IDENTIFIERS

  • Current Taxon Name (Soil Name): Cortina
  • OSD
  • Series Extent
  • User Site ID: S2016CA021001
  • User Pedon ID: S2016CA021001
  • Vegetation Plot ID: S2016CA021001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 17N0582
  • User Project ID: 53036
  • Project Name: MLRA 17 - Bay-Delta Soil Systems Study
  • Print Date: 2/17/2026
  • 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: 39.7800278
  • Std. Longitude: -122.2603889
  • Datum: WGS84
  • Map Unit: Czk—Cortina gravelly fine sandy loam, shallow
  • State: California
  • County: CA021—Glenn
  • MLRA: 17—Sacramento and San Joaquin Valleys
  • Regional Office: SW—Southwest
  • MLRA Soil Survey Area: SW-CHI—Chico, California
  • Non-MLRA Soil Survey Area: CA021—Glenn County, California
  • PEDON

  • Describers Name: Andrew Conlin
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, nonacid, thermic Typic Xerorthents
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


  • SITE

  • Parent Material: overbank alluvium derived from metamorphic and sedimentary rock over channel alluvium derived from metamorphic and sedimentary rock
  • Landscape: valley
  • Landform: flood-plain step on alluvial fan
  • Microfeature: bar
  • Geomorphic Component Terraces: tread
  • Drainage Class: well
  • Flooding: rare flooding for brief periods begining in dec
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no
  • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/24/2016 (actual site observation date)
  • Data Collector: Ryan Miebach, Andrew Conlin
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • 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

    BRODI

    DACTY

    ERODI

    FESTU

    LUPIN

    PLANT

    TRIFO

    Brodiaea

    Dactylis

    Erodium

    Festuca

    Lupinus

    Plantago

    Trifolium

    brodiaea

    orchardgrass

    stork's bill

    fescue

    lupine

    plantain

    clover

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

    ochric epipedon

    0—15

    —15—

    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

    0.5

    91

    124

    558

    16.6

    Ap1—0 to 5 centimeters (0.0 to 2.0 inches); very dark grayish brown (2.5Y 3/2), light brownish gray (2.5Y 6/2), dry; fine sandy loam; 5 percent clay; moderate medium granular structure; soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine irregular and many very fine tubular pores; 5 percent by volume nonflat subangular indurated 2-5-15 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; slightly acid, pH 6.5, hellige-truog; abrupt smooth boundary. Lab sample # 17N02998; slightly moist when described; observed in trench
    Ap2—5 to 15 centimeters (2.0 to 5.9 inches); dark grayish brown (2.5Y 4/2), light brownish gray (2.5Y 6/2), dry; fine sandy loam; 6 percent clay; moderate very thick platy parts to weak coarse subangular blocky structure; slightly hard, very friable, nonsticky, nonplastic; common very fine roots; common very fine tubular pores; 5 percent by volume nonflat subangular indurated 2-5-15 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 6.6, hellige-truog; clear smooth boundary. Lab sample # 17N02999; slightly moist when described; observed in trench
    AC—15 to 26 centimeters (5.9 to 10.2 inches); dark grayish brown (2.5Y 4/2), light brownish gray (2.5Y 6/2), dry; fine sandy loam; 7 percent clay; weak medium subangular blocky parts to structureless single grain; slightly hard, very friable, nonsticky, nonplastic; common very fine roots; common very fine tubular pores; 10 percent by volume nonflat subangular indurated 2-5-15 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # 17N03000; slightly moist when described; observed in trench
    C1—26 to 51 centimeters (10.2 to 20.1 inches); dark grayish brown (2.5Y 4/2), light brownish gray (2.5Y 6/2), dry; sandy loam; 6 percent clay; structureless single grain; loose, loose, nonsticky, nonplastic; few very fine roots; common very fine tubular pores; 10 percent by volume nonflat subangular indurated 2-5-20 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 6.8, hellige-truog; abrupt wavy boundary. Lab sample # 17N03001; slightly moist when described; observed in trench
    C2—51 to 112 centimeters (20.1 to 44.1 inches); dark grayish brown (2.5Y 4/2), light brownish gray (2.5Y 6/2), dry; extremely gravelly loamy sand; 2 percent clay; structureless single grain; loose, loose, nonsticky, nonplastic; few very fine roots; many very fine interstitial and many medium interstitial and many fine interstitial pores; 70 percent by volume nonflat subrounded indurated 2-10-50 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.6, hellige-truog; abrupt smooth boundary. Lab sample # 17N03002; slightly moist when described; observed in trench
    C3—112 to 122 centimeters (44.1 to 48.0 inches); dark grayish brown (2.5Y 4/2), light brownish gray (2.5Y 6/2), dry; fine sandy loam; 7 percent clay; structureless massive; loose, loose, nonsticky, nonplastic; few very fine roots; common very fine tubular pores; 10 percent medium distinct irregular noncoherent cemented masses of oxidized iron with diffuse boundaries; 2 percent by volume nonflat subangular indurated 2-5-15 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 17N03003; moist when described; observed in trench
    C4—122 to 147 centimeters (48.0 to 57.9 inches); dark gray (2.5Y 4/1), gray (2.5Y 6/1), dry; very gravelly loamy coarse sand; 1 percent clay; structureless single grain; loose, loose, nonsticky, nonplastic; 0.0 roots; many very fine interstitial and common fine interstitial pores; 45 percent by volume nonflat subrounded indurated 2-5-60 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; neutral, pH 7.2, hellige-truog; clear smooth boundary. Lab sample # 17N03004; moist when described; observed in trench
    C5—147 to 180 centimeters (57.9 to 70.9 inches); dark gray (2.5Y 4/1), light gray (2.5Y 7/1), dry; extremely gravelly coarse sand; structureless single grain; loose, loose, nonsticky, nonplastic; 0.0 roots; many very fine interstitial and many medium interstitial and many fine interstitial pores; 10 percent by volume nonflat subrounded indurated 75-100-250 millimeter metamorphic, unspecified fragments observed by visual inspection method and 65 percent by volume nonflat subrounded indurated 2-5-70 millimeter metamorphic, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.5, hellige-truog. Lab sample # 17N03005; moist when described; observed in trench