IDENTIFIERS

  • Current Taxon Name (Soil Name): Elpaloalto
  • OSD
  • Series Extent
  • User Site ID: S2005ca085641227
  • User Pedon ID: S05CA085227
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 07N0675
  • NCSS Pedon Lab Data NASIS Record ID - 19553
  • Print Date: 4/27/2025

    • 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: 37.3562722
  • Std. Longitude: -122.1699528
  • Datum: WGS84
  • Township: 6S
  • Range: 3W
  • PLSS Details: unsectionized
  • Location Description: El Camino Park, Palo Alto, plant bed area along El Camino Real, north of park entrance, north of large oak tree.
  • Map Unit: 131—Urban land-Elpaloalto complex, 0 to 2 percent slopes
  • State: California
  • County: CA085—Santa Clara
  • MLRA: 14—Central California Coastal Valleys
  • Non-MLRA Soil Survey Area: CA641—Santa Clara Area, California, Western Part
  • 7.5 Minute USGS Quad: 37122-D2—Palo Alto, California

    • PEDON

  • Describers Name: William Reed, Lorena Benitez
  • Current Taxonomic Class: Fine-silty, mixed, superactive, thermic Pachic Haploxerolls
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 227
  • Correlated Information:
  • Soil Name - Elpaloalto
  • PSC - 25 to 100 cm.
  • Classificaton Date - 1/17/2008
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - xeric
  • Moisture Subclass - xeric
  • Sampled As Information:
  • Soil Name - Elpaloalto
  • Taxonomic Class - Fine-silty, mixed, superactive, thermic Pachic Hap
  • Taxon Kind - series
  • Classificaton Date - 4/11/2005
  • Moisture SUBClass - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium
  • Landform: flood plain
  • Slope Complexity: complex
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Alluvium group .
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/11/2005 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    —

    —

    21

    —

    310

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 21 centimeters (0.0 to 8.3 inches); very dark grayish brown (10YR 3/2) exterior, very dark brown (10YR 2/2) exterior, moist; slightly decomposed plant material; weak fine granular, and weak medium granular structure; loose, loose, nonsticky, nonplastic; very rapid permeability; 10.0 medium irregular and 5.0 fine irregular pores; fragments; noneffervescent; neutral, pH 6.7, pH meter; abrupt smooth boundary.; moist when described; observed in pit, small
    A—21 to 42 centimeters (8.3 to 16.5 inches); brown (10YR 4/3) broken face, very dark brown (10YR 2/2) broken face, moist; silt loam; 24 percent clay; moderate coarse subangular blocky, and moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderate permeability; 1.0 very fine roots; 14.0 very fine irregular pores; 10 percent by volume rounded indurated 2-20-75 millimeter mixed fragments; noneffervescent; moderately acid, pH 5.8, pH meter; abrupt smooth boundary. Lab sample # 07N04122; moist when described; observed in pit, small
    Bw1—42 to 65 centimeters (16.5 to 25.6 inches); brown (10YR 5/3) broken face, very dark brown (10YR 2/2) broken face, moist; silty clay loam; 34 percent clay; moderate coarse subangular blocky, and moderate medium subangular blocky structure; very hard, very firm, very sticky, very plastic; moderately slow permeability; 1.0 very fine roots; 8.0 very fine irregular and 2.0 very fine tubular and 2.0 fine irregular pores; fragments; noneffervescent; moderately acid, pH 5.8, pH meter; gradual smooth boundary. Lab sample # 07N04123; moist when described; observed in pit, small
    Bw2—65 to 90 centimeters (25.6 to 35.4 inches); brown (10YR 5/3) broken face, very dark brown (10YR 2/2) broken face, moist; silty clay loam; 35 percent clay; moderate medium subangular blocky structure; very hard, firm, very sticky, very plastic; moderately slow permeability; 0.5 very fine roots and 0.1 coarse roots; 4.0 very fine tubular and 10.0 very fine irregular pores; fragments; noneffervescent; moderately acid, pH 5.8, pH meter; gradual smooth boundary. Lab sample # 07N04124; moist when described; observed in pit, small
    Bw3—90 to 120 centimeters (35.4 to 47.2 inches); brown (10YR 5/3) broken face, very dark grayish brown (10YR 3/2) broken face, moist; silty clay loam; 35 percent clay; moderate medium subangular blocky structure; very hard, friable, very sticky, very plastic; moderately slow permeability; 0.1 medium roots and 0.1 coarse roots; 1.0 very fine tubular and 12.0 very fine irregular pores; fragments; noneffervescent; moderately acid, pH 5.6, pH meter; clear smooth boundary. Lab sample # 07N04125; moist when described; observed in pit, small
    Bw4—120 to 181 centimeters (47.2 to 71.3 inches); brown (10YR 5/3) broken face, very dark grayish brown (10YR 3/2) broken face, moist; silty clay loam; 35 percent clay; moderate medium subangular blocky structure; very hard, friable, very sticky, very plastic; moderately slow permeability; 0.1 medium roots and 0.1 coarse roots; 1.0 very fine tubular and 12.0 very fine irregular pores; fragments; noneffervescent; moderately acid, pH 5.6, pH meter; clear smooth boundary. Lab sample # 07N04126; moist when described; observed in pit, small
    C—181 to 240 centimeters (71.3 to 94.5 inches); brown (7.5YR 4/3) broken face, very dark brown (7.5YR 2.5/3) broken face, moist; silty clay loam; 37 percent clay; weak fine subangular blocky structure; very hard, firm, very sticky, very plastic; moderately slow permeability; 0.1 fine roots; 6.0 very fine irregular and 2.0 fine irregular pores; fragments; noneffervescent; slightly acid, pH 6.4, pH meter. Lab sample # 07N04127; moist when described; observed in pit, small