IDENTIFIERS

  • Current Taxon Name (Soil Name): Stumpatil
  • OSD
  • Series Extent
  • User Site ID: 99CA729004
  • User Pedon ID: 99CA729004
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 00P0467
  • NCSS Pedon Lab Data NASIS Record ID - 11972
  • Print Date: 12/6/2025

    • 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: 38.6836944
  • Std. Longitude: -119.9574722
  • Datum: WGS84
  • Township: 10N
  • Range: 18E
  • Section: 25
  • PLSS Details: about 2,250 feet south and 1,000 feet eastof the northwest corner of section
  • Location Description: on the Toiyabe National Forest about 1.2 miles southeast of Red Lake
  • Map Unit: 171—Stumpatil-Morscour association
  • Country: US—United States
  • State: California
  • County: CA003—Alpine
  • MLRA: 22A—Sierra Nevada and Tehachapi Mountains
  • Regional Office: SW—Southwest
  • Non-MLRA Soil Survey Area: CA729—Toiyabe National Forest Area, California
  • 7.5 Minute USGS Quad: 38119-F8—Carson Pass, California

    • PEDON

  • Describers Name: ewb, jbf
  • Current Taxon Kind: taxadjunct
  • Pedon Type: OSD pedon
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Stumpatil (flagged as OSD)
  • PSC - 25 to 100 cm.
  • Classificaton Date - 2/13/2019
  • Classifier - Andrew Paolucci
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - SND
  • Classificaton Date - 9/3/1999
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: mixed till
  • Landscape: mountains
  • Landform: moraine
  • Geomorphic Component Mountains: mountainflank
  • Hill Slope Profile: backslope
  • Slope Shape Down: convex
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments: 35.00 percent nonflat 2- to 75-millimeter 5.00 percent nonflat 250- to 600-millimeter 5.00 percent nonflat 600- to 3000-millimeter
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/3/1999 (actual site observation date)
  • Air Photo ID: 3793-151
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - conifers
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    umbric epipedon

    cambic horizon

    0—28

    28—152

    —28—

    —124—
    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

    25

    —

    —

    2454

    —

    300

    1143

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 15 centimeters (0.0 to 5.9 inches); very dark brown (10YR 2/2), dark grayish brown (10YR 4/2), dry; very gravelly coarse sandy loam; 68 percent sand; 23 percent silt; 9 percent clay; weak fine subangular blocky, and weak medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; common (2.0) very fine roots and very few (0.1) fine roots; common (2.0) very fine interstitial and common (2.0) very fine tubular pores; 5 percent by volume nonflat 600-1800-3000 millimeter unspecified fragments observed by visual inspection method and 50 percent by volume nonflat 2-39-75 millimeter unspecified fragments observed by visual inspection method; moderately acid, pH 5.8, hellige-truog; clear wavy boundary.
    A2—15 to 28 centimeters (5.9 to 11.0 inches); dark brown (10YR 3/3), brown (10YR 5/3), dry; very gravelly coarse sandy loam; 69 percent sand; 23 percent silt; 8 percent clay; weak medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; very few (0.1) very fine roots and common (2.0) medium roots and common (2.0) fine roots; common (2.0) very fine tubular and common (2.0) very fine interstitial pores; 5 percent by volume nonflat 75-163-250 millimeter unspecified fragments observed by visual inspection method and 45 percent by volume nonflat 2-39-75 millimeter unspecified fragments observed by visual inspection method; moderately acid, pH 5.8, hellige-truog; clear wavy boundary. estimate 14% clay
    AB—28 to 66 centimeters (11.0 to 26.0 inches); dark yellowish brown (10YR 3/4), yellowish brown (10YR 5/4), dry; very gravelly coarse sandy loam; 72 percent sand; 22 percent silt; 6 percent clay; moderate medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; very few (0.1) very fine roots and many (6.0) medium roots and many (6.0) fine roots; 2.0 very fine interstitial and common (2.0) very fine tubular pores; 10 percent by volume nonflat 75-163-250 millimeter unspecified fragments observed by visual inspection method and 45 percent by volume nonflat 2-39-75 millimeter unspecified fragments observed by visual inspection method; moderately acid, pH 5.8, hellige-truog; clear wavy boundary.
    Bt—66 to 84 centimeters (26.0 to 33.1 inches); dark yellowish brown (10YR 4/4), pale brown (10YR 6/3), dry; very gravelly sandy loam; 65 percent sand; 28 percent silt; 7 percent clay; moderate medium subangular blocky structure; slightly hard, friable, noncoherent, nonsticky, nonplastic; very few (0.1) very fine roots and common (2.0) very coarse roots and very few (0.1) medium roots and very few (0.1) fine roots; few (0.1) very fine interstitial and few (0.1) very fine tubular pores; 10 percent by volume nonflat 75-163-250 millimeter unspecified fragments observed by visual inspection method and 45 percent by volume nonflat 2-39-75 millimeter unspecified fragments observed by visual inspection method; moderately acid, pH 5.6, hellige-truog; clear wavy boundary.
    Btq—84 to 152 centimeters (33.1 to 59.8 inches); brown (10YR 4/3), pale brown (10YR 6/3), dry; very gravelly sandy loam; 60 percent sand; 31 percent silt; 9 percent clay; structureless massive; very hard, firm, noncoherent, nonsticky, nonplastic; very few (0.1) very fine roots and common (2.0) very coarse roots and very few (0.1) medium roots and very few (0.1) fine roots; few (0.1) very fine interstitial and few (0.1) very fine tubular pores; 10 percent by volume nonflat 75-163-250 millimeter unspecified fragments observed by visual inspection method and 45 percent by volume nonflat 2-39-75 millimeter unspecified fragments observed by visual inspection method; strongly acid, pH 5.4, hellige-truog. 20% discontinuous distinct clay films lining pores and coating rock fragments.