Std. Longitude: -121.2644424
  • Datum: WGS84
  • Township: 32N
  • Range: 6E
  • Section: 13
  • PLSS Details: NWSE
  • Location Description: Back hoe pit. Lassen County, California.
  • State: California
  • County: CA035—Lassen
  • MLRA: 22—Sierra Nevada Range
  • Non-MLRA Soil Survey Area: CA708—Lassen National Forest, California, Parts of Lassen, Plumas, Butte, Shasta, and Siskiyou Counties
  • 7.5 Minute USGS Quad: 40121-E3—Prospect Peak, California

    • PEDON

  • Current Taxonomic Class: Fine-loamy, mixed Ultic Argixerolls
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 111
  • Correlated Information:
  • Soil Name - SUPAN
  • Classificaton Date - 3/12/2002
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Snd
  • Classificaton Date - 6/1/1977
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: volcanic flat
  • Slope Complexity: simple
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1977 (actual site observation date)
  • Air Photo ID: 11-143
  • 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

    SALVI

    Salvia

    sage

    —

    —

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

    argillic horizon

    34—86

    —-
    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

    0

    —

    —

    1661

    —

    825

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    O1—0 to 2 centimeters (0.0 to 0.8 inches); fragments.; observed in trench
    A1—2 to 14 centimeters (0.8 to 5.5 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2), moist; loamy sand; weak fine granular parts to weak fine single grain; soft, very friable, nonsticky, nonplastic; rapid permeability; 21.0 very fine roots and 21.0 fine roots; 21.0 very fine tubular and 21.0 fine tubular and 21.0 coarse interstitial pores; fragments; slightly acid, pH 6.5; gradual smooth boundary.; observed in trench
    B1—14 to 36 centimeters (5.5 to 14.2 inches); brown (10YR 4/3), 10YR 2/3 (10YR 2/3), moist; sandy loam; moderate fine subangular blocky, and moderate medium subangular blocky structure; soft, very friable, nonsticky, slightly plastic; moderately rapid permeability; 3.0 very fine roots and 0.5 medium roots and 3.0 fine roots; 21.0 very fine interstitial and 3.0 very fine tubular and 21.0 fine interstitial and 3.0 fine tubular pores; fragments; slightly acid, pH 6.5; gradual smooth boundary.; observed in trench
    B21T—36 to 58 centimeters (14.2 to 22.8 inches); dark yellowish brown (10YR 4/4), dark reddish brown (5YR 3/3), moist; loam; strong fine subangular blocky, and strong medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; moderate permeability; 3.0 medium roots and 3.0 fine roots and 3.0 coarse roots; 21.0 very fine interstitial and 3.0 very fine tubular and 21.0 fine interstitial and 3.0 fine tubular pores; 10 percent clay films on all faces of peds and 10 percent clay films on surfaces along pores; fragments; neutral, pH 6.6; abrupt smooth boundary. Lab sample # 78P01009; observed in trench
    B22T—58 to 88 centimeters (22.8 to 34.6 inches); yellowish brown (10YR 5/4), dark brown (10YR 3/3), moist; gravelly clay loam; strong fine subangular blocky structure; very hard, very friable, moderately sticky, moderately plastic; slow permeability; 0.5 medium roots and 0.5 fine roots; 3.0 very fine tubular and 3.0 medium interstitial and 3.0 fine interstitial and 3.0 fine tubular and 3.0 coarse interstitial pores; 30 percent clay films on all faces of peds and 30 percent clay films on surfaces along pores; fragments; neutral, pH 6.6; clear wavy boundary.; observed in trench
    2C—88 to 117 centimeters (34.6 to 46.1 inches); yellowish brown (10YR 5/4), dark brown (10YR 3/3), moist; very gravelly loam; massive parts to single grain; slightly hard, friable, slightly sticky, slightly plastic; moderately slow permeability; 0.5 medium roots; 21.0 very fine interstitial and 0.5 very fine tubular and 21.0 fine interstitial and 0.5 fine tubular pores; 10 percent clay films on surfaces along pores; fragments; neutral, pH 7.0; clear wavy boundary. Lab sample # 78P01010; observed in trench
    3C—117 to 157 centimeters (46.1 to 61.8 inches); yellowish brown (10YR 5/4), dark brown (10YR 3/3), moist; clay loam; massive; extremely hard, firm, moderately sticky, moderately plastic; slow permeability; 21.0 medium tubular and 3.0 fine interstitial and 21.0 fine tubular pores; 75 percent clay films on surfaces along pores and 75 percent clay films between sand grains; fragments; neutral, pH 7.0.; observed in trench