IDENTIFIERS

  • Current Taxon Name (Soil Name): Allamakee
  • OSD
  • Series Extent
  • User Site ID: S1985IA005006
  • User Pedon ID: S1985IA005006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Print Date: 12/5/2025

    • 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: 43.3615837
  • Std. Longitude: -91.4320831
  • Datum: WGS84
  • GPS - Positional Error: 10.00
  • Township: 99N
  • Range: 5W
  • Section: 28
  • PLSS Details: 1900 feet north and 60 feet west of the southeast corner
  • Location Description: about 4 miles east of Hanover, Iowa
  • Country: US—United States
  • State: Iowa
  • County: IA005—Allamakee
  • MLRA: 105—Upper Mississippi River Bedrock Controlled Uplands and Valleys
  • Regional Office: NC—North Central
  • MLRA Soil Survey Area: NC-ONA—Onalaska, Wisconsin
  • Non-MLRA Soil Survey Area: IA005—Allamakee County, Iowa
  • 7.5 Minute USGS Quad: 43091-C4—Waukon, Iowa

    • PEDON

  • Describers Name: Robert Vobora
  • Current Taxonomic Class: Fine-silty over clayey, mixed, superactive, mesic Mollic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: Windows Pedon
  • Pedon #: 22
  • Correlated Information:
  • Soil Name - Allamakee (flagged as OSD)
  • PSC - 25 to 100 cm.
  • Classificaton Date - 9/13/1985
  • Classifier - Robert Vobora
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Allamakee (flagged as OSD)
  • Taxonomic Class - Fine-silty over clayey, mixed, superactive, mesic Mollic Hapludalfs
  • Taxon Kind - series
  • PSC - 25 to 100 cm.
  • Classificaton Date - 9/13/1985
  • Classifier - Robert Vobora
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: not certified
  • QC Status: not reviewed
  • QA Status: not reviewed


    • SITE

  • Parent Material: loess over pedisediment
  • Geomorphic Component Hills: nose slope
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: strongly coherent slight weathered dolomite (dolostone) at 229cm with 45 to <100
  • Surface Fragments:
  • Benchmark Soil?: no
  • RaCA Information:
  • Plot/Site Set Up By - Unknown
  • Plot or Site Recorder - Unknown

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/13/1985 (actual site observation date)
  • Data Collector: Robert Vobora
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion sheet
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    abrupt textural change

    —

    91 - 91

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

    lithologic discontinuity

    redox concentrations

    redox depletions with chroma 2 or less

    ochric epipedon

    argillic horizon

    abrupt textural change

    —

    —

    —

    0—23

    23—127

    91—91

    —-

    —-

    —-

    —-

    —-

    —-
    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

    6

    —

    —

    1050

    —

    270

    899

    —

    155

    8

    22

    -5

    12

    22

    2

    558

    —

    00134624

    LANSING 4 SE, IA US

    NOAA
    Ap—0 to 23 centimeters (0.0 to 9.1 inches); very dark grayish brown (10YR 3/2) and 10 percent dark yellowish brown (10YR 4/4), grayish brown (10YR 5/2), dry; silt loam; 22 percent clay; weak fine subangular blocky parts to weak very fine and fine granular structure; friable; 10.0 very fine roots throughout; fragments; noneffervescent, by hcl, 1n; neutral, pH 6.8, unspecified; abrupt smooth boundary.
    Bt1—23 to 46 centimeters (9.1 to 18.1 inches); dark yellowish brown (10YR 4/6) silt loam; 25 percent clay; weak fine and medium subangular blocky structure; friable; 10.0 very fine roots throughout; 10 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.5, unspecified; gradual smooth boundary. discontinuous - phpvsfiid 404679; discontinuous - phpvsfiid 404679
    Bt2—46 to 71 centimeters (18.1 to 28.0 inches); yellowish brown (10YR 5/4) silty clay loam; 28 percent clay; weak fine prismatic parts to moderate fine and medium subangular blocky structure; friable; 1.0 very fine roots throughout; 2 percent faint brown (10YR 4/3), moist, clay films on all faces of peds and 10 percent prominent white (10YR 8/1), dry, silt coats on all faces of peds; 2 percent fine prominent noncoherent cemented dark reddish brown (5YR 2/2), moist, iron-manganese masses throughout; fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.2, unspecified; abrupt smooth boundary. discontinuous - phpvsfiid 404680; discontinuous - phpvsfiid 404681; discontinuous - phpvsfiid 404680; discontinuous - phpvsfiid 404681
    2Bt3—71 to 91 centimeters (28.0 to 35.8 inches); brown (7.5YR 4/4) silty clay loam; 35 percent clay; weak fine and medium subangular blocky structure; friable; 1.0 very fine roots between peds; 25 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 10 percent fine distinct grayish brown (10YR 5/2), moist, masses of reduced iron throughout and 10 percent fine prominent noncoherent cemented dark reddish brown (5YR 2/2), moist, iron-manganese masses throughout; 2 percent by volume chert fragments observed by visual inspection method; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, unspecified; abrupt wavy boundary. discontinuous - phpvsfiid 404682; discontinuous - phpvsfiid 404682
    2Bt4—91 to 117 centimeters (35.8 to 46.1 inches); yellowish red (5YR 4/6) very cobbly clay; 50 percent clay; moderate very fine and fine subangular blocky structure; firm; 5 percent by volume sandstone, unspecified fragments observed by visual inspection method and 65 percent by volume chert fragments observed by visual inspection method; very slight effervescence, by hcl, unspecified; slightly acid, pH 6.2, unspecified; clear wavy boundary.
    2Bt5—117 to 127 centimeters (46.1 to 50.0 inches); reddish brown (5YR 4/4) clay loam; 35 percent clay; weak fine and medium subangular blocky structure; friable; fragments; strong effervescence, by hcl, unspecified; slightly alkaline, pH 7.6, unspecified; abrupt wavy boundary.
    3C—127 to 203 centimeters (50.0 to 79.9 inches); yellowish brown (10YR 5/6) and strong brown (7.5YR 5/6) and strong brown (7.5YR 4/6) stratified stratified fine sand to loamy fine sand to fine sandy loam to sandy clay loam; 5 percent clay; structureless massive; loose; 3 percent by volume sandstone, calcareous fragments observed by visual inspection method; strong effervescence, by hcl, unspecified; slightly alkaline, pH 7.6, unspecified.