IDENTIFIERS

  • Current Taxon Name (Soil Name): Niu
  • OSD
  • Series Extent
  • User Site ID: 2020HI960006
  • User Pedon ID: 2020HI960006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0275
  • NCSS Pedon Lab Data NASIS Record ID - 63322
  • User Project ID: 2020-2KEA-EDIT-002
  • Project Name: MLRA 166 - Island of Kauai
  • Print Date: 12/6/2025

    • 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: 22.0352778
  • Std. Longitude: -159.7436111
  • Datum: WGS84
  • Location Description: Island of Kauai, Kauai County, Hawaii; on Niu Ridge.
  • Map Unit: NcD—Niu silty clay loam, 12 to 20 percent slopes, MLRA 158
  • State: Hawaii
  • County: HI007—Kauai
  • MLRA: 158—Semiarid and Subhumid Low Mountain Slopes
  • 7.5 Minute USGS Quad: THI0078—Kekaha, Hawaii

    • PEDON

  • Current Taxonomic Class: Very-fine, kaolinitic, isohyperthermic Rhodic Eutrustox
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Correlated Information:
  • Soil Name - Niu
  • Classificaton Date - 2/19/2020
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from igneous rock
  • Landscape: mountains on island
  • Landform: ridge
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/19/2020 (entry creation date)
  • Data Collector: Mike Kolman
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    oxic horizon

    0—25

    25—152

    —-

    —-
    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

    —

    —

    —

    312

    —

    686

    —

    —

    22

    23

    20

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 25 centimeters (0.0 to 9.8 inches); dark reddish brown (2.5YR 3/4), dark reddish brown (2.5YR 3/4), moist; silty clay loam; weak fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 2.5 very fine and fine roots and 2.5 medium roots; fragments; violent effervescence, by hydrogen peroxide, unspecified; moderately acid, pH 5.9, hellige-truog; abrupt wavy boundary. Lab sample # 91P01659. common very fine and fine roots; common medium roots
    Bo1—25 to 56 centimeters (9.8 to 22.0 inches); red (2.5YR 4/6), dark red (2.5YR 3/6), moist; silty clay loam; weak coarse prismatic structure; hard, friable, moderately sticky, moderately plastic; 2.5 very fine and fine roots and 2.5 medium roots; 5.5 very fine and fine and 2.5 medium pores; faint coats on faces of peds; fragments; slight effervescence, by hydrogen peroxide, unspecified; neutral, pH 6.8, hellige-truog; gradual smooth boundary. Lab sample # 91P01660. coatings look like clay films; upper 2 inches compacted by tillage; common very fine and fine roots; common medium roots; patchy - phpvsfiid 1800680; patchy - phpvsfiid 1800680
    Bo2—56 to 91 centimeters (22.0 to 35.8 inches); dark red (10R 3/6), dark red (10R 3/6), moist; silty clay; moderate very fine and fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 2.5 very fine and fine roots and 0.5 medium roots; 0.5 medium and 2.5 fine pores; distinct coats on faces of peds; fragments; slight effervescence, by hydrogen peroxide, unspecified; neutral, pH 6.8, hellige-truog; gradual smooth boundary. Lab sample # 91P01661. coatings look like clay films; compact in places; few medium roots; common very fine and fine roots; continuous - phpvsfiid 1800681; continuous - phpvsfiid 1800681
    Bo3—91 to 152 centimeters (35.8 to 59.8 inches); dark red (10R 3/6), dark red (10R 3/6), moist; silty clay; moderate very fine and fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 0.5 very fine and fine roots and 0.5 medium roots; 2.5 very fine and fine and 0.5 medium pores; distinct coats on faces of peds; fragments, by hydrogen peroxide, unspecified; neutral, pH 6.8, hellige-truog. Lab sample # 91P01662. coatings look like clay films; compact in place; few very fine and fine roots; few medium roots; continuous - phpvsfiid 1800682; continuous - phpvsfiid 1800682