IDENTIFIERS

  • Current Taxon Name (Soil Name): Mokelumne
  • OSD
  • Series Extent
  • User Site ID: S1971-CA-05-058x
  • User Pedon ID: 71-CA-05-058x
  • Vegetation Plot ID: S1971-CA-05-058x
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - UCDAVIS
  • Lab Pedon # - UCD7105058
  • NCSS Pedon Lab Data NASIS Record ID - 42221
  • Print Date: 2/16/2025

    • 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: 38.1973300
  • Std. Longitude: -120.9154229
  • Datum: WGS84
  • Township: 4N
  • Range: 10E
  • Section: 18
  • PLSS Details: NW/4, SE/4
  • Map Unit: 5100—Ultic Haploxeralfs-Typic Palexerults-Aquultic haploxeralfs complex, 1 to 12 percent slopes
  • State: California
  • County: CA009—Calaveras
  • MLRA: 18—Sierra Nevada Foothills
  • Non-MLRA Soil Survey Area: CA630—Central Sierra Foothills Area, California, Parts of Calaveras and Tuolumne Counties
  • 7.5 Minute USGS Quad: 38120-B8—Wallace, California

    • PEDON

  • Describers Name: JAD
  • Current Taxonomic Class: Fine, mixed, active, thermic Ultic Palexeralfs
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Mokelumne
  • PSC - 51 to 91 cm.
  • Classificaton Date - 1/18/2018
  • Classifier - Julie Baker
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Fine, mixed, active, thermic Ultic Palexeralfs
  • Taxonomic Class - Fine, mixed, active, thermic Ultic Palexeralfs
  • PSC - 51 to 94 cm.
  • Classificaton Date - 12/17/2015
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: RES
  • Slope Complexity: simple
  • Drainage Class: moderately well
  • Geology: Mixed Gravelly Terrace formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/25/2009 (entry creation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, savanna
  • 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

    QUDO

    Quercus douglasii

    blue oak

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    densic material

    noncoherent

    91 -

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

    ochric epipedon

    argillic horizon

    densic materials

    densic contact

    0—51

    51—91

    91—

    91—

    —51—

    —40—

    —-

    —-
    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

    5.5

    —

    —

    81

    —

    0

    483

    —

    —

    5

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 15 centimeters (0.0 to 5.9 inches); grayish brown (10YR 5/2), dark brown (10YR 3/3), moist; fine sandy loam; weak fine subangular blocky structure; soft, very friable, slightly sticky; 21.0 very fine roots throughout and 21.0 fine roots throughout; 3.0 very fine irregular and 3.0 very fine tubular and 3.0 fine irregular and 3.0 fine tubular pores; fragments; strongly acid, pH 5.2; gradual smooth boundary. Lab sample # UCD01910
    A2—15 to 38 centimeters (5.9 to 15.0 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; fine sandy loam; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky; 3.0 medium roots throughout and 3.0 fine roots throughout; 3.0 very fine irregular and 3.0 very fine tubular and 3.0 fine irregular and 3.0 fine tubular pores; fragments; very strongly acid, pH 4.8; clear irregular boundary. Lab sample # UCD01911
    AB—38 to 51 centimeters (15.0 to 20.1 inches); light gray (10YR 7/2), pale brown (10YR 6/3), moist; loam; weak fine subangular blocky structure; hard, very friable, slightly sticky, slightly plastic; 0.5 medium roots throughout and 0.5 coarse roots throughout; 3.0 very fine tubular and 3.0 fine tubular pores; fragments; very strongly acid, pH 4.5; abrupt irregular boundary. Lab sample # UCD01912
    Bt—51 to 91 centimeters (20.1 to 35.8 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay; strong coarse prismatic structure; extremely hard, extremely firm, very sticky, very plastic; 0.5 coarse roots throughout; 0.5 medium tubular and 0.5 fine tubular pores; 30 percent clay films on all faces of peds and 30 percent clay films on surfaces along pores; fragments; extremely acid, pH 3.7; clear irregular boundary. Lab sample # UCD01913
    Cd—91 to 91 centimeters (35.8 to 35.8 inches); gravelly clay; 15 percent by volume indurated 2-35-75 millimeter unspecified fragments; extremely acid, pH 3.8. Lab sample # UCD01914