IDENTIFIERS

  • Current Taxon Name (Soil Name): Akaka
  • OSD
  • Series Extent
  • User Site ID: S1961HI001002
  • User Pedon ID: S1961HI001002
  • Vegetation Plot ID: S1961HI001002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A5584
  • NCSS Pedon Lab Data NASIS Record ID - 42827
  • Print Date: 4/19/2025

    • 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: 19.7477779
  • Std. Longitude: -155.1736145
  • Datum: WGS84
  • Location Description: Hawaii County, Island of Hawaii; Piihonua Quadrangle; about 1 mile above radio station tower above Amalu in eucalptyus forest.
  • State: Hawaii
  • County: HI001—Hawaii
  • 7.5 Minute USGS Quad: THI0132—Piihonua, Hawaii

    • PEDON

  • Current Taxonomic Class: Hydrous, amorphic, isomesic Acrudoxic Hydrudands
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Akaka
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - AKAKA
  • Classificaton Date - 11/15/1961
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Runoff: low
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/15/1961 (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

    ACKO

    CYATH

    Acacia koa

    Cyathea

    koa

    treefern

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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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    A11—0 to 18 centimeters (0.0 to 7.1 inches); silty clay loam; moderate fine and medium subangular blocky structure; friable, slightly sticky; moderately smeary; 3.0 roots; 3.0 fine and 0.5 coarse pores; 3 percent worm casts; fragments; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # 40A41918. dark reddish brown (7YR 3/4); upper 2 inches near massive; plastic, (3 to 8 inches thick).
    A12—18 to 38 centimeters (7.1 to 15.0 inches); dark reddish brown (5YR 3/4) clay loam; moderate fine and medium subangular blocky structure; friable, slightly sticky; moderately smeary; 0.5 roots; 3.0 medium and coarse pores; fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 40A41919. plastic; few firm pebble-size fragments of volcanic ash, (2 to 8 inches thick).
    B1—38 to 58 centimeters (15.0 to 22.8 inches); reddish brown (5YR 4/4) silty clay loam; reddish brown (2.5YR 4/4) and 1 percent dark brown (7.5YR 3/2) coarse faint mottles; moderate fine and medium subangular blocky structure; friable, slightly sticky; moderately smeary; 0.5 roots; 3.0 fine and medium pores; fragments; strongly acid, pH 5.4, hellige-truog; gradual wavy boundary. Lab sample # 40A41920. plastic; thick gelatin-like coatings on faces of peds, ( 6 to 8 inches thick).
    B21—58 to 80 centimeters (22.8 to 31.5 inches); dark reddish brown (5YR 3/4) silty clay loam; 3 percent reddish brown (2.5YR 4/4) coarse faint mottles; moderate medium prismatic parts to strong fine and medium subangular blocky structure; friable; strongly fluid; 0.5 roots; 21.0 very fine and 0.5 coarse pores; fragments; strongly acid, pH 5.4, hellige-truog; abrupt wavy boundary. Lab sample # 40A41921. sticky, plastic; few pebble-size fragments of volcanic ash, (6 to 11 inches thick).
    B22—80 to 95 centimeters (31.5 to 37.4 inches); dark reddish brown (2.5YR 3/4) silty clay loam; weak medium prismatic structure; firm, slightly sticky; strongly fluid; 0.5 roots; 3.0 very fine and fine pores; 21 percent fine reddish yellow (7.5YR 6/6); fragments; moderately acid, pH 5.9, hellige-truog; abrupt wavy boundary. Lab sample # 40A41922. and pockets of dark brown (7.5YR 3/2); plastic; thick gelatin-like coatings on peds, (2 to 8 inches thick).
    B23—95 to 120 centimeters (37.4 to 47.2 inches); silty clay loam; moderate medium prismatic structure; firm, slightly sticky; strongly fluid; 0.5 roots; 3.0 fine pores; fragments; moderately acid, pH 5.7, hellige-truog; clear wavy boundary. Lab sample # 40A41923. dark reddish brown (7YR 3/4); common vertical streaks of reddish brown (5YR 4/4); plastic; thick gelatin-like coatings on faces of peds, (6 to 12 inches thick).
    B24—120 to 130 centimeters (47.2 to 51.2 inches); dark red (2.5YR 3/6) silty clay loam; moderate medium prismatic structure; firm, slightly sticky; strongly fluid; 0.5 roots; 3.0 very fine pores; 21 percent fine reddish yellow (7.5YR 6/6); fragments; moderately acid, pH 5.6, hellige-truog; abrupt wavy boundary. Lab sample # 40A41924. plastic; some prism faces are smooth, (4 to 8 inches thick).
    B25—130 to 180 centimeters (51.2 to 70.9 inches); silty clay loam; moderate medium prismatic structure; friable, slightly sticky; strongly fluid; 0.5 roots; 3.0 very fine and fine pores; fragments; moderately acid, pH 5.7, hellige-truog. Lab sample # 40A41925. dark reddish brown (7YR 3/4); plastic; thick gelatin-like coatings on peds; few pressure faces; few fine pebble-size concretions of gibbsite.