IDENTIFIERS

  • Current Taxon Name (Soil Name): Spokane
  • OSD
  • Series Extent
  • User Site ID: S1991ID061024
  • User Pedon ID: 1991ID061024
  • Vegetation Plot ID: S1991ID061024
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 92P0309
  • NCSS Pedon Lab Data NASIS Record ID - 64548
  • 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: 46.1899986
  • Std. Longitude: -116.5788879
  • Datum: WGS84
  • Township: 33N
  • Range: 2W
  • Section: 21
  • PLSS Details: 1600 feet S and 600 feet W of NE corner
  • Location Description: Mud Springs Area. 4 miles SE of Winchester.
  • State: Idaho
  • County: ID061—Lewis
  • MLRA: 9—Palouse and Nez Perce Prairies
  • Non-MLRA Soil Survey Area: ID611—Lewis and Nez Perce Counties, Idaho

    • PEDON

  • Describers Name: T. Hahn
  • Current Taxonomic Class: Coarse-loamy, mixed, superactive, mesic Ultic Haploxerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 24
  • Correlated Information:
  • Soil Name - Spokane
  • PSC - 25 to 66 cm.
  • Classificaton Date - 4/22/2016
  • Classifier - Brian Gardner
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Spokane
  • Taxonomic Class - Fine-loamy, mixed, frigid Ultic Argixeroll
  • Taxon Kind - series
  • Classificaton Date - 10/22/1991
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: hillside
  • Geomorphic Component Hills: nose slope
  • Hill Slope Profile: shoulder
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: with 100 to <200
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/22/1991 (actual site observation date)
  • Air Photo ID: 5-16
  • 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
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    FEID

    KOCR

    LUPIN

    PIPO

    Festuca idahoensis

    Koeleria cristata

    Lupinus

    Pinus ponderosa

    Idaho fescue

    —

    lupine

    ponderosa pine

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    moderately coherent

    66 -

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

    mollic epipedon

    argillic horizon

    paralithic contact

    0—38

    38—66

    66—0

    —-

    —-

    —-
    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

    21

    —

    —

    1305

    —

    200

    635

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 10 centimeters (0.0 to 3.9 inches); brown (10YR 5/3) crushed, very dark grayish brown (10YR 3/2) crushed, moist; coarse sandy loam; 16 percent clay; moderate medium granular structure; soft, friable, nonsticky, nonplastic; 21.0 very fine and fine roots throughout; 0.5 very fine and fine tubular pores; 10 percent by volume subangular 2-39-75 millimeter granite fragments; slightly acid, pH 6.4, bromthymol blue; clear smooth boundary.; dry when described;
    BA—10 to 38 centimeters (3.9 to 15.0 inches); brown (10YR 5/3) crushed, dark brown (10YR 3/3) crushed, moist; fine gravelly coarse sandy loam; 16 percent clay; weak medium and coarse subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; 3.0 very fine and fine roots throughout; 0.5 very fine and fine tubular pores; 15 percent by volume subangular 2-39-75 millimeter granite fragments; slightly acid, pH 6.2, chlorophenol red; clear wavy boundary. Lab sample # 92P01903; dry when described;
    Bt—38 to 66 centimeters (15.0 to 26.0 inches); light yellowish brown (10YR 6/4) crushed, brown (10YR 4/3) dithionite-citrate pretreated, moist; fine gravelly coarse sandy loam; 19 percent clay; weak coarse subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; 3.0 very fine and fine roots throughout; 3.0 very fine and fine tubular pores; prominent dark yellowish brown (10YR 3/4) clay films on vertical faces of peds; 20 percent by volume subangular 2-39-75 millimeter granite fragments; moderately acid, pH 6.0, chlorophenol red; clear irregular boundary. Lab sample # 92P01904; dry when described;. discontinuous - phpvsfiid 1314389; discontinuous - phpvsfiid 1314389
    Cr1—66 to 86 centimeters (26.0 to 33.9 inches); very pale brown (10YR 7/4) crushed bedrock; massive; 0.5 fine roots throughout; fragments.; dry when described;
    Cr2—86 to 152 centimeters (33.9 to 59.8 inches); light gray (10YR 7/2) crushed bedrock; massive; fragments.