IDENTIFIERS

  • Current Taxon Name (Soil Name): HAKUMA
  • OSD
  • Series Extent
  • User Site ID: S2006HI001004
  • User Pedon ID: S2006HI001004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 06N0681
  • NCSS Pedon Lab Data NASIS Record ID - 18606
  • Print Date: 12/10/2025

    • 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: 19.6046658
  • Std. Longitude: -154.9888916
  • Datum: WGS84
  • State: Hawaii
  • County: HI001—Hawaii
  • MLRA: 159A—Humid and Very Humid Volcanic Ash Soils on Low and Intermediate Rolling Mountain Slopes
  • 7.5 Minute USGS Quad: THI0124—Pahoa North, Hawaii

    • PEDON

  • Describers Name: Patrick Niemeyer
  • Current Taxonomic Class: Hydrous, acid, isohyperthermic Lithic Hapludands
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 4
  • Correlated Information:
  • Soil Name - HAKUMA
  • Classificaton Date - 4/3/2006
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - perudic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Hakuma
  • Classificaton Date - 10/12/2005
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: basic volcanic ash over pahoehoe lava
  • Landform: pahoehoe lava flow on shield volcano
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: rare ponding for very brief periods
  • Bedrock: strongly coherent pahoehoe lava at 31cm
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/12/2005 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - tropical
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    indurated

    19 -

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

    andic soil properties

    ochric epipedon

    lithic contact

    0—19

    1—19

    19—

    —-

    —-

    —-
    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

    —

    —

    —

    —

    —

    3500

    —

    365

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 10 centimeters (0.0 to 3.9 inches); very dark brown (10YR 2/2) mucky medial loam; moderate medium granular structure; friable, slightly sticky, nonplastic; nonsmeary; moderate permeability; moderate excavation difficulty; 4.0 fine roots throughout; 10 percent by volume nonflat subrounded very strongly coherent cemented 2-50-75 millimeter pahoehoe lava fragments; extremely acid, pH 4.4, pH meter; clear smooth boundary. Lab sample # 06N02868; moist when described; observed in pit, small
    Aw2—10 to 19 centimeters (3.9 to 7.5 inches); very dark brown (10YR 2/2) very cobbly medial loam; moderate medium granular structure; friable, slightly sticky, nonplastic; weakly smeary; moderate permeability; moderate excavation difficulty; 0.9 fine roots throughout; 20 percent by volume nonflat subrounded very strongly coherent cemented 75-125-250 millimeter pahoehoe lava fragments and 20 percent by volume nonflat subrounded very strongly coherent cemented 2-50-75 millimeter pahoehoe lava fragments; very strongly acid, pH 4.5, pH meter; abrupt smooth boundary. Lab sample # 06N02869; moist when described; observed in pit, small
    2R—29 centimeters (11.4 inches); bedrock; very slow permeability; fragments.; observed in pit, small