IDENTIFIERS

  • Current Taxon Name (Soil Name): Porrett
  • OSD
  • Series Extent
  • User Site ID: S2008ID057013
  • User Pedon ID: S2008ID057001
  • Vegetation Plot ID: S2008ID057013
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 09N0075
  • NCSS Pedon Lab Data NASIS Record ID - 24064
  • 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: 46.8661652
  • Std. Longitude: -116.7277527
  • Datum: WGS84
  • Township: 41 N
  • Range: 3 W
  • Section: 28
  • Map Unit: 38—Porrett ashy silt loam, 0 to 3 percent slopes
  • Country: US—United States
  • State: Idaho
  • County: ID057—Latah
  • MLRA: 43A—Northern Rocky Mountains
  • Non-MLRA Soil Survey Area: ID610—Latah County Area, IdahoID057—Latah County, Idaho
  • 7.5 Minute USGS Quad: 46116-G6—Stanford, Idaho

    • PEDON

  • Describers Name: BDG
  • Current Taxonomic Class: Fine-silty, isotic, frigid Fragic Epiaqualfs
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Porrett
  • Classificaton Date - 3/29/2013
  • Classifier - Brian Gardner
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - aquic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Porrett
  • Taxonomic Class - Fine-silty, mixed, active, frigid Fragic Epiaqualfs
  • Classificaton Date - 7/31/2008
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - aquic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: volcanic ash and silty alluvium
  • Landscape: mountains
  • Landform: drainageway, flood-plain step
  • Hill Slope Profile: toeslope
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: poorly
  • Flooding: rare flooding
  • Ponding: frequent ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/31/2008 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - other grass/herbaceous cover
  • 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

    ACMI2

    AGGI2

    AMAL2

    CAREX

    COSE16

    GEVI2

    PHAR3

    PHLEU

    PICOL

    THMO

    VECA2

    Achillea millefolium

    Agrostis gigantea

    Amelanchier alnifolia

    Carex

    Cornus sericea

    Geranium viscosissimum

    Phalaris arundinacea

    Phleum

    Pinus contorta var. latifolia

    Thamnosma montana

    Veratrum californicum

    common yarrow

    redtop

    Saskatoon serviceberry

    sedge

    redosier dogwood

    sticky purple geranium

    reed canarygrass

    timothy

    lodgepole pine

    turpentinebroom

    California false hellebore

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

    ochric epipedon

    volcanic glass

    redox concentrations

    episaturation

    albic horizon

    albic materials

    redox depletions with chroma 2 or less

    argillic horizon

    fragic soil properties

    2—58

    2—16

    16—161

    16—106

    58—75

    58—161

    58—92

    75—106

    75—138

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    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

    3

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    866

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    215

    838

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    Oi—0 to 2 centimeters (0.0 to 0.8 inches); slightly decomposed plant material; fragments; abrupt smooth boundary.; observed in pit, small
    A1—2 to 16 centimeters (0.8 to 6.3 inches); very dark gray (10YR 3/1) crushed, dark grayish brown (10YR 4/2) crushed, dry; ashy silt loam; 18 percent clay; strong very fine granular, and strong fine granular structure; hard, friable, slightly sticky, moderately plastic; 5.0 very fine roots throughout and 5.0 fine roots throughout and 0.2 coarse roots throughout; 21.0 very fine interstitial pores; fragments; clear wavy boundary. Lab sample # 09N00536; observed in pit, small
    A2—16 to 30 centimeters (6.3 to 11.8 inches); very dark grayish brown (10YR 3/2) crushed, light brownish gray (10YR 6/2) crushed, dry; silt loam; 26 percent clay; moderate medium subangular blocky parts to strong fine granular structure; hard, friable, moderately sticky, very plastic; 1.0 very fine roots between peds and 1.0 fine roots between peds; 21.0 very fine interstitial pores; 2 percent faint clay films on surfaces along pores and 30 percent faint silt coats on surfaces along pores; 10 percent fine iron-manganese masses; fragments; clear wavy boundary. Lab sample # 09N00537; observed in pit, small
    ABt—30 to 58 centimeters (11.8 to 22.8 inches); very dark brown (10YR 2/2) exterior and very dark grayish brown (10YR 3/2) crushed, pale brown (10YR 6/3) exterior and pale brown (10YR 6/3) crushed, dry; silty clay loam; 27 percent clay; weak coarse subangular blocky parts to strong fine subangular blocky structure; very hard, firm, moderately sticky, very plastic; 1.0 very fine roots between peds and 1.0 fine roots between peds; 4.0 very fine tubular pores; 20 percent medium iron-manganese masses; fragments; abrupt smooth boundary. Lab sample # 09N00538; observed in pit, small
    E—58 to 75 centimeters (22.8 to 29.5 inches); grayish brown (2.5Y 5/2) interior, light gray (10YR 7/2) interior, dry; silt loam; 19 percent clay; weak thick platy parts to moderate medium subangular blocky, and weak thick platy parts to moderate fine subangular blocky structure; hard, friable, moderately sticky, very plastic; 0.5 very fine roots between peds; 3.0 very fine interstitial pores; 2 percent faint silt coats on surfaces along pores and 3 percent faint clay films on surfaces along pores; 8 percent fine iron-manganese nodules and 95 percent iron depletions; fragments; abrupt smooth boundary. Lab sample # 09N00539; observed in pit, small
    Btx1—75 to 92 centimeters (29.5 to 36.2 inches); 65 percent dark grayish brown (10YR 4/2) and 35 percent grayish brown (2.5Y 5/2), 65 percent light brownish gray (10YR 6/2) and 35 percent light gray (2.5Y 7/2), dry; silt loam; 16 percent clay; weak thick platy parts to moderate medium subangular blocky, and weak thick platy parts to moderate fine subangular blocky structure; hard, friable, slightly sticky, moderately plastic; brittle; 0.5 very fine roots between peds and 0.5 fine roots between peds; 21.0 very fine interstitial pores; 5 percent faint silt coats on surfaces along pores and 15 percent faint clay films on surfaces along pores; 5 percent fine iron-manganese nodules and 95 percent iron depletions; fragments; abrupt irregular boundary. Lab sample # 09N00540; observed in pit, small. Horizion contains ~65% lamellae and pockets of clay accumulation. Lamallae have a mean thickness of ~1 cm.
    Btx2—92 to 106 centimeters (36.2 to 41.7 inches); brown (10YR 4/3) interior, very pale brown (10YR 7/3) interior, dry; silt loam; 18 percent clay; weak thick platy parts to moderate medium subangular blocky, and weak thick platy parts to moderate fine subangular blocky structure; moderately hard, friable, slightly sticky, moderately plastic; brittle; 1.0 very fine roots between peds and 1.0 fine roots between peds; 3.0 very fine interstitial and 0.5 very fine tubular pores; 5 percent distinct clay films on all faces of peds and 20 percent distinct clay films on surfaces along pores and 70 percent prominent silt coats on all faces of peds; 2 percent fine iron-manganese nodules and 30 percent iron depletions; fragments; clear smooth boundary. Lab sample # 09N00541; observed in pit, small
    Cg1—106 to 138 centimeters (41.7 to 54.3 inches); 75 percent pale brown (10YR 6/3) and 25 percent brown (10YR 5/3), 75 percent light gray (10YR 7/2) and 25 percent very pale brown (10YR 7/4), dry; stratified stratified loam to silt loam; 10 percent clay; weak thick platy structure; moderately hard, friable, nonsticky, nonplastic; brittle; 0.5 very fine interstitial pores; 5 percent faint silt coats on surfaces along pores and 5 percent faint clay bridges on surfaces along pores; 3 percent fine iron-manganese nodules and 75 percent iron depletions; fragments; abrupt smooth boundary. Lab sample # 09N00542; observed in pit, small
    Cg2—138 to 161 centimeters (54.3 to 63.4 inches); light olive brown (2.5Y 5/3), light gray (2.5Y 7/2), dry; silt loam; 16 percent clay; weak thick platy structure; slightly sticky, moderately plastic; 3.0 very fine interstitial pores; 10 percent faint clay films on surfaces along pores and 25 percent faint silt coats on surfaces along pores; 5 percent fine iron-manganese masses and 95 percent iron depletions; fragments. Lab sample # 09N00543; observed in pit, small