IDENTIFIERS

  • Current Taxon Name (Soil Name): Maho Bay
  • OSD
  • Series Extent
  • User Site ID: S1991VI020012
  • User Pedon ID: 91VI020012
  • Vegetation Plot ID: S1991VI020012
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P1200
  • NCSS Pedon Lab Data NASIS Record ID - 64236
  • Print Date: 4/29/2025

    • 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: 18.3497219
  • Std. Longitude: -64.7458344
  • Datum: WGS84
  • Location Description: Maho Bay watershed; St. John, US VI, 100 feet upslope from S91VI-020-011 and 200 feet upslope from S91VI-020-010.
  • State: Virgin Islands
  • County: VI020—St. John
  • MLRA: 271—Semiarid Mountains and Valleys

    • PEDON

  • Describers Name: G. Acevedo, J. Davis, H. Mount, and B. Hudson on 9
  • Current Taxonomic Class: Loamy, mixed, superactive, isohyperthermic, shallow Typic Haplustolls
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 12
  • Correlated Information:
  • Soil Name - Maho Bay
  • PSC - 0 to 20 cm.
  • Classificaton Date - 2/1/2010
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Maho Bay
  • Taxonomic Class - Loamy, mixed, isohyperthermic, shallow Typic Argiu
  • Taxon Kind - series
  • Classificaton Date - 9/1/1991
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hillside or mountainside
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Shape Down: convex
  • Runoff: negligible
  • Drainage Class: well
  • Bedrock: with <10
  • Surface Fragments: 0.05 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/1/1991 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACACI

    Acacia

    acacia

    —

    —

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

    mollic epipedon

    paralithic contact

    0—20

    20—41

    —-

    —-
    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

    5

    —

    —

    329

    —

    135

    117

    —

    —

    26

    27

    25

    26

    27

    25

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); undecomposed organic matter; fragments; abrupt smooth boundary.; dry when described;. loose leaves and twigs
    A—3 to 13 centimeters (1.2 to 5.1 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; clay loam; 27 percent clay; moderate fine granular structure; hard, friable; 0.5 medium and coarse roots throughout and 2.5 fine roots throughout; 2.5 very fine and fine tubular and 5.5 fine and medium void between rock fragments pores; 5 percent by volume 20-48-75 millimeter sedimentary, unspecified fragments and 10 percent by volume 2-76-150 millimeter sedimentary, unspecified fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 91P07983; dry when described;. size code "C" is for 20 to 75 mm fragments; few medium and coarse roots throughout; common fine roots throughout
    Bw—13 to 23 centimeters (5.1 to 9.1 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; very channery clay loam; moderate very fine and fine subangular blocky structure; hard, friable; 0.5 medium roots throughout and 2.5 fine roots throughout; 5.5 very fine and fine tubular and 5.5 fine and medium void between rock fragments pores; 20 percent by volume 20-48-75 millimeter sedimentary, unspecified fragments and 35 percent by volume 2-76-150 millimeter sedimentary, unspecified fragments; moderately acid, pH 6.0, hellige-truog; abrupt smooth boundary. Lab sample # 91P07984; dry when described;. few medium roots throughout; common fine roots throughout
    Cr—23 to 44 centimeters (9.1 to 17.3 inches); olive brown (2.5Y 4/3), light brownish gray (10YR 6/2), dry; weathered bedrock; massive; 2.5 fine roots around fragments; fragments; strongly acid, pH 5.5, hellige-truog. Lab sample # 91P07985; dry when described;. saprolite that crushes to loam in the fine earth; common fine roots matted around stones