IDENTIFIERS

  • Current Taxon Name (Soil Name): SAN MIGUEL
  • OSD
  • Series Extent
  • User Site ID: S1964CA073018
  • User Pedon ID: S1964CA073018
  • Vegetation Plot ID: S1964CA073018
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A2917
  • NCSS Pedon Lab Data NASIS Record ID - 37496
  • Print Date: 11/23/2024

    • 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: 32.5699997
  • Std. Longitude: -116.8730545
  • Datum: WGS84
  • Township: 19S
  • Range: 1E
  • Section: 27
  • PLSS Details: It is in the southwest 1/4 of the southwest 1/4
  • Location Description: The site is on the west side of Otay Mountain about 9.5 miles east and 1 mile north of San Ysidro, California.
  • State: California
  • County: CA073—San Diego
  • MLRA: 20—Southern California Mountains
  • Non-MLRA Soil Survey Area: CA638—San Diego County Area, California

    • PEDON

  • Describers Name: Gerald Kester and George Borst
  • Current Taxonomic Class: Fine, smectitic, thermic Typic Natrixeralfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 18
  • Correlated Information:
  • Soil Name - SAN MIGUEL
  • PSC - 20 to 58 cm.
  • Classificaton Date - 7/16/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - San Miguel
  • Classificaton Date - 10/22/1964
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: mountains
  • Runoff: high
  • Drainage Class: well
  • Surface Fragments: 3.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/22/1964 (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

    CEANO

    ERIOD

    RHUS

    Ceanothus

    Eriodictyon

    Rhus

    ceanothus

    yerba santa

    sumac

    —

    —

    —

    —

    —

    —

    —

    —

    —
    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

    38

    —

    —

    613

    —

    225

    381

    —

    —

    13.9

    23.3

    4.4

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 10 centimeters (0.0 to 3.9 inches); light yellowish brown (10YR 6/4), brown (7.5YR 4/4), moist; silt loam; moderate fine, and coarse granular structure; slightly hard, friable, nonsticky, nonplastic; 21.0 very fine roots; 3.0 fine and medium tubular and 3.0 fine vesicular pores; fragments; moderately acid, pH 6.0, unspecified; abrupt wavy boundary. Lab sample # 40A23008; dry when described;
    A2—10 to 20 centimeters (3.9 to 7.9 inches); very pale brown (10YR 7/3), yellowish brown (10YR 5/6), moist; silt loam; massive; hard when dry, friable, nonsticky, slightly plastic; 21.0 fine and medium roots; 21.0 fine vesicular pores; fragments; strongly acid, pH 5.2, unspecified; abrupt wavy boundary. Lab sample # 40A23009; dry when described;
    B21T—20 to 46 centimeters (7.9 to 18.1 inches); strong brown (7.5YR 5/6), yellowish red (5YR 4/6), moist; clay; strong coarse prismatic structure; extremely hard, firm, very sticky, very plastic; 0.5 medium roots and 21.0 fine roots; 0.5 fine and medium pores; 10 percent slickensides (pedogenic) and 75 percent pressure faces on faces of peds; fragments; strongly acid, pH 5.1, unspecified; clear wavy boundary. Lab sample # 40A23010; dry when described;
    B22T—46 to 58 centimeters (18.1 to 22.8 inches); yellowish brown (10YR 5/4), brown (7.5YR 4/4), moist; gravelly clay; moderate medium subangular blocky structure; very hard, friable, very sticky, moderately plastic; 21.0 very fine and fine roots; 0.5 fine pores; 30 percent pressure faces on faces of peds; fragments; strongly acid, pH 5.1, unspecified; abrupt irregular boundary. Lab sample # 40A23011; dry when described;
    R—58 to 79 centimeters (22.8 to 31.1 inches); light yellowish brown (2.5Y 6/4), light olive brown (2.5Y 5/4), moist; 21.0 fine and medium roots in cracks; fragments. Lab sample # 40A23012; dry when described;