IDENTIFIERS

  • Current Taxon Name (Soil Name): San Miguel
  • OSD
  • Series Extent
  • User Site ID: S1966CA073005
  • User Pedon ID: S1966CA073005
  • Vegetation Plot ID: S1966CA073005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A2885
  • NCSS Pedon Lab Data NASIS Record ID - 37464
  • 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: 32.8466682
  • Std. Longitude: -117.1344452
  • Datum: WGS84
  • Township: 15S
  • Range: 2W
  • Section: 19
  • PLSS Details: 100 feet east and 50 feet north of the southwest corner
  • Location Description: Miramar Transect No. 2, station 21.1.
  • State: California
  • County: CA073—San Diego
  • MLRA: 19—Southern California Coastal Plains and Mountains
  • Non-MLRA Soil Survey Area: CA638—San Diego County Area, California

    • PEDON

  • Describers Name: George Borst, Roy Bowman, David Estrada, and Gerald Kester
  • Current Taxonomic Class: Fine, mixed, active, thermic Natric Haploxeralfs
  • Current Taxon Kind: series
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - San Miguel
  • PSC - 89 to 100 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - San Miguel
  • Classificaton Date - 6/14/1966
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: flat, marine terrace
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/14/1966 (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

    ERSM

    Eriogonum smithii

    flat-top buckwheat

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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

    1

    —

    —

    133

    —

    254

    —

    —

    —

    20

    12.8

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    A1—0 to 8 centimeters (0.0 to 3.1 inches); grayish brown (10YR 5/2), very dark grayish brown (10YR 3/2), moist; sandy loam; weak fine granular structure; slightly hard, very friable, slightly sticky, nonplastic; 21.0 very fine and fine roots; very fine interstitial and 3.0 fine tubular pores; fragments; moderately acid, pH 5.9, unspecified; abrupt smooth boundary. Lab sample # 40A22745; dry when described;
    A21—8 to 36 centimeters (3.1 to 14.2 inches); pale brown (10YR 6/3), brown (10YR 4/3), moist; loam; massive; hard when dry, very friable, slightly sticky, slightly plastic; 0.5 fine and medium roots; 21.0 fine vesicular and 3.0 fine tubular pores; fragments; moderately acid, pH 5.8, unspecified; clear smooth boundary. Lab sample # 40A22746; dry when described;
    A22—36 to 61 centimeters (14.2 to 24.0 inches); very pale brown (10YR 7/3), brown (10YR 5/3), moist; loam; massive; hard when dry, very friable, slightly sticky, slightly plastic; 0.5 fine and medium roots; 21.0 fine vesicular and 3.0 fine tubular pores; fragments; very strongly acid, pH 4.8, unspecified; gradual smooth boundary. Lab sample # 40A22747; dry when described;
    B1—61 to 89 centimeters (24.0 to 35.0 inches); pinkish gray (7.5YR 6/2) and pale brown (10YR 6/3), dark grayish brown (10YR 4/2), moist; clay loam; massive; very hard, friable, slightly sticky, slightly plastic; 0.5 fine roots; 0.5 very fine tubular pores; 30 percent clay films in root channels and/or pores; fragments; very strongly acid, pH 4.8, unspecified; clear smooth boundary. Lab sample # 40A22748; dry when described;
    B21T—89 to 114 centimeters (35.0 to 44.9 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/2), moist; clay; weak medium prismatic parts to coarse angular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 fine roots; 0.5 very fine tubular pores; 30 percent clay films on faces of peds; fragments; very strongly acid, pH 4.5, unspecified; gradual smooth boundary. Lab sample # 40A22749; dry when described;
    B22T—114 to 145 centimeters (44.9 to 57.1 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay; weak medium and coarse angular blocky structure; extremely hard, firm, moderately sticky, moderately plastic; 0.1 fine roots; 0.1 very fine tubular pores; fragments; very strongly acid, pH 4.5, unspecified; gradual smooth boundary. Lab sample # 40A22750; dry when described;
    B23T—145 to 234 centimeters (57.1 to 92.1 inches); gray (10YR 5/1), dark gray (10YR 4/1), moist; clay; weak coarse angular blocky structure; extremely hard, firm, moderately sticky, moderately plastic; 0.1 fine roots; 0.1 very fine tubular pores; fragments; very strongly acid, pH 4.5, unspecified; clear smooth boundary. Lab sample # 40A22751; dry when described;
    B3—234 to 249 centimeters (92.1 to 98.0 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay loam; massive; very hard, friable, slightly sticky, slightly plastic; fragments; very strongly acid, pH 4.5, unspecified. Lab sample # 40A22752; dry when described;