IDENTIFIERS

  • Current Taxon Name (Soil Name): Grassmountain
  • OSD
  • Series Extent
  • User Site ID: 00-MHF-09
  • User Pedon ID: S2000OR003015
  • Vegetation Plot ID: 00-MHF-09
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 01N0320
  • NCSS Pedon Lab Data NASIS Record ID - 14553
  • Print Date: 11/21/2024

    • 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: 44.4231339
  • Std. Longitude: -123.6284180
  • Datum: WGS84
  • Township: 13S
  • Range: 8W
  • Section: 22
  • PLSS Details: 660 feet north and 2640 feet west of the southeast corner
  • Location Description: Benton Co, Oregon.
  • Map Unit: 74—Grassmountain-Fiverivers-Chintimini complex, 5 to 30 percent slopes
  • State: Oregon
  • County: OR003—Benton
  • MLRA: 1—Northern Pacific Coast Range, Foothills, and Valleys
  • Non-MLRA Soil Survey Area: OR003—Benton County, Oregon
  • 7.5 Minute USGS Quad: 44123-D6—Grass Mountain, Oregon

    • PEDON

  • Describers Name: Matthew H. Fillmore, Kelley D. Paup-Lefferts
  • Current Taxonomic Class: Fine-loamy, isotic, frigid Typic Dystrudepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 15
  • Correlated Information:
  • Soil Name - Grassmountain
  • PSC - 25 to 102 cm.
  • Classificaton Date - 6/6/2003
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Grassmountain
  • Classificaton Date - 7/7/2000
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium derived from sandstone and siltstone
  • Landscape: mountains
  • Landform: mountain
  • Geomorphic Component Hills: side slope
  • Slope Shape Across: concave
  • Slope Shape Down: concave
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: weakly coherent sandstone and siltstone at 170cm with 10 to <45
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/7/2000 (actual site observation date)
  • 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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACCI

    ALRU2

    FRPU7

    GASH

    MANE2

    POMU

    PSME

    PTERI

    RHMA3

    RUBUS

    TSHE

    VAPA

    VIAM

    XEROP

    Acer circinatum

    Alnus rubra

    Frangula purshiana

    Gaultheria shallon

    Mahonia nervosa

    Polystichum munitum

    Pseudotsuga menziesii

    Pteridium

    Rhododendron macrophyllum

    Rubus

    Tsuga heterophylla

    Vaccinium parvifolium

    Vicia americana

    Xerophyllum

    vine maple

    red alder

    Cascara buckthorn

    salal

    Cascade barberry

    western swordfern

    Douglas-fir

    brackenfern

    Pacific rhododendron

    blackberry

    western hemlock

    red huckleberry

    American vetch

    beargrass

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

    bedrock, paralithic

    weakly coherent

    170 - 196

    - 25 -

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

    ochric epipedon

    andic soil properties

    cambic horizon

    paralithic contact

    3—30

    3—13

    30—109

    170—196

    —27—

    —10—

    —79—

    —26—
    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

    12

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    599

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    125

    2794

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    95

    6.7

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    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments; abrupt smooth boundary.; moist when described;
    A—3 to 13 centimeters (1.2 to 5.1 inches); dark brown (7.5YR 3/3), brown (7.5YR 4/3), dry; gravelly medial loam; 24 percent clay; weak fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; moderately smeary; 10.0 very fine roots throughout and 10.0 fine roots throughout; 10.0 very fine irregular and 10.0 fine irregular pores; 2 percent by volume nonflat weakly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 2 percent by volume nonflat weakly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 2 percent by volume nonflat strongly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 15 percent by volume nonflat strongly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments; very strongly acid, pH 4.7; clear smooth boundary. Lab sample # 01N01971; moist when described;
    BA—13 to 30 centimeters (5.1 to 11.8 inches); dark brown (7.5YR 3/4), brown (7.5YR 4/4), dry; paragravelly loam; 24 percent clay; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; weakly smeary; 4.0 very fine roots throughout and 0.5 medium roots throughout and 4.0 fine roots throughout and 0.5 coarse roots throughout; 10.0 very fine tubular and 10.0 fine tubular pores; 2 percent by volume nonflat strongly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 2 percent by volume nonflat weakly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 2 percent by volume nonflat weakly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 10 percent by volume nonflat strongly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments; very strongly acid, pH 5.0; clear smooth boundary. Lab sample # 01N01972; moist when described;
    Bw1—30 to 61 centimeters (11.8 to 24.0 inches); brown (7.5YR 4/4), light brown (7.5YR 6/4), dry; paragravelly loam; 26 percent clay; moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 4.0 very fine roots throughout and 0.5 medium roots throughout and 4.0 fine roots throughout and 0.5 coarse roots throughout; 4.0 fine tubular pores; 2 percent by volume nonflat strongly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 5 percent by volume nonflat weakly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 10 percent by volume nonflat strongly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 15 percent by volume nonflat weakly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments; strongly acid, pH 5.2; clear smooth boundary. Lab sample # 01N01973; moist when described;
    Bw2—61 to 109 centimeters (24.0 to 42.9 inches); strong brown (7.5YR 4/6), reddish yellow (7.5YR 7/6), dry; paracobbly silty clay loam; 28 percent clay; moderate medium subangular blocky, and moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots throughout and 0.5 medium roots throughout and 0.5 fine roots throughout and 0.5 coarse roots throughout; 4.0 fine tubular pores; 5 percent by volume nonflat strongly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 5 percent by volume nonflat strongly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 20 percent by volume nonflat weakly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 20 percent by volume nonflat weakly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments; strongly acid, pH 5.3; clear smooth boundary. Lab sample # 01N01974; moist when described;
    BCt—109 to 170 centimeters (42.9 to 66.9 inches); strong brown (7.5YR 5/6), reddish yellow (7.5YR 7/6), dry; very paracobbly silty clay loam; 30 percent clay; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 0.5 very fine roots throughout and 0.5 medium roots throughout and 0.5 fine roots throughout and 0.5 coarse roots throughout; 4.0 fine tubular pores; 3 percent faint clay films on rock fragments and 3 percent faint clay films on all faces of peds and 3 percent faint clay films on surfaces along pores; 5 percent by volume nonflat strongly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 5 percent by volume nonflat strongly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments and 20 percent by volume nonflat weakly coherent cemented 2-?-75 millimeter sandstone, unspecified fragments and 25 percent by volume nonflat weakly coherent cemented 75-?-250 millimeter sandstone, unspecified fragments; strongly acid, pH 5.5; gradual smooth boundary. Lab sample # 01N01975; moist when described;
    Crt—170 to 195 centimeters (66.9 to 76.8 inches); bedrock; 0.5 coarse roots in cracks; 10 percent distinct clay films on rock fragments; fragments.; moist when described;