IDENTIFIERS

  • Current Taxon Name (Soil Name): HAKUMA
  • OSD
  • Series Extent
  • User Site ID: S2006HI001003
  • User Pedon ID: SHI001003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 06N0680
  • NCSS Pedon Lab Data NASIS Record ID - 18605
  • Print Date: 12/8/2025

    • 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: 19.5712776
  • Std. Longitude: -155.0369415
  • Datum: WGS84
  • Location Description: Island of Hawaii; From the village of Keaau follow highway 132 southeast approximately 3.5 miles to Pohaku street. Turn right, southwest, and proceed approximately 2 miles to 40th street. Proceed through the intersection approximately 150 feet and park. Walk approximately 100 feet north to type location at Mountain View quadrangle-19 degrees 34 minutes and 19.3 seconds north latitude and 155 degrees 02 minutes and 11.8 west longitude. (Old Hawaiian Datum, +/- 12 ft; measured by Garmin GPS)
  • 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: THI0115—Mountain View, Hawaii

    • PEDON

  • Describers Name: Patrick Niemeyer
  • Current Taxonomic Class: Hydrous, ferrihydritic, acid, isohyperthermic Lithic Hydrudands
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 3
  • 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 - 8/18/2005
  • 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
  • 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: 8/18/2005 (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

    31 -

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

    andic soil properties

    ochric epipedon

    lithic contact

    0—31

    1—31

    31—

    —-

    —-

    —-
    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

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 20 centimeters (0.0 to 7.9 inches); very dark brown (7.5YR 2.5/2), black (7.5YR 2.5/1), dry; mucky hydrous loam; moderate fine granular structure; friable, slightly sticky, slightly plastic; strongly smeary; moderate permeability; moderate excavation difficulty; 5.0 very fine roots throughout and 0.9 medium roots throughout and 1.0 fine roots throughout; 0.9 very fine dendritic tubular pores; fragments; moderately acid, pH 5.6; abrupt smooth boundary. Lab sample # 06N02866; moist when described; observed in pit, small
    Bw—20 to 31 centimeters (7.9 to 12.2 inches); very dark brown (7.5YR 2.5/3), very dark brown (7.5YR 2.5/2), dry; hydrous loam; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; strongly smeary; moderate permeability; moderate excavation difficulty; 1.0 fine roots throughout; 0.9 fine dendritic tubular pores; fragments; strongly acid, pH 5.5; abrupt smooth boundary. Lab sample # 06N02867; moist when described; observed in pit, small
    2R—31 centimeters (12.2 inches); bedrock; very slow permeability; fragments.; observed in pit, small