IDENTIFIERS

  • Current Taxon Name (Soil Name): Ahwahnee
  • OSD
  • Series Extent
  • User Site ID: S1990CA039001
  • User Pedon ID: 90CA039001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0420
  • NCSS Pedon Lab Data NASIS Record ID - 63466
  • Print Date: 4/24/2025

    • 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: 37.1061096
  • Std. Longitude: -119.7208328
  • Datum: WGS84
  • Township: 9S
  • Range: 21E
  • Section: 31
  • PLSS Details: 701 meters west, 732 meters south of NE corner
  • State: California
  • County: CA039—Madera

    • PEDON

  • Describers Name: Kim Chang and John Munn
  • Current Taxonomic Class: Coarse-loamy, mixed, thermic Mollic Haploxeralfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Sampled As Information:
  • Soil Name - Ahwahnee
  • Taxonomic Class - Coarse-loamy, mixed, thermic Mollic Haploxeralfs
  • PSC - 28 to 53 cm.
  • Classificaton Date - 11/1/1990
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Geomorphic Component Hills: head slope
  • Slope Shape Down: concave
  • Runoff: low
  • Drainage Class: somewhat excessively
  • Bedrock: with <10
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/1/1990 (actual site observation date)
  • Microrelief Kind: microdepression
  • Microrelief Elevation: 1
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    durinodes

    argillic horizon

    0—28

    28—53

    —-

    —-
    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

    13

    —

    —

    402

    —

    51

    —

    —

    16

    27

    6

    17

    28

    7

    —

    —

    —

    —

    —
    O—0 to 3 centimeters (0.0 to 1.2 inches); fragments; abrupt wavy boundary. loose litter of dry annual grasses and forb parts
    A1—3 to 21 centimeters (1.2 to 8.3 inches); brown (10YR 5/3) exterior, dark brown (10YR 3/3) exterior, moist; coarse sandy loam; weak coarse subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; 2.5 very fine roots throughout; 2.5 very fine tubular and 5.5 very fine interstitial pores; fragments; slightly acid, pH 6.5, hellige-truog; clear wavy boundary. Lab sample # 91P02411; dry when described;. common very fine roots throughout
    A2—21 to 31 centimeters (8.3 to 12.2 inches); brown (10YR 5/3) exterior, dark brown (10YR 3/3) exterior, moist; coarse sandy loam; weak medium subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; 2.5 very fine roots throughout; 5.5 very fine tubular and 5.5 very fine interstitial pores; fragments; neutral, pH 7.0, hellige-truog; abrupt wavy boundary. Lab sample # 91P02412; dry when described;. common very fine roots throughout
    Bt—31 to 56 centimeters (12.2 to 22.0 inches); pale brown (10YR 6/3) exterior, dark brown (10YR 3/3) exterior, moist; coarse sandy loam; moderate coarse subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; 0.5 very fine roots throughout; 2.5 very fine tubular and 5.5 very fine interstitial pores; 15 percent distinct clay bridges between sand grains and 15 percent distinct clay films on faces of peds; fragments; neutral, pH 7.0, hellige-truog. Lab sample # 91P02413; dry when described;. few clay bridging surface features between sand grains; few clay films surface features on faces of peds; few very fine roots throughout; continuous - phpvsfiid 234035; continuous - phpvsfiid 234036; continuous - phpvsfiid 234035; continuous - phpvsfiid 234036
    Cr—56 to 77 centimeters (22.0 to 30.3 inches); weathered bedrock; fragments. Lab sample # 91P02414. weathered quartz-diorite