IDENTIFIERS

  • Current Taxon Name (Soil Name): Umpa
  • OSD
  • Series Extent
  • User Site ID: S1968CA061007
  • User Pedon ID: S1968CA061007
  • Vegetation Plot ID: S1968CA061007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A2983
  • NCSS Pedon Lab Data NASIS Record ID - 38112
  • Print Date: 11/22/2024

    • 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: 39.2186127
  • Std. Longitude: -120.1600037
  • Datum: WGS84
  • Township: 16N
  • Range: 16E
  • Section: 23
  • PLSS Details: 0.4 mile north of SE corner
  • Location Description: 75 feet SW of logging road.
  • State: California
  • County: CA061—Placer
  • MLRA: 22A—Sierra Nevada and Tehachapi Mountains
  • Non-MLRA Soil Survey Area: CA693—Tahoe Basin Area, California and Nevada

    • PEDON

  • Describers Name: G. M. Kennedy and G. L. Anderson
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, frigid Dystric Xerochrepts
  • Current Taxon Kind: variant
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 7
  • Correlated Information:
  • Soil Name - Umpa
  • PSC - 25 to 89 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Umpa
  • Classificaton Date - 9/19/1968
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/19/1968 (actual site observation date)
  • 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

    ARNE

    PIMO3

    Arctostaphylos nevadensis

    Pinus monticola

    pinemat manzanita

    western white pine

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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

    8

    —

    —

    2347

    —

    90

    940

    —

    —

    4.4

    13.9

    -5

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    O1—0 to 3 centimeters (0.0 to 1.2 inches); fragments. Lab sample # 40A23483; dry when described;. fresh and decomposed conifer needles. Not sampled.
    A1—3 to 11 centimeters (1.2 to 4.3 inches); dark reddish brown (5YR 3/3), grayish brown (10YR 5/2), dry; gravelly sandy loam; weak coarse platy, and weak coarse granular structure; soft, very friable, nonsticky, nonplastic; 21.0 very fine and fine roots and 3.0 medium roots and 0.5 coarse roots; 3.0 very fine interstitial and tubular pores; 15 percent by volume 2-39-75 millimeter unspecified fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # 40A23484; dry when described;
    A3—11 to 31 centimeters (4.3 to 12.2 inches); reddish brown (5YR 4/4), pinkish gray (7.5YR 6/2), dry; gravelly sandy loam; massive; slightly hard, friable, nonsticky, nonplastic; 21.0 very fine and fine roots and medium and coarse roots; 3.0 very fine and 0.1 fine tubular pores; 5 percent by volume 75-162-250 millimeter unspecified fragments and 25 percent by volume 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # 40A23485; dry when described;
    B1—31 to 54 centimeters (12.2 to 21.3 inches); reddish brown (5YR 4/3), pinkish gray (7.5YR 6/2), dry; gravelly sandy loam; massive; slightly hard, friable, nonsticky, nonplastic; 21.0 very fine and fine roots and medium and coarse roots; 3.0 very fine and 0.1 fine tubular pores; 5 percent by volume 75-162-250 millimeter unspecified fragments and 15 percent by volume 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.5, hellige-truog; clear irregular boundary. Lab sample # 40A23486; dry when described;
    B2—54 to 92 centimeters (21.3 to 36.2 inches); reddish gray (5YR 5/2), pinkish gray (5YR 6/2), dry; gravelly loam; massive; slightly hard, friable, nonsticky, slightly plastic; 3.0 very fine and fine roots and 21.0 medium and coarse roots; 3.0 very fine interstitial and tubular pores; 30 percent clay films in root channels and/or pores; 25 percent by volume 2-39-75 millimeter unspecified fragments and 50 percent by volume 75-162-250 millimeter unspecified fragments; very strongly acid, pH 4.5, hellige-truog; clear irregular boundary. Lab sample # 40A23487; dry when described;
    R—92 to 128 centimeters (36.2 to 50.4 inches); fragments. Lab sample # 40A23488; dry when described;. partially weathered andesite having a distinct purple color.