IDENTIFIERS

  • Current Taxon Name (Soil Name): Koolau
  • OSD
  • Series Extent
  • User Site ID: S1958HI007105
  • User Pedon ID: S1958HI007105
  • Vegetation Plot ID: S1958HI007105
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A5588
  • NCSS Pedon Lab Data NASIS Record ID - 42831
  • 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: 22.1632214
  • Std. Longitude: -159.4616699
  • Datum: WGS84
  • Location Description: Island of Kauai, Kauai County, Hawaii; Hanalei Quadrangle, east of the powerline road
  • State: Hawaii
  • County: HI007—Kauai
  • Non-MLRA Soil Survey Area: HI960—Island of Kauai, Hawaii
  • 7.5 Minute USGS Quad: THI0015—Hanalei, Hawaii

    • PEDON

  • Current Taxonomic Class: Medial, amorphic, isohyperthermic Acrudoxic Hapludands
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 105
  • Correlated Information:
  • Soil Name - Koolau
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - KOOLAU
  • Classificaton Date - 11/15/1958
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Runoff: medium
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/15/1958 (actual site observation date)
  • Surface Cover Properties:
  • 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

    CTENI2

    MELAS

    PACO14

    Ctenitis

    Melastoma

    Paspalum conjugatum

    lacefern

    melastoma

    hilograss

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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

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    Oi—0 to 5 centimeters (0.0 to 2.0 inches); fragments. Undecomposed leaves and stems of the uluhe fern.
    A1—5 to 20 centimeters (2.0 to 7.9 inches); light brownish gray (2.5Y 6/2) and light brownish gray (10YR 6/2), light gray (2.5Y 7/1), dry; silty clay; massive; very hard, firm; 21.0 roots; fragments; extremely acid, pH 4.1, hellige-truog; abrupt smooth boundary. Lab sample # 40A41949. coarsely mottled; sticky and plastic; brown stain in root channels. (6 to 8 inches thick).
    A2—20 to 33 centimeters (7.9 to 13.0 inches); gray (2.5Y 5/1), light gray (10YR 7/1), dry; silty clay; yellow (10YR 7/6) coarse mottles; massive; very hard, very firm; 0.5 roots; 21.0 very fine and fine pores; fragments; extremely acid, pH 4.4, hellige-truog; abrupt smooth boundary. Lab sample # 40A41950. sticky and plastic; many medium worm holes; brown (10YR 5/3) coats in pores, (4 to 6 inches thick).
    Bw1—33 to 45 centimeters (13.0 to 17.7 inches); pale yellow (5Y 7/3), white (5Y 8/1), dry; silty clay; light yellowish brown (10YR 6/4) coarse and strong brown (7.5YR 5/6) mottles; weak fine subangular blocky structure; very hard, firm; 0.5 roots; very fine and fine and 21.0 medium pores; fragments; very strongly acid, pH 4.6, hellige-truog; gradual smooth boundary. Lab sample # 40A41951. sticky and plastic, (10 to 14 inches thick).
    Bg1—45 to 105 centimeters (17.7 to 41.3 inches); gray (N 5/),, light gray (5Y 7/2), dry; silty clay; very pale brown (10YR 7/3) and yellow (10YR 7/6) and strong brown (7.5YR 5/8) mottles; massive; hard when dry, friable; weakly smeary; very fine and fine and 21.0 medium pores; fragments; extremely acid, pH 4.4, hellige-truog; gradual smooth boundary. Lab sample # 40A41952. some very firm horizontal lenses; sticky and plastic; thin patchy light brown (7.5YR 6/4) coats in pores look like clay films, (3 to 6 inches thick).
    Bg2—105 to 135 centimeters (41.3 to 53.1 inches); gray (5Y 5/1), pale yellow (5Y 7/3), dry; clay loam; yellowish brown (10YR 5/6) and light olive brown (2.5Y 5/4) and red (2.5YR 4/8) and brown (10YR 4/3) mottles; weak thick platy parts to weak fine angular blocky, and subangular blocky structure; slightly hard, friable; 21.0 very fine and fine and 0.5 medium pores; fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # 40A41953. sticky, plastic and smeary; moderately thick very pale brown (10YR 7/3) coats in some pores look like clay films, (4 to 6 inches thick).
    Bw/Bsm—135 to 185 centimeters (53.1 to 72.8 inches); light olive brown (2.5Y 5/4) clay loam; weak medium platy structure; hard when dry, very firm; fragments; very strongly acid, pH 4.7, hellige-truog. Lab sample # 40A41954. brownish yellow (10YR 6/6) dry coats and horizontal bands of very pale brown (10YR 7/4), brown (7.5YR 5/4), dark grayish brown (10YR 4/2), and dark red (2.5YR 3/6); dark reddish brown (5YR 3/3) 1/8 inch thick hard discontinuous ironstone bands; sticky and plastic; thin coatings between plates.