IDENTIFIERS

  • Current Taxon Name (Soil Name): Cosumnes
  • OSD
  • Series Extent
  • User Site ID: S2015CA067003
  • User Pedon ID: S2015CA067003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 16N0685
  • NCSS Pedon Lab Data NASIS Record ID - 85168
  • User Project ID: 2016-HAN-MLRA16 and MLRA 17-001
  • Project Name: MLRA 16 and MLRA 17 - Bay Delta Pedon Characterizations for CEAP
  • Print Date: 9/24/2024

    • 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: 38.1724130
  • Std. Longitude: -121.2307400
  • Datum: WGS84
  • Location Description: Floodplain of the Cosumnes River.
  • Map Unit: 129—Cosumnes silt loam, drained, 0 to 2 percent slopes, occasionally flooded
  • State: California
  • County: CA067—Sacramento
  • MLRA: 17—Sacramento and San Joaquin Valleys
  • Regional Office: SW—Southwest
  • MLRA Soil Survey Area: SW-HAN—Hanford, California
  • Non-MLRA Soil Survey Area: CA067—Sacramento County, California
  • 7.5 Minute USGS Quad: 38121-C4—Bruceville, California

    • PEDON

  • Describers Name: Phil Smith, Genevieve Landucci
  • Current Taxonomic Class: Fine, mixed, active, nonacid, thermic Aquic Xerofluvents
  • Current Taxon Kind: series
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Sampled As Information:
  • Soil Name - Cosumnes
  • Taxonomic Class - Fine, mixed, active, nonacid, thermic Aquic Xerofluvents
  • Taxon Kind - series
  • Classificaton Date - 3/4/2016
  • Classifier - Phil Smith
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium derived from igneous and metamorphic rock
  • Landform: flood plain on valley floor
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: somewhat poorly
  • Flooding: occasional flooding
  • Ponding: none ponding begining in jan
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/17/2015 (actual site observation date)
  • Data Collector: Phil Smith, Geneveive Landucci
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - sunny
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    anthric saturation

    umbric epipedon

    aquic conditions

    lithologic discontinuity

    slickensides

    —

    0—19

    19—200

    72—72

    112—200

    —-

    —19—

    —181—

    —0—

    —88—
    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

    0.1

    —

    —

    5.3

    —

    0

    540

    —

    285

    15.5

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 19 centimeters (0.0 to 7.5 inches); dark brown (10YR 3/3), brown (10YR 5/3), dry; loam; 27 percent clay; mottles; cloddy structure; moderately hard, friable, moderately sticky, moderately plastic; very few (0.2) very fine roots throughout and very few (0.2) fine roots throughout; 5 percent fine mica flakes, muscovite; fragments; noneffervescent; abrupt smooth boundary. Lab sample # 16N03034; observed in pit, small
    C1—19 to 51 centimeters (7.5 to 20.1 inches); 63 percent dark grayish brown (10YR 4/2) and 30 percent dark yellowish brown (10YR 3/4), 63 percent light brownish gray (10YR 6/2) and 30 percent yellowish brown (10YR 5/4), dry; clay loam; 29 percent clay; structureless massive parts to weak very coarse subangular blocky; very hard, firm, moderately sticky, moderately plastic; very few (0.1) very fine roots throughout and very few (0.1) fine roots throughout; 2 percent fine noncoherent cemented and grayish brown (10YR 5/2), moist, iron depletions in matrix and 5 percent fine prominent noncoherent cemented dark brown (7.5YR 3/4), moist, masses of oxidized iron in matrix; 5 percent fine mica flakes, muscovite; fragments; noneffervescent; abrupt smooth boundary. Lab sample # 16N03035; observed in pit, small
    C2—51 to 72 centimeters (20.1 to 28.3 inches); 85 percent brown (7.5YR 4/4) and 15 percent yellowish brown (10YR 5/8), 85 percent brown (7.5YR 5/3) and 15 percent brownish yellow (10YR 6/8), dry; silty clay loam; 35 percent clay; structureless massive parts to moderate very coarse angular blocky; very hard, firm, moderately sticky, moderately plastic; very few (0.1) fine roots between peds; 20 percent pressure faces; 10 percent medium irregular noncoherent cemented grayish brown (2.5Y 5/2), moist, iron depletions in matrix; 3 percent fine very dark brown (10YR 2/2), moist, root sheaths; fragments; noneffervescent; clear wavy boundary. Lab sample # 16N03036; observed in pit, small
    Ayb1—72 to 78 centimeters (28.3 to 30.7 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silty clay loam; 35 percent clay; structureless massive; very hard, firm, moderately sticky, moderately plastic; very few (0.1) very fine roots throughout; common (5.0) very fine dendritic tubular pores; 5 percent fine irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix and 20 percent medium irregular noncoherent cemented strong brown (7.5YR 4/6), moist, masses of oxidized iron with clear boundaries; 8 percent fine distinct irregular noncoherent cemented brownish yellow (10YR 6/6), moist, gypsum crystals, unspecified with sharp boundaries in matrix; fragments; noneffervescent; clear wavy boundary. Lab sample # 16N03037; observed in pit, small
    Ayb2—78 to 93 centimeters (30.7 to 36.6 inches); 70 percent very dark grayish brown (10YR 3/2) and 30 percent grayish brown (10YR 5/2), 70 percent gray (10YR 5/1) and 30 percent light brownish gray (10YR 6/2), dry; silt loam, silty clay loam; 27 percent clay; weak very coarse prismatic structure; very hard, firm, moderately sticky, moderately plastic; very few (0.1) very fine roots between peds; common (4.0) very fine dendritic tubular and common (1.0) fine dendritic tubular pores; 5 percent medium distinct noncoherent cemented dark brown (7.5YR 3/4), moist, masses of oxidized iron with clear boundaries and 5 percent medium distinct irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix; 20 percent coarse irregular noncoherent cemented very dark gray (10YR 3/1), moist, gypsum crystals, unspecified in matrix and 3 percent fine brown (7.5YR 4/4), moist, with sharp boundaries on surfaces along root channels; fragments; noneffervescent; clear smooth boundary. Lab sample # 16N03038; observed in pit, small
    Bg—93 to 112 centimeters (36.6 to 44.1 inches); 85 percent 10YR 2.5/1 (10YR 2.5/1) and 15 percent very dark gray (5Y 3/1), dark grayish brown (10YR 4/2), dry; silty clay; 42 percent clay; moderate very coarse prismatic parts to moderate coarse prismatic parts to weak very coarse angular blocky structure; extremely hard, very firm, very sticky, very plastic; very few (0.1) very fine roots between peds; common (4.0) very fine dendritic tubular pores; 15 percent fine prominent irregular noncoherent cemented dark reddish brown (5YR 3/3), moist, masses of oxidized iron with sharp boundaries in matrix and 15 percent fine prominent irregular noncoherent cemented dark reddish brown (5YR 3/3), moist, masses of oxidized iron on surfaces along root channels; fragments; noneffervescent; clear smooth boundary. Lab sample # 16N03039; observed in pit, small
    Bssg—112 to 200 centimeters (44.1 to 78.7 inches); 60 percent black (2.5Y 2.5/1) and 40 percent very dark gray (10YR 3/1), dark grayish brown (10YR 4/2), dry; silty clay; 60 percent clay; moderate very coarse prismatic parts to moderate coarse prismatic parts to weak very coarse angular blocky structure; extremely hard, very firm, very sticky, very plastic; very few (0.1) very fine roots between peds; common (2.0) very fine dendritic tubular pores; 3 percent slickensides (pedogenic); 1 percent fine distinct irregular noncoherent cemented brownish yellow (10YR 6/6), moist, gypsum crystals, unspecified with sharp boundaries in matrix; fragments; noneffervescent. Lab sample # 16N03041, 16N03040; observed in pit, small