IDENTIFIERS

Current Taxon Name (Soil Name): Typic Endoaqualfs

OSD

Series Extent

User Site ID: S11TX2897004

User Pedon ID: S11TX2897004

Vegetation Plot ID: S11TX2897004

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - TAMU

Lab Pedon # - S11TX2897004

NCSS Pedon Lab Data NASIS Record ID - 45618

Print Date: 4/23/2025

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: 31.4131508

Std. Longitude: -95.7312698

Datum: WGS84

State: Texas

County: TX289—Leon

MLRA: 87A—Texas Claypan Area, Southern Part

Non-MLRA Soil Survey Area: TX289—Leon County, Texas

7.5 Minute USGS Quad: 31095-D6—Stanmire Lake, Texas

PEDON

Describers Name: C.T. Hallmark and Chance Robinson

Current Taxonomic Class: Fine-loamy, siliceous, superactive, thermic Typic Endoaqualfs

Current Taxon Kind: family

Pedon Type: not classified to current taxon name

Pedon Purpose: research site

Correlated Information:

Soil Name - Typic Endoaqualfs

PSC - 39 to 89 cm.

Classificaton Date - 7/12/2013

Classifier - Chance M. Robinson

Soil Taxonomic Edition - eleventh edition

Moisture Class - aquic

Moisture Subclass - typic

Sampled As Information:

Soil Name - Derly

Classificaton Date - 4/12/2011

Dynamic Soil Properties:

Erosion Class - 0

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: alluvium

Landscape: river valley

Landform: stream terrace

Microfeature: swale

Geomorphic Component Terraces: tread

Slope Shape Across: linear

Slope Shape Down: convex

Drainage Class: poorly

Geology: Qal formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 4/12/2011 (actual site observation date)

Surface Water Kind: none observed

Microrelief Kind: microlow

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - pastureland, tame

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Current Weather - sunny

Current Air Temp - 30

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 Ap BAg Btg1 Btg2 Btg3 Btg4 Btg5 Btg6 Btg7 Btg8 BCg Cg	0 5 23 39 60 74 98 125 146 173 194 218 262	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	0 0 0.1 0 0 0 0 0 0 0.1 0.1 0 0	0.2 0 0.1 0 0 0 0 0 0.1 0.1 0.1 0 0	2.5 1 0.4 0.4 0.3 0.4 0.2 0.2 0.3 0.3 0.2 0.2 0.1	27.7 32.3 26.4 25.9 29.7 28.7 30.4 29.7 21.2 26.6 26.3 40.5 56.2	18.9 23 20.1 18.9 19.8 19.3 18.5 22.4 19.6 27.2 36.4 36.2 34.1	300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve 300 mesh sieve	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —

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 Ap BAg Btg1 Btg2 Btg3 Btg4 Btg5 Btg6 Btg7 Btg8 BCg Cg	0 5 23 39 60 74 98 125 146 173 194 218 262	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —		— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —

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 Ap BAg Btg1 Btg2 Btg3 Btg4 Btg5 Btg6 Btg7 Btg8 BCg Cg	0 5 23 39 60 74 98 125 146 173 194 218 262	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water ec meter, 1:1 water —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
CAREX SEPA10	Carex Setaria parviflora	sedge marsh bristlegrass	— —	— —	— —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon redox concentrations aquic conditions reduced matrix argillic horizon redox depletions with chroma 2 or less redox depletions with chroma 2 or less redox depletions with chroma 2 or less	0—39 0—262 23—296 23—296 39—218 60—125 146—173 194—218	—- —- —- —- —- —- —- —-

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
0.1	450	210	59.5	—	207	1094	—	239	18.6	27.2	10.9	—	—	—	—	—	411596	Centerville, Texas	COOP A

A—0 to 5 centimeters (0.0 to 2.0 inches); dark grayish brown (10YR 4/2) loam; 49 percent sand; 31 percent silt; 19 percent clay; weak medium granular, and weak fine granular, and weak fine subangular blocky structure; friable; 5.0 medium roots throughout and 5.0 fine roots throughout; 2 percent very fine brownish yellow (10YR 6/6), moist, masses of oxidized iron; 1 percent by volume wood fragments; noneffervescent, by hcl, 1n; strongly acid, pH 5.3, pH meter; clear smooth boundary. Lab sample # TAMUE3874; dry when described; observed in push tube

Ap—5 to 23 centimeters (2.0 to 9.1 inches); dark grayish brown (10YR 4/2) sandy clay loam; 56 percent sand; 24 percent silt; 20 percent clay; moderate medium subangular blocky structure; friable; 5.0 medium roots throughout and 5.0 fine roots throughout; 1 percent noncoherent cemented black (10YR 2/1), moist, iron-manganese masses and 15 percent fine distinct strong brown (7.5YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately acid, pH 5.6, pH meter; clear smooth boundary. Lab sample # TAMUE3875; dry when described; observed in push tube

BAg—23 to 39 centimeters (9.1 to 15.4 inches); dark grayish brown (10YR 4/2) sandy clay loam; 47 percent sand; 23 percent silt; 30 percent clay; moderate medium subangular blocky structure; firm; 2.0 medium roots throughout and 2.0 fine roots throughout; 1 percent black (10YR 2/1), moist, iron-manganese masses and 25 percent dark yellowish brown (10YR 4/4), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately acid, pH 6.0, pH meter; gradual smooth boundary. Lab sample # TAMUE3876; dry when described; observed in push tube

Btg1—39 to 60 centimeters (15.4 to 23.6 inches); dark grayish brown (10YR 4/2) sandy clay loam; 45 percent sand; 20 percent silt; 35 percent clay; moderate medium subangular blocky structure; firm; 2.0 medium roots throughout and 2.0 fine roots throughout; distinct clay films on vertical faces of peds; 20 percent fine distinct dark yellowish brown (10YR 4/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately acid, pH 5.9, pH meter; gradual smooth boundary. Lab sample # TAMUE3877; moist when described; observed in push tube. patchy - phpvsfiid 725767; patchy - phpvsfiid 725767

Btg2—60 to 74 centimeters (23.6 to 29.1 inches); dark grayish brown (10YR 4/2) sandy clay loam; 50 percent sand; 20 percent silt; 30 percent clay; moderate medium angular blocky structure; very firm; 2.0 medium roots throughout and 2.0 fine roots throughout; distinct clay films on vertical faces of peds; 1 percent fine light olive brown (2.5Y 5/4), moist, iron-manganese concretions and 1 percent light brownish gray (10YR 6/2), moist, iron depletions and 1 percent fine black (10YR 2/1), moist, iron-manganese masses and 15 percent yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.2, pH meter; gradual smooth boundary. Lab sample # TAMUE3878; moist when described; observed in push tube. patchy - phpvsfiid 725768; patchy - phpvsfiid 725768

Btg3—74 to 98 centimeters (29.1 to 38.6 inches); dark grayish brown (2.5Y 4/2) sandy clay loam; 48 percent sand; 20 percent silt; 32 percent clay; moderate medium angular blocky structure; very firm; 1.0 medium roots and 2.0 fine roots; distinct dark grayish brown (2.5Y 4/2), moist, clay films on vertical faces of peds; 1 percent fine black (10YR 2/1), moist, iron-manganese masses and 5 percent fine distinct gray (10YR 6/1), moist, masses of oxidized iron and 5 percent light olive brown (2.5Y 5/4), moist, iron depletions; fragments; noneffervescent, by hcl, 1n; neutral, pH 6.7, pH meter; gradual smooth boundary. Lab sample # TAMUE3879; moist when described; observed in push tube. continuous - phpvsfiid 725769; continuous - phpvsfiid 725769

Btg4—98 to 125 centimeters (38.6 to 49.2 inches); grayish brown (2.5Y 5/2) sandy clay loam; 49 percent sand; 18 percent silt; 33 percent clay; moderate medium angular blocky structure; very firm; 1.0 medium roots and 2.0 fine roots; distinct dark grayish brown (2.5Y 4/2), moist, clay films on all faces of peds; 1 percent fine black (10YR 2/1), moist, iron-manganese masses and 2 percent light brownish gray (2.5Y 6/2), moist, iron depletions and 15 percent medium light olive brown (2.5Y 5/4), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.5, pH meter; gradual smooth boundary. Lab sample # TAMUE3880; moist when described; observed in push tube. continuous - phpvsfiid 725770; continuous - phpvsfiid 725770

Btg5—125 to 146 centimeters (49.2 to 57.5 inches); light brownish gray (2.5Y 6/2) sandy clay loam; 52 percent sand; 17 percent silt; 31 percent clay; moderate medium subangular blocky structure; firm; 1.0 medium roots and 2.0 fine roots; distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds; 1 percent fine black (10YR 2/1), moist, iron-manganese concretions and 5 percent red (2.5YR 5/8), moist, masses of oxidized iron and 30 percent light olive brown (2.5Y 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.7, pH meter; gradual smooth boundary. Lab sample # TAMUE3881; moist when described; observed in push tube. patchy - phpvsfiid 725771; patchy - phpvsfiid 725771

Btg6—146 to 173 centimeters (57.5 to 68.1 inches); light brownish gray (10YR 6/2) clay loam; 41 percent sand; 21 percent silt; 38 percent clay; moderate medium angular blocky structure; very firm; 0.5 medium roots and 1.0 fine roots; distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds; 5 percent medium gray (10YR 6/1), moist, iron depletions and 25 percent medium distinct yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.6, pH meter; gradual smooth boundary. Lab sample # TAMUE3882; moist when described; observed in push tube. patchy - phpvsfiid 725772; patchy - phpvsfiid 725772

Btg7—173 to 194 centimeters (68.1 to 76.4 inches); gray (10YR 6/1) sandy clay loam; 54 percent sand; 18 percent silt; 28 percent clay; moderate medium subangular blocky structure; firm; 0.5 medium roots and 1.0 fine roots; distinct gray (10YR 5/1), moist, clay films on vertical faces of peds; 40 percent medium brownish yellow (10YR 6/6), moist, masses of oxidized iron throughout; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 7.9, pH meter; gradual smooth boundary. Lab sample # TAMUE3883; moist when described; observed in push tube. patchy - phpvsfiid 725773; patchy - phpvsfiid 725773

Btg8—194 to 218 centimeters (76.4 to 85.8 inches); light brownish gray (2.5Y 6/2) sandy clay loam; 63 percent sand; 14 percent silt; 23 percent clay; moderate medium subangular blocky structure; firm; distinct grayish brown (10YR 5/2), moist, clay films on vertical faces of peds; 20 percent light brownish gray (10YR 6/2), moist, masses of oxidized iron and 20 percent light gray (10YR 7/1), moist, iron depletions; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.1, pH meter; gradual smooth boundary. Lab sample # TAMUE3884; moist when described; observed in push tube. patchy - phpvsfiid 725774; patchy - phpvsfiid 725774

BCg—218 to 262 centimeters (85.8 to 103.1 inches); light brownish gray (2.5Y 6/2) very fine sandy loam; 77 percent sand; 9 percent silt; 14 percent clay; weak medium subangular blocky structure; firm; 0.5 coarse roots; 20 percent medium distinct brownish yellow (10YR 6/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; clear smooth boundary. Lab sample # TAMUE3885; moist when described; observed in push tube

Cg—262 to 296 centimeters (103.1 to 116.5 inches); light gray (10YR 7/1) stratified stratified fine sand; 90 percent sand; 5 percent silt; 4 percent clay; structureless single grain; loose; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.2, pH meter. Lab sample # TAMUE3886; moist when described; observed in push tube