IDENTIFIERS

  • Current Taxon Name (Soil Name): Willows (by polygons)
  • OSD
  • Series Extent
  • User Site ID: 93CA011006A
  • User Pedon ID: 93CA011006A
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 94P0061
  • Print Date: 11/24/2024

    • 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 miles 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: Susan Southard and Randy Southard
  • 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 (by polygons)
  • 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 (by polygons)
  • 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:
  • 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 11 centimeters (0.0 to 4.3 inches); grayish brown (2.5Y 5/2), very dark grayish brown (2.5Y 3/2), moist; silty clay loam; 35 percent clay; brown (7.5YR 5/4) and 2 percent strong brown (7.5YR 5/8) fine distinct irregular mottles; strong medium and coarse granular, and strong medium angular blocky structure; very hard, friable, very sticky, moderately plastic; 5.0 very fine roots throughout; 5.0 very fine and fine tubular and 0.5 medium tubular pores; fragments. Lab sample # 94P0530; observed in trench. Polygon #40.
    Ap2—11 to 25 centimeters (4.3 to 9.8 inches); grayish brown (2.5Y 5/2), very dark grayish brown (2.5Y 3/2), moist; silty clay; 48 percent clay; brown (7.5YR 4/4) and 5 percent strong brown (7.5YR 5/8) fine distinct mottles; strong coarse prismatic parts to moderate coarse angular blocky structure; very hard, firm, moderately sticky, very plastic; 0.5 very fine and fine roots throughout; 0.5 very fine and fine tubular pores; fragments. Lab sample # 94P0531; observed in trench. Polygon #41.
    Bw—25 to 53 centimeters (9.8 to 20.9 inches); grayish brown (2.5Y 5/2), very dark grayish brown (2.5Y 3/2), moist; silty clay; 50 percent clay; brown (7.5YR 4/4) and 2 percent strong brown (7.5YR 5/8) fine distinct mottles; strong coarse prismatic parts to moderate coarse angular blocky structure; very hard, firm, moderately sticky, very plastic; 5.0 very fine roots throughout; 5.0 very fine tubular pores; 10 percent pressure faces on faces of peds; 1 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; fragments; slight effervescence. Lab sample # 94P0532; observed in trench. Polygon #42.; patchy - phpvsfiid 207442; patchy - phpvsfiid 207442
    Bw—35 to 57 centimeters (13.8 to 22.4 inches); dark grayish brown (2.5Y 4/2), very dark grayish brown (2.5Y 3/2), moist; silty clay; 48 percent clay; strong coarse prismatic parts to strong medium angular blocky structure; very hard, firm, moderately sticky, very plastic; 10.0 very fine roots throughout; 10.0 very fine and fine tubular pores; 10 percent dark grayish brown (2.5Y 4/2), moist, pressure faces on faces of peds; 1 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 5 percent fine irregular noncoherent cemented light brownish gray (10YR 6/2) gypsum masses throughout; fragments. Lab sample # 94P0526; observed in trench. Polygon #3.; patchy - phpvsfiid 207433; patchy - phpvsfiid 207433
    Bss—53 to 84 centimeters (20.9 to 33.1 inches); brown (10YR 5/3), dark grayish brown (2.5Y 4/2), moist; silty clay; 46 percent clay; weak coarse prismatic parts to strong medium and coarse angular blocky structure; very hard, firm, moderately sticky, very plastic; 0.5 very fine roots throughout; 5.0 very fine tubular pores; 25 percent slickensides (pedogenic) and 25 percent pressure faces; 2 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 5 percent medium irregular gypsum masses throughout and 5 percent medium irregular gypsum threads throughout; fragments; slight effervescence. Lab sample # 94P0533; observed in trench. Polygon #43.; continuous - phpvsfiid 207443; continuous - phpvsfiid 207444; continuous - phpvsfiid 207443; continuous - phpvsfiid 207444
    Bssy1—54 to 79 centimeters (21.3 to 31.1 inches); light olive brown (2.5Y 5/3), olive brown (2.5Y 4/4), moist; silty clay; 48 percent clay; weak coarse prismatic parts to strong fine and medium angular blocky structure; very hard, firm, moderately sticky, very plastic; 0.5 very fine roots throughout; 5.0 very fine and fine tubular pores; 2 percent distinct dark gray (N 4/0), moist, coats in root channels and/or pores and 25 percent slickensides (pedogenic) and 50 percent dark grayish brown (2.5Y 4/2), moist, pressure faces on faces of peds; 1 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 10 percent fine irregular noncoherent cemented light gray (10YR 7/2) gypsum threads throughout and 10 percent fine and medium irregular noncoherent cemented very pale brown (10YR 7/3) gypsum masses throughout and 5 percent medium irregular gypsum crystal clusters throughout; fragments. Lab sample # 94P0527; observed in trench. Polygon #4.; continuous - phpvsfiid 207434; continuous - phpvsfiid 207435; continuous - phpvsfiid 207436; continuous - phpvsfiid 207434; continuous - phpvsfiid 207435; continuous - phpvsfiid 207436
    Bssy2—76 to 107 centimeters (29.9 to 42.1 inches);, olive brown (2.5Y 4/4), moist; silty clay; 50 percent clay; strong coarse angular blocky structure; very hard, firm, moderately sticky, very plastic; 0.5 very fine roots throughout; 0.5 fine tubular pores; 2 percent distinct gray (N 5/0), moist, coats in root channels and/or pores and 25 percent pressure faces on faces of peds and 50 percent slickensides (pedogenic); 1 percent fine irregular extremely weakly coherent cemented black (N 2/0) iron-manganese masses throughout and 2 percent fine spherical iron-manganese concretions throughout; 15 percent fine and medium irregular noncoherent cemented white (10YR 8/1) gypsum threads throughout and 5 percent fine and medium irregular noncoherent cemented pale brown (10YR 6/3) gypsum masses throughout; fragments. Lab sample # 94P0528; observed in trench. Polygon #5.; continuous - phpvsfiid 207437; continuous - phpvsfiid 207438; continuous - phpvsfiid 207439; continuous - phpvsfiid 207437; continuous - phpvsfiid 207438; continuous - phpvsfiid 207439
    Bssy3—106 to 170 centimeters (41.7 to 66.9 inches);, dark grayish brown (2.5Y 4/2), moist; silty clay loam; 39 percent clay; 2 percent light olive brown (2.5Y 5/6) medium prominent irregular and 10 percent olive brown (2.5Y 4/4) medium prominent irregular mottles; weak coarse subangular blocky structure; very hard, friable, very sticky, moderately plastic; 0.5 very fine roots throughout; 0.5 very fine and fine tubular pores; 10 percent slickensides (pedogenic) and 50 percent pressure faces on faces of peds; 2 percent fine spherical extremely weakly coherent cemented black (10YR 2/1) iron-manganese concretions throughout; 10 percent medium irregular noncoherent cemented pale brown (10YR 6/3) gypsum crystal clusters throughout and 10 percent medium irregular noncoherent cemented light gray (10YR 7/2) gypsum masses throughout and 2 percent medium irregular carbonate masses throughout; fragments; slight effervescence. Lab sample # 94P0529; observed in trench. Polygon #6.; discontinuous - phpvsfiid 207441; patchy - phpvsfiid 207440; discontinuous - phpvsfiid 207441; patchy - phpvsfiid 207440