IDENTIFIERS

  • Current Taxon Name (Soil Name): Onahu
  • OSD
  • Series Extent
  • User Site ID: S1998CO069002
  • User Pedon ID: 98CO069002
  • Vegetation Plot ID: S1998CO069002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 99P0040
  • NCSS Pedon Lab Data NASIS Record ID - 10900
  • 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: 40.5127792
  • Std. Longitude: -105.6438904
  • Datum: WGS84
  • Location Description: approximately 1 mile west of Skull Point at the headwaters of the south fork of the Cache La Poudre River in Rocky Mountain National Park.
  • State: Colorado
  • County: CO069—Larimer
  • MLRA: 48A—Southern Rocky Mountains
  • Non-MLRA Soil Survey Area: CO651—Rocky Mountain National Park, Colorado, Parts of Boulder, Grand, and Larimer Counties
  • 7.5 Minute USGS Quad: 40105-E6—Comanche Peak, Colorado

    • PEDON

  • Describers Name: Mike Peterson Melisa Trenchik
  • Current Taxonomic Class: Loamy-skeletal, micaceous, acid Histic Cryaquepts
  • Current Taxon Kind: taxadjunct
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Onahu
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/23/2007
  • Sampled As Information:
  • Soil Name - Histic Cryaquept
  • Taxonomic Class - Histic Cryaquept
  • Classificaton Date - 7/14/1998
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: mountains
  • Landform: mountain
  • Hill Slope Profile: toeslope
  • Slope Position: lower third
  • Runoff: low
  • Drainage Class: poorly
  • Flooding: none flooding
  • Ponding: none ponding
  • Wet Soil Moisture Duration: 120
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/14/1998 (actual site observation date)
  • Plant Association Name: salix/cane2/cale4
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - wetlands
  • 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

    CALE4

    CALTH

    CANE2

    MEAL7

    POGR9

    SANU4

    SANU4

    Caltha leptosepala

    Caltha

    Carex nebrascensis

    Mertensia alpina

    Potentilla gracilis

    Salix nummularia

    Salix nummularia

    white marsh marigold

    marsh marigold

    Nebraska sedge

    alpine bluebells

    slender cinquefoil

    barren ground willow

    barren ground willow

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

    histic epipedon

    umbric epipedon

    0—28

    28—51

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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

    5

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    3426

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    250

    889

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    1.1

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    1.7

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    Oe—0 to 15 centimeters (0.0 to 5.9 inches); black (10YR 2/1), very dark gray (10YR 3/1), dry; mucky peat; slightly hard, friable, nonsticky, nonplastic; fragments; noneffervescent; clear smooth boundary.; wet when described;
    Oa—15 to 28 centimeters (5.9 to 11.0 inches); very dark grayish brown (10YR 3/2), very dark brown (10YR 2/2), dry; muck; soft, very friable, nonsticky, nonplastic; fragments; noneffervescent; clear smooth boundary.; wet when described;
    Bg1—28 to 38 centimeters (11.0 to 15.0 inches); dark brown (10YR 3/3), brown (10YR 4/3), dry; fine sandy loam; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; 5 percent medium very dark grayish brown (2.5Y 3/2) iron depletions throughout; 5 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; strongly acid, pH 5.5, hellige-truog; clear smooth boundary. Lab sample # 99P00229; wet when described;
    Bg2—38 to 50 centimeters (15.0 to 19.7 inches); very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dry; loam; weak fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 2 percent fine dark reddish gray (5YR 4/2) iron depletions throughout and 15 percent medium strong brown (7.5YR 5/6) masses of oxidized iron throughout; 3 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; very strongly acid, pH 4.6, hellige-truog. Lab sample # 99P00230; wet when described;. Ground was frozen at a depth of 20 inches.