IDENTIFIERS

  • Current Taxon Name (Soil Name): Willows
  • OSD
  • Series Extent
  • User Site ID: 93CA011008
  • User Pedon ID: 93CA011008
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 94P0059
  • 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: 39.2097222
  • Std. Longitude: -122.0647222
  • Datum: WGS84
  • Location Description: 3 mile west of Colusa, CA. 2200 feet north and 2250 feet west of the southeast corner, Section 27, T.16N., R.2W.
  • Map Unit: 104—Willows silty clay, 0 to 1 percent slopes, frequently flooded
  • State: California
  • County: CA011—Colusa
  • MLRA: 17—Sacramento and San Joaquin Valleys
  • Non-MLRA Soil Survey Area: CA011—Colusa County, California
  • 7.5 Minute USGS Quad: 39122-B1—Colusa, California

    • PEDON

  • Describers Name: Maxine Levin and Conrad Neitsch
  • Current Taxonomic Class: Fine, smectitic, thermic Aquic Haploxererts
  • Current Taxon Kind: series
  • Pedon Type: within range of map unit
  • Pedon Purpose: research site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Willows
  • PSC - 25 to 100 cm.
  • Classificaton Date - 11/9/2005
  • Soil Taxonomic Edition - seventh edition
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Wekoda Low
  • Classificaton Date - 9/24/1993
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: basin
  • Landform: flood plain
  • Anthropogenic Feature: leveled land
  • Flooding: frequent flooding
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/24/1993 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • 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

    1

    —

    —

    47

    —

    180

    170

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    Colusa

    —
    Ap1—0 to 12 centimeters (0.0 to 4.7 inches); dark grayish brown (2.5Y 4/2) exterior, very dark grayish brown (2.5Y 3/2) exterior, moist; silty clay loam; 39 percent clay; 5 percent yellowish brown (10YR 5/4) fine distinct cylindrical mottles; weak medium subangular blocky parts to moderate medium and coarse granular structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 10.0 very fine roots throughout; 20.0 very fine and fine low-continuity interstitial and tubular pores; fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # 94P0509; observed in trench. Polygon #23.
    Ap2—12 to 34 centimeters (4.7 to 13.4 inches); dark grayish brown (2.5Y 4/2) exterior, very dark grayish brown (2.5Y 3/2) exterior, moist; clay; 44 percent clay; 5 percent yellowish brown (10YR 5/4) fine distinct irregular mottles; weak coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 5.0 very fine roots throughout; 20.0 very fine low-continuity tubular pores; 5 percent prominent pressure faces on faces of peds; fragments; noneffervescent, by hcl, 1n; gradual smooth boundary. Lab sample # 94P0510; observed in trench. Polygon #24.; discontinuous - phpvsfiid 207480; discontinuous - phpvsfiid 207480
    Bw—34 to 50 centimeters (13.4 to 19.7 inches); grayish brown (2.5Y 5/2) exterior, very dark grayish brown (2.5Y 3/2) exterior, moist; clay; 45 percent clay; 1 percent yellowish brown (10YR 5/4) fine distinct irregular mottles; moderate coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 20.0 very fine low-continuity tubular pores; 5 percent prominent pressure faces on faces of peds; 2 percent fine irregular extremely weakly coherent cemented very dark gray (10YR 3/1) iron-manganese concretions throughout; fragments; slight effervescence, by hcl, 1n; gradual smooth boundary. Lab sample # 94P0511; observed in trench. Polygon #25.; discontinuous - phpvsfiid 207481; discontinuous - phpvsfiid 207481
    Bssy1—50 to 100 centimeters (19.7 to 39.4 inches); brown (10YR 5/3) exterior, brown (10YR 4/3) exterior, moist; clay; 44 percent clay; strong coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 20.0 very fine low-continuity tubular pores; 5 percent prominent organic stains in root channels and/or pores and 10 percent prominent pressure faces on faces of peds and 50 percent prominent slickensides (pedogenic) on faces of peds; 2 percent fine spherical extremely weakly coherent cemented very dark gray (10YR 3/1) iron-manganese concretions throughout; 2 percent fine irregular noncoherent cemented white (10YR 8/1) lime masses throughout and 5 percent fine threadlike noncoherent cemented white (10YR 8/1) gypsum crystal clusters throughout; fragments; strong effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 94P0512; observed in trench. Polygon #26.; patchy - phpvsfiid 207483; discontinuous - phpvsfiid 207482; continuous - phpvsfiid 207484; patchy - phpvsfiid 207483; discontinuous - phpvsfiid 207482; continuous - phpvsfiid 207484
    Bssy2—100 to 138 centimeters (39.4 to 54.3 inches); brown (10YR 5/3) exterior, brown (10YR 4/3) exterior, moist; clay; 44 percent clay; strong coarse angular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 10.0 very fine low-continuity tubular pores; 5 percent prominent organic stains in root channels and/or pores and 50 percent prominent slickensides (pedogenic) on faces of peds; 2 percent fine spherical extremely weakly coherent cemented very dark gray (10YR 3/1) iron-manganese concretions throughout; 2 percent fine irregular noncoherent cemented white (10YR 8/1) lime masses throughout and 5 percent fine threadlike noncoherent cemented white (10YR 8/1) gypsum crystal clusters throughout; fragments; strong effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 94P0513; observed in trench. Polygon #27.; continuous - phpvsfiid 207485; patchy - phpvsfiid 207486; continuous - phpvsfiid 207485; patchy - phpvsfiid 207486
    Bssy3—138 to 150 centimeters (54.3 to 59.1 inches); brown (10YR 5/3) exterior, brown (10YR 4/3) exterior, moist; clay; 44 percent clay; 1 percent light brownish gray (10YR 6/2) medium distinct irregular mottles; moderate coarse angular blocky parts to moderate medium subangular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 10.0 very fine low-continuity tubular pores; 50 percent prominent slickensides (pedogenic) on faces of peds; 2 percent fine spherical iron-manganese concretions throughout; 2 percent coarse and very coarse irregular noncoherent cemented lime masses throughout and 2 percent fine irregular noncoherent cemented white (10YR 8/1) lime masses throughout and 5 percent fine threadlike noncoherent cemented white (10YR 8/1) gypsum crystal clusters throughout; fragments; strong effervescence, by hcl, 1n; gradual smooth boundary. Lab sample # 94P0514; observed in trench. Polygon #28.; continuous - phpvsfiid 207487; continuous - phpvsfiid 207487
    Bssy4—150 to 182 centimeters (59.1 to 71.7 inches); brown (10YR 5/3) exterior, brown (10YR 4/3) exterior, moist; clay; 44 percent clay; 3 percent gray (10YR 5/1) medium distinct irregular mottles; moderate coarse angular blocky parts to moderate medium subangular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 10.0 very fine low-continuity tubular pores; 50 percent prominent slickensides (pedogenic) on faces of peds; 2 percent fine spherical extremely weakly coherent cemented iron-manganese concretions throughout; 2 percent fine irregular noncoherent cemented white (10YR 8/1) lime masses throughout and 5 percent fine threadlike noncoherent cemented white (10YR 8/1) gypsum crystal clusters throughout; fragments; strong effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 94P0515; observed in trench. Polygon #29.; continuous - phpvsfiid 207488; continuous - phpvsfiid 207488
    Bssy5—182 to 202 centimeters (71.7 to 79.5 inches); yellowish brown (10YR 5/4) exterior, dark yellowish brown (10YR 4/4) exterior, moist; clay; 41 percent clay; 2 percent gray (10YR 5/1) medium irregular mottles; moderate coarse subangular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 10.0 very fine low-continuity tubular pores; 50 percent prominent slickensides (pedogenic) on faces of peds; 2 percent fine spherical extremely weakly coherent cemented very dark gray (10YR 3/1) iron-manganese concretions throughout; 2 percent fine irregular noncoherent cemented white (10YR 8/1) lime masses throughout and 5 percent fine threadlike noncoherent cemented white (10YR 8/1) gypsum crystal clusters throughout; fragments; strong effervescence, by hcl, 1n; clear smooth boundary. Lab sample # 94P0516; observed in trench. Polygon #30.; continuous - phpvsfiid 207489; continuous - phpvsfiid 207489
    Bkssy—202 to 220 centimeters (79.5 to 86.6 inches);, dark yellowish brown (10YR 4/4) exterior, moist; silty clay; 50 percent clay; 1 percent greenish gray (5GY 5/1) fine irregular mottles; moderate coarse subangular blocky structure; very hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine tubular pores; 50 percent prominent slickensides (pedogenic) on faces of peds; 2 percent fine spherical very dark gray (10YR 3/1) iron-manganese concretions throughout; 5 percent fine irregular white (10YR 8/1) lime masses throughout and 5 percent fine threadlike white (10YR 8/1) gypsum crystal clusters throughout; fragments; violent effervescence, by hcl, 1n. Lab sample # 94P0517; observed in trench. Polygon #31.; continuous - phpvsfiid 207490; continuous - phpvsfiid 207490