IDENTIFIERS

Current Taxon Name (Soil Name): Levac

OSD

Series Extent

User Site ID: S2010TX0714802

User Pedon ID: S10TX0714802

Vegetation Plot ID: S2010TX0714802

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 11N0449

NCSS Pedon Lab Data NASIS Record ID - 58668

Print Date: 11/27/2024

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: 29.6996117

Std. Longitude: -94.5920258

Datum: WGS84

PEDON

Describers Name: Jon Wiedenfeld

Current Taxonomic Class: Fine, smectitic, hyperthermic Oxyaquic Vertic Hapludalfs

Current Taxon Kind: series

Pedon Type: classifies to current taxon name, full description

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Correlated Information:

Soil Name - Levac

Classificaton Date - 6/23/2011

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - oxyaquic

Sampled As Information:

Soil Name - Levac

Classificaton Date - 12/3/2010

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 1

QA Status: level 1

SITE

Parent Material: loamy fluviomarine deposits

Landscape: relic meander belt on flat coastal plain

Anthropogenic Feature: leveled land

Geomorphic Component Flats: talf

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: low

Drainage Class: moderately well

Flooding: none flooding

Ponding: none ponding

Geology: Beaumont formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 12/3/2010 (actual site observation date)

Surface Water Kind: none observed

Hydrology Status: drier than natural

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - rangeland, grassland

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			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap A2 A3 Bt Btkss1 Btkss2 Btkss3 Btkssg Btg	0 17 30 48 72 112 154 117 9999	17 30 48 72 112 154 177 203 9999	— — — — — — — — —	— — — — — — — — —	25.3 24.3 26.5 38.9 40 41.7 43.4 39.8 —	— — — — — — — — —	23.7 21.6 21.7 19.2 22.4 20.7 21 15.2 —	15.7 13.2 12.8 11.8 15 13.9 13.8 10.7 —	8 8.4 8.9 7.4 7.4 6.8 7.2 4.5 —	51 54.1 51.8 41.9 37.6 37.6 35.6 45 —	— — — — — — — — —	0 0.1 0.1 0 0.1 0 0 0.1 —	0.1 0 0.1 0 0.1 0 0 0.1 —	0.6 0.4 0.1 0.1 0.3 0.1 0.3 0.2 —	34.9 35.2 37.3 30.8 23.1 23 24.7 34.4 —	15.4 18.4 14.2 11 14 14.5 10.6 10.2 —	— — — — — — — — —	scl scl scl cl c c c cl —	— — — — — — — — —	— — — — — — — — —	6.3 7 7.5 7.8 8 7.6 7.9 7.4 —

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 A2 A3 Bt Btkss1 Btkss2 Btkss3 Btkssg Btg	0 17 30 48 72 112 154 117 9999	17 30 48 72 112 154 177 203 9999	— — — — — — — — —	5.8 6.3 7 7.5 7.7 7.3 7.7 7 —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —		— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

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 A2 A3 Bt Btkss1 Btkss2 Btkss3 Btkssg Btg	0 17 30 48 72 112 154 117 9999	17 30 48 72 112 154 177 203 9999	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — 0.3 0.3 — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — 2 — 1 — —	— — — — — — — — —	1 1 1 1 1 1 1 1 —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
AMBRO ANGL2 SCSC SENNA SETAR	Ambrosia Andropogon glomeratus Schizachyrium scoparium Senna Setaria	ragweed bushy bluestem little bluestem senna bristlegrass	— — — — —	— — — — —	— — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon redox depletions with chroma 2 or less slickensides secondary carbonates endosaturation	0—17 17—203 48—72 72—203 112—203 203—215	—- —- —- —- —- —-

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	—	—	—	—	130	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 17 centimeters (0.0 to 6.7 inches); 50 percent dark gray (10YR 4/1) broken face and 45 percent very dark gray (10YR 3/1) broken face, 45 percent very dark gray (10YR 3/1) broken face and 50 percent dark gray (10YR 4/1) broken face, dry; sandy clay loam; structureless massive; very hard, friable; 8.0 very fine roots; 3.0 very fine interstitial pores; 5 reversible trans-horizon cracks per meter at a depth of 2.5 cm with a width of 5 cm that extend above the horizon; 1 percent fine distinct dark yellowish brown (10YR 4/4) masses of oxidized iron with sharp boundaries lining pores and 1 percent fine faint grayish brown (10YR 5/2) iron depletions with clear boundaries in matrix surrounding redox concentrations; fragments; noneffervescent; slightly acid, pH 6.3; clear smooth boundary.; observed in pit, small. few masses 5 to 20 mm in size of argillic horizon mixed in throughout

A2—17 to 30 centimeters (6.7 to 11.8 inches); very dark gray (10YR 3/1) broken face sandy clay loam; weak medium prismatic parts to moderate medium subangular blocky structure; very hard, friable; 8.0 very fine roots; 8.0 very fine interstitial and tubular and 2.0 fine interstitial and tubular pores; 5 reversible trans-horizon cracks per meter at a depth of 2.5 cm with a width of 5 cm that extend above the horizon; 15 percent distinct black (10YR 2/1) clay films on all faces of peds; 1 percent fine faint dark grayish brown (10YR 4/2) iron depletions with clear boundaries in matrix surrounding redox concentrations and 1 percent fine distinct dark yellowish brown (10YR 4/4) masses of oxidized iron with sharp boundaries lining pores; fragments; noneffervescent; neutral, pH 7.0; clear smooth boundary.; observed in pit, small

A3—30 to 48 centimeters (11.8 to 18.9 inches); gray (10YR 5/1) sandy clay loam; moderate medium prismatic parts to moderate medium angular blocky structure; firm; 3.0 very fine roots; 2.0 very fine irregular pores; 5 reversible trans-horizon cracks per meter at a depth of 0.5 cm with a width of 2.5 cm that extend above and below the horizon; 10 percent distinct very dark gray (10YR 3/1) clay films on all faces of peds; 1 percent fine faint gray (10YR 6/1) iron depletions with sharp boundaries in matrix surrounding redox concentrations and 1 percent fine distinct brownish yellow (10YR 6/6) masses of oxidized iron with clear boundaries in matrix and 1 percent fine prominent reddish yellow (7.5YR 6/8) masses of oxidized iron with sharp boundaries lining pores and 2 percent fine distinct light yellowish brown (2.5Y 6/4) masses of oxidized iron with sharp boundaries in matrix; fragments; noneffervescent; slightly alkaline, pH 7.5; gradual smooth boundary.; observed in pit, small

Bt—48 to 72 centimeters (18.9 to 28.3 inches); gray (2.5Y 6/1) clay loam; moderate medium and coarse prismatic structure; very firm; 2.0 very fine roots; 2.0 very fine tubular pores; 5 reversible trans-horizon cracks per meter at a depth of 0.5 cm with a width of 2.5 cm that extend above and below the horizon; 8 percent faint gray (10YR 5/1) clay films on all faces of peds and 10 percent distinct pressure faces; 1 percent fine prominent strong brown (7.5YR 5/8) masses of oxidized iron with sharp boundaries lining pores and 2 percent fine faint light gray (2.5Y 7/1) iron depletions with clear boundaries in matrix surrounding redox depletions and 5 percent medium prominent brownish yellow (10YR 6/8) masses of oxidized iron with sharp boundaries in matrix surrounding redox concentrations; 1 percent fine spherical carbonate nodules; fragments; noneffervescent; slightly alkaline, pH 7.8; gradual wavy boundary.; observed in pit, small

Btkss1—72 to 112 centimeters (28.3 to 44.1 inches); light gray (2.5Y 7/2) clay; moderate coarse wedge parts to moderate coarse angular blocky structure; very firm; 2.0 very fine roots; 2.0 very fine tubular pores; 2 percent faint light gray (2.5Y 7/2) clay films on all faces of peds and 25 percent distinct light gray (2.5Y 7/1) slickensides (pedogenic); 1 percent fine faint light greenish gray (5G 7/1) iron depletions with clear boundaries lining pores and 5 percent medium and coarse distinct olive yellow (2.5Y 6/6) masses of oxidized iron with sharp boundaries in matrix and 20 percent medium and coarse distinct yellow (2.5Y 7/6) masses of oxidized iron with clear boundaries in matrix surrounding redox concentrations; 1 percent fine spherical white (2.5Y 8/1) carbonate nodules in matrix surrounding redox concentrations and 2 percent medium and coarse spherical white (2.5Y 8/1) carbonate nodules in matrix surrounding redox concentrations; fragments; noneffervescent; moderately alkaline, pH 8.0; gradual wavy boundary.; observed in pit, small. carbonate nodules are coated with iron concentrations and are slightly disentegrated

Btkss2—112 to 154 centimeters (44.1 to 60.6 inches); light gray (2.5Y 7/2) clay; moderate coarse wedge parts to moderate coarse angular blocky structure; very firm; 2.0 very fine roots; 3.0 very fine tubular and 1.0 fine tubular pores; 20 percent distinct light gray (2.5Y 7/1) slickensides (pedogenic); 1 percent fine faint light greenish gray (5G 8/1) iron depletions with diffuse boundaries lining pores and 1 percent fine faint greenish gray (5G 6/1) iron depletions with diffuse boundaries lining pores and 10 percent medium prominent yellow (10YR 7/8) masses of oxidized iron with clear boundaries in matrix surrounding redox concentrations and 15 percent medium and coarse prominent brownish yellow (10YR 6/8) masses of oxidized iron with sharp boundaries in matrix; 3 percent coarse spherical weakly coherent cemented very pale brown (10YR 8/2) carbonate nodules in matrix surrounding redox concentrations and 5 percent coarse spherical very weakly coherent cemented white (10YR 8/1) carbonate masses in matrix surrounding redox concentrations; fragments; noneffervescent; slightly alkaline, pH 7.6; gradual wavy boundary.; observed in pit, small. carbonate nodules are hard pitted and partially disintegrated on the outer edge; 5 percent by volume crawfish krotovinas that are filled with dark gray (10YR 4/1) silty clay loam

Btkss3—154 to 177 centimeters (60.6 to 69.7 inches); light gray (2.5Y 7/1) clay; moderate coarse wedge parts to moderate very coarse angular blocky structure; very firm; 2.0 very fine roots; 3.0 very fine tubular and 1.0 fine tubular pores; 15 percent prominent light gray (2.5Y 7/1) slickensides (pedogenic); 1 percent fine faint greenish gray (5G 6/1) iron depletions with diffuse boundaries lining pores and 10 percent coarse prominent yellowish brown (10YR 5/8) masses of oxidized iron with sharp boundaries in matrix and 30 percent coarse prominent brownish yellow (10YR 6/8) masses of oxidized iron with clear boundaries in matrix surrounding redox concentrations; 8 percent coarse spherical very pale brown (10YR 8/2) carbonate nodules and 3 percent coarse spherical pale yellow (2.5Y 8/2) carbonate masses; fragments; noneffervescent; moderately alkaline, pH 7.9; gradual smooth boundary.; observed in pit, small. 5 percent by volume crawfish krotovinas filled with dark gray (10YR 4/1) silty clay loam; carbonate nodules are hard-pitted with redox concentrations coating the outside edge

Btkssg—177 to 203 centimeters (69.7 to 79.9 inches); light gray (5Y 7/1) clay loam; weak very coarse wedge parts to moderate very coarse angular blocky structure; firm; 1.0 very fine roots; 2.0 very fine tubular and 1.0 fine tubular pores; 5 percent distinct light gray (5Y 7/1) slickensides (pedogenic); 1 percent fine faint light greenish gray (5GY 7/1) iron depletions with diffuse boundaries lining pores and 2 percent medium prominent black (10YR 2/1) iron-manganese masses with sharp boundaries in matrix and 5 percent coarse prominent yellowish brown (10YR 5/8) masses of oxidized iron with sharp boundaries in matrix and 25 percent coarse prominent brownish yellow (10YR 6/8) masses of oxidized iron with clear boundaries in matrix surrounding redox concentrations; 2 percent medium and coarse spherical white (10YR 8/1) carbonate nodules; fragments; noneffervescent; slightly alkaline, pH 7.4; clear smooth boundary.; observed in pit, small. 3 percent by volume crawfish krotovinas filled with dark gray (10YR 4/1) silty clay loam; carbonate nodules are hard-pitted with redox concentrations coating the outside edge

Btg—203 to 215 centimeters (79.9 to 84.6 inches); greenish gray (5BG 6/1) sandy clay loam; friable; fragments; noneffervescent.; observed in pit, small