IDENTIFIERS

  • Current Taxon Name (Soil Name): LOFGREN
  • OSD
  • Series Extent
  • User Site ID: 95CA612001
  • User Pedon ID: 95CA612001
  • Vegetation Plot ID: 95CA612001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 95P0510
  • NCSS Pedon Lab Data NASIS Record ID - 67528
  • Print Date: 2/16/2025

    • 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: 39.4670985
  • Std. Longitude: -121.8188370
  • Datum: WGS84
  • Township: 19 N
  • Range: 1 E
  • Section: 25
  • PLSS Details: approximately 200 feet east and 1100 feet north of the southeast corner
  • Location Description: 7 miles W of intersection of Highways 99 and 162. 175' E of farm road
  • Map Unit: 500—Lofgren-Blavo , 0 to 1 percent slopes
  • State: California
  • County: CA007—Butte
  • MLRA: 17—Sacramento and San Joaquin Valleys
  • Non-MLRA Soil Survey Area: CA612—Butte Area, California, Parts of Butte and Plumas Counties
  • 7.5 Minute USGS Quad: 39121-D7—West of Biggs, California

    • PEDON

  • Describers Name: DWB, AEC, BG
  • Current Taxonomic Class: Very-fine, smectitic, thermic Xeric Epiaquerts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - LOFGREN
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/24/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - aquic
  • Moisture Subclass - xeric
  • Sampled As Information:
  • Soil Name - Lofgren
  • Classificaton Date - 5/2/1995
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: basin
  • Anthropogenic Feature: leveled land
  • Runoff: negligible
  • Drainage Class: poorly
  • Flooding: rare flooding for brief periods begining in jan
  • Ponding: frequent ponding for long periods begining in jan
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/2/1995 (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
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ORSA

    Oryza sativa

    rice

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

    aquic conditions

    slickensides

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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

    —

    —

    25

    —

    225

    508

    —

    —

    16.1

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    Ap—0 to 13 centimeters (0.0 to 5.1 inches); very dark gray (10YR 3/1), dark gray (10YR 4/1), dry; silty clay; weak medium subangular blocky parts to strong fine granular structure; very hard, slightly sticky, very plastic; 21.0 fine roots; 3.0 fine interstitial pores; 35 percent fine threadlike brown (7.5YR 4/4) masses of oxidized iron; fragments; negative to alpha-alpha dipyridyl; noneffervescent; slightly acid, pH 6.4, hellige-truog; abrupt smooth boundary. Lab sample # 95P3862
    Bssg1—13 to 30 centimeters (5.1 to 11.8 inches); 50 percent very dark gray (10YR 3/1) and 50 percent dark gray (N 4/0), dark gray (10YR 4/1), dry; clay; weak medium angular blocky structure; extremely hard, slightly sticky, very plastic; 0.5 very fine and fine roots; 0.5 very fine tubular pores; slickensides (pedogenic); 20 percent fine threadlike dark brown (7.5YR 3/3) masses of oxidized iron; 2 percent fine threadlike gray (10YR 5/1); fragments; negative to alpha-alpha dipyridyl; noneffervescent; slightly alkaline, pH 7.8, hellige-truog; clear smooth boundary. Lab sample # 95P3863. continuous - phpvsfiid 107494; continuous - phpvsfiid 107494
    Bssg2—30 to 74 centimeters (11.8 to 29.1 inches); dark gray (10YR 4/1), dark gray (10YR 4/1), dry; clay; moderate coarse prismatic structure; extremely hard, extremely firm*, slightly sticky, very plastic; 0.5 very fine roots; 0.5 very fine tubular pores; slickensides (pedogenic); 15 percent fine threadlike gray (10YR 5/1); fragments; negative to alpha-alpha dipyridyl; noneffervescent; slightly alkaline, pH 7.8, hellige-truog; clear smooth boundary. Lab sample # 95P3864. continuous - phpvsfiid 107453; continuous - phpvsfiid 107453
    Bkssg—74 to 97 centimeters (29.1 to 38.2 inches); dark gray (10YR 4/1), grayish brown (10YR 5/2), dry; silty clay; moderate fine angular blocky structure; extremely hard, firm, slightly sticky, very plastic; 3.0 very fine tubular pores; faint slickensides (pedogenic); 2 percent fine threadlike carbonate threads and 15 percent fine threadlike gray (10YR 5/1); fragments; negative to alpha-alpha dipyridyl; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary. Lab sample # 95P3865
    Bkg—97 to 112 centimeters (38.2 to 44.1 inches); dark gray (10YR 4/1), very pale brown (10YR 8/2), dry; silty clay loam; moderate fine prismatic parts to weak fine angular blocky structure; extremely hard, firm, slightly sticky, very plastic; 3.0 very fine tubular pores; 10 percent fine threadlike carbonate threads and 20 percent fine threadlike gray (10YR 5/1); fragments; negative to alpha-alpha dipyridyl; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; abrupt wavy boundary. Lab sample # 95P3866
    2Bkg—112 to 119 centimeters (44.1 to 46.9 inches); dark grayish brown (10YR 4/2), light gray (10YR 7/2), dry; sandy loam; moderate medium angular blocky structure; very rigid, firm, moderately cemented; 0.5 very fine and fine tubular pores; 10 percent fine threadlike carbonate threads; fragments; negative to alpha-alpha dipyridyl; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary. Lab sample # 95P3867
    2Bkgm1—119 to 157 centimeters (46.9 to 61.8 inches); brown (7.5YR 4/4), light gray (10YR 7/2), dry; massive; very rigid, very rigid; 0.5 very fine and fine tubular pores; 15 percent fine threadlike carbonate threads; fragments; negative to alpha-alpha dipyridyl; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary. Lab sample # 95P3868
    2Bkgm2—157 to 208 centimeters (61.8 to 81.9 inches); brown (7.5YR 4/4), pink (7.5YR 7/4), dry; massive; very rigid, very rigid; fragments; negative to alpha-alpha dipyridyl; strong effervescence; moderately alkaline, pH 8.0, hellige-truog. Lab sample # 95P3869