IDENTIFIERS

  • Current Taxon Name (Soil Name): HILT
  • OSD
  • Series Extent
  • User Site ID: S1966CA093006
  • User Pedon ID: S1966CA093006
  • Vegetation Plot ID: S1966CA093006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A2873
  • NCSS Pedon Lab Data NASIS Record ID - 37452
  • Print Date: 3/2/2025

    • 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: 41.9738884
  • Std. Longitude: -122.6061096
  • Datum: WGS84
  • Township: 48N
  • Range: 7W
  • Section: 25
  • PLSS Details: Site is located 400 feet west of Interstate Highway No. 5 where the Southern Pacific Railroad and highway intersect, or 2000 feet east and 200 feet north of the SW corner
  • Location Description: A pit located on the Cedar Grove Ranch, about 3 miles north of the California Quarantine Station on Interstate Highway No 5.
  • State: California
  • County: CA093—Siskiyou
  • MLRA: 5—Siskiyou-Trinity Area
  • Non-MLRA Soil Survey Area: CA602—Siskiyou County, California, Central Part

    • PEDON

  • Describers Name: J. J. Newlun.
  • Current Taxonomic Class: Fine-loamy, mixed, mesic Mollic Haploxeralfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - HILT
  • PSC - 41 to 100 cm.
  • Classificaton Date - 1/27/2010
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Hilt
  • Classificaton Date - 5/24/1966
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Slope Position: middle third
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/24/1966 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - other tree cover
  • 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

    ANGE

    ARCTO3

    JUNIP

    QUAL

    Andropogon gerardii

    Arctostaphylos

    Juniperus

    Quercus alba

    big bluestem

    manzanita

    juniper

    white oak

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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

    17

    —

    —

    878

    —

    135

    406

    —

    —

    10.6

    22.2

    0

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    —

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    A11—0 to 5 centimeters (0.0 to 2.0 inches); brown (10YR 5/3), dark brown (10YR 3/3), moist; clay loam; moderate coarse platy structure; slightly hard, friable, slightly sticky, slightly plastic; 3.0 very fine and fine roots; 3.0 medium tubular and 0.5 fine tubular pores; fragments; slightly acid, pH 6.5, hellige-truog; abrupt smooth boundary. Lab sample # 40A22655
    A—0 to 23 centimeters (0.0 to 9.1 inches); fragments. Lab sample # 40A22662
    A3—5 to 23 centimeters (2.0 to 9.1 inches); brown (7.5YR 5/4), dark brown (7.5YR 3/2), moist; clay loam; massive parts to weak medium subangular blocky; hard when dry, friable, moderately sticky, moderately plastic; 3.0 very fine and fine roots; 0.5 medium tubular and 21.0 fine tubular pores; 10 percent clay films in root channels and/or pores; fragments; slightly acid, pH 6.2, hellige-truog; abrupt smooth boundary. Lab sample # 40A22656
    B1—23 to 41 centimeters (9.1 to 16.1 inches); brown (7.5YR 5/4), dark brown (7.5YR 3/4), moist; clay loam; moderate medium subangular blocky structure; hard when dry, friable, moderately sticky, moderately plastic; 21.0 medium roots and 3.0 fine roots; 3.0 medium tubular and 21.0 fine tubular pores; 10 percent clay films in root channels and/or pores and 75 percent clay films on faces of peds and in pores; fragments. Lab sample # 40A22657
    B21t—41 to 58 centimeters (16.1 to 22.8 inches); brown (7.5YR 5/4), dark reddish brown (5YR 3/3) rubbed and reddish brown (5YR 4/4), moist; silty clay loam; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, friable, moderately sticky, moderately plastic; 21.0 medium and coarse roots; 3.0 medium tubular and 21.0 fine tubular pores; clay films on faces of peds and in pores and 10 percent clay films in root channels and/or pores; fragments; moderately acid, pH 5.8, hellige-truog; clear wavy boundary. Lab sample # 40A22658. continuous - phpvsfiid 188614; continuous - phpvsfiid 188614
    B22t—58 to 94 centimeters (22.8 to 37.0 inches); strong brown (7.5YR 5/6), brown (7.5YR 4/4), moist; silty clay loam; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, friable, very sticky, very plastic; 21.0 medium and coarse roots and 0.5 fine roots; 3.0 fine tubular pores; 75 percent clay films on faces of peds and in pores; fragments; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # 40A22659
    B23t—94 to 132 centimeters (37.0 to 52.0 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; silty clay loam; moderate medium subangular blocky structure; very hard, firm, very sticky, very plastic; 21.0 medium and coarse roots and 0.5 fine roots; 0.5 fine tubular pores; 75 percent clay films on faces of peds and in pores; fragments; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # 40A22660. This horizon retains some rock structure; sandy loam material accumulating in seams.
    C—132 to 152 centimeters (52.0 to 59.8 inches); yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4), moist; sandy clay loam; very hard, firm, very sticky, very plastic; 21.0 medium and coarse roots; 0.5 fine tubular pores; 10 percent clay films on faces of peds and 75 percent clay films in root channels and/or pores; fragments; strongly acid, pH 5.5, hellige-truog. Lab sample # 40A22661. Rock structure.