IDENTIFIERS

Current Taxon Name (Soil Name): Aquic Hapludalfs

OSD

Series Extent

User Site ID: S11TX2897003

User Pedon ID: S11TX2897003

Vegetation Plot ID: S11TX2897003

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - TAMU

Lab Pedon # - S11TX2897003

NCSS Pedon Lab Data NASIS Record ID - 45617

Print Date: 2/2/2025

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: 31.4132385

Std. Longitude: -95.7312088

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, active, thermic Aquic Hapludalfs

Current Taxon Kind: family

Pedon Type: not classified to current taxon name

Pedon Purpose: research site

Correlated Information:

Soil Name - Aquic Hapludalfs

PSC - 44 to 94 cm.

Classificaton Date - 7/12/2013

Classifier - Chance M. Robinson

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - aquic

Sampled As Information:

Soil Name - Rader

Classificaton Date - 4/12/2011

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: alluvium

Landscape: river valley

Landform: stream terrace

Microfeature: mound

Geomorphic Component Terraces: tread

Slope Shape Across: linear

Slope Shape Down: convex

Drainage Class: somewhat 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

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			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap A E Bt1 Bt2 Bt3 Btk Btkg Btg1 Btg2 Btg3 BCtg Cg	0 16 29 44 63 96 125 144 175 198 220 238 251	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	0 0 0 0 0.1 0 0 0 0 0.1 0 0 0	0.1 0 0.1 0 0.1 0 0 0 0 0.1 0 0 0	0.9 0.6 0.6 0.7 1 0.4 0.5 0.4 0.9 0.9 0.2 0.2 0.3	36.3 38.2 46 42.8 33.3 28.5 34.8 35.9 32.3 32.3 29.6 24.7 52.6	23.4 25.6 30.5 27.7 22.3 19 18.4 17.2 19.6 19.6 37.8 39.6 37.5	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
Ap A E Bt1 Bt2 Bt3 Btk Btkg Btg1 Btg2 Btg3 BCtg Cg	0 16 29 44 63 96 125 144 175 198 220 238 251	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —		— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —

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	%
Ap A E Bt1 Bt2 Bt3 Btk Btkg Btg1 Btg2 Btg3 BCtg Cg	0 16 29 44 63 96 125 144 175 198 220 238 251	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	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 ec meter, 1:1 water	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —	— — — — — — — — — — — — —

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
2GA BRAR5 HOPU NALE3 OPUNT RUBUS SEPA10	— Bromus arvensis Hordeum pusillum Nassella leucotricha Opuntia Rubus Setaria parviflora	Grass, annual field brome little barley Texas wintergrass pricklypear blackberry marsh bristlegrass	— — — — — — —	— — — — — — —	— — — — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
abrupt textural change	—	44 -	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon redox concentrations redox depletions with chroma 2 or less argillic horizon redox concentrations aquic conditions abrupt textural change reduced matrix	0—44 16—29 44—144 44—251 44—251 44—275 44— 144—275	—- —- —- —- —- —- —- —-

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	59.9	—	207	1094	—	239	18.6	27.2	10.9	—	—	—	—	—	411596	Centerville, Texas	COOP A

Ap—0 to 16 centimeters (0.0 to 6.3 inches); very dark grayish brown (10YR 3/2) fine sandy loam; 61 percent sand; 21 percent silt; 18 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; friable; fragments; noneffervescent, by hcl, 1n; neutral, pH 6.7, pH meter; clear smooth boundary. Lab sample # TAMUE3861; dry when described; observed in push tube

A—16 to 29 centimeters (6.3 to 11.4 inches); dark grayish brown (10YR 4/2) fine sandy loam; 64 percent sand; 20 percent silt; 16 percent clay; moderate medium subangular blocky structure; friable; 1 percent fine distinct yellowish brown (10YR 5/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; neutral, pH 7.2, pH meter; abrupt smooth boundary. Lab sample # TAMUE3862; dry when described; observed in push tube

E—29 to 44 centimeters (11.4 to 17.3 inches); brown (10YR 5/3) loamy fine sand; 77 percent sand; 17 percent silt; 6 percent clay; weak medium subangular blocky structure; very friable; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4, pH meter; clear smooth boundary. Lab sample # TAMUE3863; dry when described; observed in push tube

Bt1—44 to 63 centimeters (17.3 to 24.8 inches); brown (10YR 5/3) fine sandy loam; 71 percent sand; 16 percent silt; 13 percent clay; weak medium subangular blocky structure; firm; distinct clay films on vertical faces of peds; 5 percent medium distinct grayish brown (10YR 5/2), moist, iron depletions throughout and 35 percent coarse distinct yellowish brown (10YR 5/6), moist, masses of oxidized iron throughout; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.6, pH meter; clear smooth boundary. Lab sample # TAMUE3864; moist when described; observed in push tube. continuous - phpvsfiid 725756; continuous - phpvsfiid 725756

Bt2—63 to 96 centimeters (24.8 to 37.8 inches); brown (10YR 5/3) sandy clay loam; 57 percent sand; 13 percent silt; 30 percent clay; moderate medium angular blocky structure; very firm; very fine roots between peds and fine roots between peds; distinct skeletans on vertical faces of peds and distinct dark grayish brown (10YR 4/2), moist, clay films on vertical faces of peds; 10 percent fine distinct grayish brown (10YR 5/2), moist, iron depletions in matrix and 15 percent medium distinct dark yellowish brown (10YR 4/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear smooth boundary. Lab sample # TAMUE3865; moist when described; observed in push tube. patchy - phpvsfiid 725757; continuous - phpvsfiid 725758; patchy - phpvsfiid 725757; continuous - phpvsfiid 725758

Bt3—96 to 125 centimeters (37.8 to 49.2 inches); brown (10YR 5/3) sandy clay; 48 percent sand; 13 percent silt; 40 percent clay; moderate medium angular blocky structure; very firm; very fine roots between peds and fine roots between peds; distinct brown (10YR 4/3), moist, clay films on vertical faces of peds and distinct skeletans on vertical faces of peds; 1 percent strong brown (7.5YR 5/6), moist, masses of oxidized iron and 25 percent fine distinct grayish brown (10YR 5/2), moist, iron depletions; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 7.9, pH meter; clear smooth boundary. Lab sample # TAMUE3866; moist when described; observed in push tube. continuous - phpvsfiid 725759; patchy - phpvsfiid 725760; continuous - phpvsfiid 725759; patchy - phpvsfiid 725760

Btk—125 to 144 centimeters (49.2 to 56.7 inches); light olive brown (2.5Y 5/6) sandy clay loam; 54 percent sand; 12 percent silt; 34 percent clay; moderate medium angular blocky structure; very firm; distinct grayish brown (10YR 5/2), moist, clay films on all faces of peds; 1 percent reddish brown (2.5YR 4/4), moist, masses of oxidized iron and 20 percent gray (10YR 6/1), moist, iron depletions; 1 percent coarse carbonate masses; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.1, pH meter; clear smooth boundary. Lab sample # TAMUE3867; moist when described; observed in push tube. patchy - phpvsfiid 725761; patchy - phpvsfiid 725761

Btkg—144 to 175 centimeters (56.7 to 68.9 inches); gray (2.5Y 6/1) sandy clay loam; 54 percent sand; 13 percent silt; 33 percent clay; moderate medium angular blocky structure; very firm; 0.1 fine roots; distinct light brownish gray (10YR 6/2), moist, clay films on all faces of peds; 5 percent medium yellowish red (5YR 5/6), moist, masses of oxidized iron and 35 percent brownish yellow (10YR 6/6), moist, masses of oxidized iron; 2 percent coarse moderately coherent cemented carbonate concretions; 3 percent by volume carbonate concretions fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; clear smooth boundary. Lab sample # TAMUE3868; moist when described; observed in push tube. patchy - phpvsfiid 725762; patchy - phpvsfiid 725762

Btg1—175 to 198 centimeters (68.9 to 78.0 inches); gray (2.5Y 6/1) sandy clay loam; 53 percent sand; 16 percent silt; 31 percent clay; moderate medium angular blocky structure; very firm; 0.1 fine roots; distinct gray (10YR 6/1), moist, clay films on vertical faces of peds; 1 percent yellowish red (5YR 5/6), moist, masses of oxidized iron and 8 percent moderately coherent cemented black (10YR 2/1), moist, iron-manganese concretions and 40 percent brownish yellow (10YR 6/6), moist, masses of oxidized iron; 1 percent by volume carbonate concretions fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear smooth boundary. Lab sample # TAMUE3869; moist when described; observed in push tube. continuous - phpvsfiid 725763; continuous - phpvsfiid 725763

Btg2—198 to 220 centimeters (78.0 to 86.6 inches); light brownish gray (2.5Y 6/2) sandy clay loam; 66 percent sand; 13 percent silt; 22 percent clay; moderate medium subangular blocky structure; firm; distinct light brownish gray (10YR 6/2), moist, clay films on vertical faces of peds; 10 percent strong brown (7.5YR 5/6), moist, masses of oxidized iron and 40 percent brownish yellow (10YR 6/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.1, pH meter; clear smooth boundary. Lab sample # TAMUE3870; moist when described; observed in push tube. continuous - phpvsfiid 725764; continuous - phpvsfiid 725764

Btg3—220 to 238 centimeters (86.6 to 93.7 inches); gray (2.5Y 6/1) very fine sandy loam; 68 percent sand; 13 percent silt; 19 percent clay; moderate medium subangular blocky structure; friable; distinct light brownish gray (10YR 6/2), moist, clay films on vertical faces of peds; 5 percent brownish yellow (10YR 6/8), moist, masses of oxidized iron and 45 percent olive yellow (2.5Y 6/6), moist, masses of oxidized iron; 1 percent fine threadlike carbonate masses; fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; gradual smooth boundary. Lab sample # TAMUE3871; moist when described; observed in push tube. patchy - phpvsfiid 725765; patchy - phpvsfiid 725765

BCtg—238 to 251 centimeters (93.7 to 98.8 inches); gray (2.5Y 6/1) very fine sandy loam; 65 percent sand; 17 percent silt; 18 percent clay; moderate medium subangular blocky structure; friable; distinct clay films on vertical faces of peds; 1 percent olive yellow (2.5Y 6/6), moist, masses of oxidized iron; fragments; noneffervescent, by hcl, 1n; slightly alkaline, pH 7.4, pH meter; gradual smooth boundary. Lab sample # TAMUE3872; moist when described; observed in push tube. patchy - phpvsfiid 725766; patchy - phpvsfiid 725766

Cg—251 to 275 centimeters (98.8 to 108.3 inches); light brownish gray (2.5Y 6/2) stratified stratified fine sand; 90 percent sand; 5 percent silt; 5 percent clay; structureless single grain; loose; fragments; noneffervescent, by hcl, 1n; neutral, pH 7.1, pH meter. Lab sample # TAMUE3873; moist when described; observed in push tube