IDENTIFIERS

  • Current Taxon Name (Soil Name): KOEPKE
  • OSD
  • Series Extent
  • User Site ID: S1994WA047005
  • User Pedon ID: S1994WA047005
  • Vegetation Plot ID: S1994WA047005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 94P0363
  • NCSS Pedon Lab Data NASIS Record ID - 66541
  • Print Date: 4/25/2025

    • 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: 48.7694435
  • Std. Longitude: -119.2308350
  • Datum: WGS84
  • Township: 38N
  • Range: 28E
  • Section: 25
  • PLSS Details: 400 feet south and 150 feet west of northeast corner
  • State: Washington
  • County: WA047—Okanogan
  • MLRA: 43—Northern Rocky Mountains
  • Non-MLRA Soil Survey Area: WA749—Okanogan National Forest Area, Washington

    • PEDON

  • Describers Name: BJD, DWG
  • Current Taxonomic Class: Ashy over loamy-skeletal, mixed, nonacid, frigid Humic Vitrixerands
  • Current Taxon Kind: taxadjunct
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - KOEPKE
  • PSC - 0 to 100 cm.
  • Classificaton Date - 1/27/2010
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Koepke
  • Taxonomic Class - Ashy over loamy-skeletal, mixed, mesic Humic Vitri
  • Taxon Kind - series
  • Classificaton Date - 5/5/1993
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: mountainside
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: concave
  • Slope Shape Down: concave
  • Runoff: medium
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/5/1993 (actual site observation date)
  • Air Photo ID: 781-131
  • 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
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CARU

    FRAGA

    LAOC

    LIBOL

    PIPO

    PSMEG

    Calamagrostis rubescens

    Fragaria

    Larix occidentalis

    Linnaea borealis var. longiflora

    Pinus ponderosa

    Pseudotsuga menziesii var. glauca

    pinegrass

    strawberry

    western larch

    —

    ponderosa pine

    Rocky Mountain Douglas-fir

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

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

    mollic epipedon

    cambic horizon

    0—53

    46—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

    15

    46

    30.5

    1366

    —

    260

    559

    —

    —

    5.6

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oe—0 to 1 centimeters (0.0 to 0.4 inches); fragments; neutral, pH 6.8, unspecified; clear smooth boundary.
    A1—1 to 21 centimeters (0.4 to 8.3 inches); very dark gray (10YR 3/1) and black (10YR 2/1) loam; moderate fine granular structure; soft, very friable, noncoherent, slightly sticky, nonplastic; weakly smeary; 21.0 very fine and fine roots and 0.5 medium and coarse roots; 5 percent by volume subrounded 2-39-75 millimeter unspecified fragments; neutral, pH 6.8, unspecified; clear smooth boundary. Lab sample # 94P02220
    A2—21 to 54 centimeters (8.3 to 21.3 inches); dark gray (10YR 4/1) and black (10YR 2/1) loam; weak fine subangular blocky, and weak medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; weakly smeary; 21.0 very fine and fine roots and 0.5 medium and coarse roots; 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; neutral, pH 7.0, unspecified; clear wavy boundary. Lab sample # 94P02221
    A3—54 to 59 centimeters (21.3 to 23.2 inches); dark grayish brown (10YR 4/2) and very dark brown (10YR 2/2) loam; weak fine subangular blocky, and weak medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; weakly smeary; 21.0 very fine and fine roots; 3 percent by volume subrounded 75-162-250 millimeter unspecified fragments and 10 percent by volume subrounded 2-39-75 millimeter unspecified fragments; neutral, pH 7.0, unspecified; clear smooth boundary.
    2Cd1—59 to 85 centimeters (23.2 to 33.5 inches); light brownish gray (10YR 6/2) and brown (10YR 5/3) cobbly sandy loam; massive; soft, very friable, noncoherent, nonsticky, nonplastic; 3.0 very fine and fine roots; 10 percent by volume subrounded 75-162-250 millimeter unspecified fragments and 25 percent by volume subrounded 2-39-75 millimeter unspecified fragments; neutral, pH 7.0, unspecified; gradual wavy boundary.
    2Cd2—85 to 105 centimeters (33.5 to 41.3 inches); light brownish gray (2.5Y 6/2) and grayish brown (2.5Y 5/2) gravelly sandy loam; massive; soft, very friable, nonsticky, nonplastic; 0.5 very fine roots; 3 percent by volume subrounded 75-162-250 millimeter unspecified fragments and 30 percent by volume subrounded 2-39-75 millimeter unspecified fragments; neutral, pH 6.8, unspecified; gradual wavy boundary.
    2Cd3—105 to 153 centimeters (41.3 to 60.2 inches); light brownish gray (2.5Y 6/2) and grayish brown (2.5Y 5/2) gravelly sandy loam; massive; hard, friable, slightly sticky, nonplastic; 0.5 very fine roots; 40 percent by volume subrounded 2-39-75 millimeter unspecified fragments.