IDENTIFIERS

  • Current Taxon Name (Soil Name): Mudgedraw
  • OSD
  • Series Extent
  • User Site ID: S2017TX265003
  • User Pedon ID: S2017TX265003
  • Vegetation Plot ID: S2017tx265003
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 17N0887
  • 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: 30.0164583
  • Std. Longitude: -99.6531967
  • Datum: WGS84
  • State: Texas
  • County: TX265—Kerr
  • MLRA: 81B—Edwards Plateau, Central Part
  • 7.5 Minute USGS Quad: 30099-A6—Garven Store, Texas

    • PEDON

  • Describers Name: Travis Waiser, Ashley Newsome, and Geraldine Vega Pizarro
  • Current Taxonomic Class: Fine, smectitic, thermic Typic Haplusterts
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: PedonPC
  • Sampled As Information:
  • Soil Name - Mudgedraw
  • Taxonomic Class - Fine, smectitic, thermic Typic Haplusterts
  • Taxon Kind - series
  • PSC - 16 to 66 cm.
  • Classificaton Date - 7/25/2017
  • Classifier - Travis Waiser
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey slope alluvium derived from limestone over residuum weathered from limestone
  • Landscape: dissected plateau
  • Landform: ridge
  • Geomorphic Component Hills: base slope
  • Hill Slope Profile: footslope
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: very high
  • Drainage Class: well
  • Bedrock: moderately coherent moderate weathered limestone, unspecified at 124cm with 45 to <100; strongly coherent limestone, unspecified at 136cm with 100 to <200
  • Geology: Segovia formation of the Fredericksburg group. ; Segovia formation of the Fregericksburg group.
  • Surface Fragments: 3.00 percent nonflat subrounded indurated 2- to 75-millimeter limestone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/24/2017 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, savanna
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    A

    Btss1

    Btss2

    Btss3

    Bw

    Cr

    R

    0

    16

    54

    92

    109

    124

    136

    16

    54

    92

    109

    124

    136

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    A

    Btss1

    Btss2

    Btss3

    Bw

    Cr

    R

    0

    16

    54

    92

    109

    124

    136

    16

    54

    92

    109

    124

    136

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    A

    Btss1

    Btss2

    Btss3

    Bw

    Cr

    R

    0

    16

    54

    92

    109

    124

    136

    16

    54

    92

    109

    124

    136

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    Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ARPUP6

    BOSA

    ERIN

    NALE3

    OPENL

    PRGL2

    QUVI

    SAFA2

    SCSC

    SOHA

    Aristida purpurea var. purpurea

    Bothriochloa saccharoides

    Eragrostis intermedia

    Nassella leucotricha

    Opuntia engelmannii var. lindheimeri

    Prosopis glandulosa

    Quercus virginiana

    Salvia farinacea

    Schizachyrium scoparium

    Sorghum halepense

    purple threeawn

    silver bluestem

    plains lovegrass

    Texas wintergrass

    Texas pricklypear

    honey mesquite

    live oak

    mealycup sage

    little bluestem

    Johnsongrass

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    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    bedrock, lithic

    moderately coherent

    strongly coherent

    124 - 136

    136 -

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

    mollic epipedon

    argillic horizon

    slickensides

    cambic horizon

    paralithic materials

    lithic contact

    0—54

    16—109

    16—109

    109—124

    124—136

    136—

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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

    5

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    677.9

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    350

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    A—0 to 16 centimeters (0.0 to 6.3 inches); very dark grayish brown (10YR 3/2), black (10YR 2/1), moist; gravelly clay loam; moderate medium subangular blocky parts to moderate fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; 3.0 very fine roots throughout and 1.0 medium roots throughout and 3.0 fine roots throughout; 20 percent by volume nonflat subangular indurated 2-25-75 millimeter limestone, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # 17N04349; dry when described; observed in trench
    Btss1—16 to 54 centimeters (6.3 to 21.3 inches); dark brown (7.5YR 3/2), dark brown (7.5YR 3/2), moist; clay; moderate coarse subangular blocky parts to moderate medium subangular blocky structure; hard, firm, very sticky, very plastic; 3.0 very fine roots throughout and 3.0 fine roots throughout; 3 reversible trans-horizon cracks per meter with a width of 0.5 cm that extend above the horizon; 25 percent slickensides (pedogenic) on bottom faces of peds and 30 percent distinct clay films on all faces of peds; 8 percent by volume nonflat subrounded indurated 2-10-75 millimeter limestone, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, 1n; clear wavy boundary. Lab sample # 17N04350; moist when described; observed in trench. continuous - phpvsfiid 1561879; continuous - phpvsfiid 1561879
    Btss2—54 to 92 centimeters (21.3 to 36.2 inches); dark grayish brown (10YR 4/2), dark grayish brown (10YR 4/2), moist; clay; moderate medium subangular blocky structure; hard, firm, very sticky, very plastic; 2.0 very fine roots throughout and 2.0 fine roots throughout; 3 reversible trans-horizon cracks per meter with a width of 0.5 cm that extend above and below the horizon; 20 percent distinct slickensides (pedogenic) on bottom faces of peds and 30 percent distinct pressure faces on bottom faces of peds; 10 percent by volume nonflat subangular indurated 2-10-75 millimeter limestone, unspecified fragments observed by visual inspection method; slight effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 17N04351; moist when described; observed in trench
    Btss3—92 to 109 centimeters (36.2 to 42.9 inches); 95 percent brown (10YR 4/3) and 5 percent brownish yellow (10YR 6/8), 95 percent brown (10YR 4/3) and 5 percent brownish yellow (10YR 6/8), moist; gravelly clay; moderate medium subangular blocky structure; hard, firm, very sticky, very plastic; 2.0 very fine roots throughout and 2.0 fine roots throughout; 3 reversible trans-horizon cracks per meter with a width of 0.3 cm that extend below the horizon; 15 percent distinct slickensides (pedogenic) on bottom faces of peds and 30 percent distinct pressure faces on bottom faces of peds; 20 percent by volume nonflat subangular indurated 2-15-75 millimeter limestone, unspecified fragments observed by visual inspection method; slight effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 17N04352; moist when described; observed in trench. continuous - phpvsfiid 1561883; continuous - phpvsfiid 1561884; continuous - phpvsfiid 1561883; continuous - phpvsfiid 1561884
    Bw—109 to 124 centimeters (42.9 to 48.8 inches); yellowish brown (10YR 5/4), yellowish brown (10YR 5/4), moist; gravelly clay; weak medium subangular blocky structure; moderately hard, friable, very sticky, very plastic; 1.0 very fine roots throughout and 1.0 fine roots throughout; 2 percent medium distinct spherical moderately coherent cemented iron-manganese concretions with clear boundaries throughout; 2 percent by volume nonflat subrounded indurated 75-100-250 millimeter limestone, unspecified fragments observed by visual inspection method and 15 percent by volume nonflat subangular indurated 2-20-75 millimeter limestone, unspecified fragments observed by visual inspection method; strong effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 17N04353; moist when described; observed in trench
    Cr—124 to 136 centimeters (48.8 to 53.5 inches); 70 percent strong brown (7.5YR 5/6) and 30 percent white (2.5Y 8/1), 70 percent strong brown (7.5YR 5/6) and 30 percent white (2.5Y 8/1), moist; bedrock; structureless massive; moderately coherent; fragments; strong effervescence, by hcl, 1n; abrupt wavy boundary.; observed in trench
    R—136 centimeters (53.5 inches); bedrock; structureless massive; strongly coherent; fragments; strong effervescence, by hcl, 1n.; observed in trench