IDENTIFIERS

Current Taxon Name (Soil Name): BONHAM

OSD

Series Extent

User Site ID: S1962TX147002

User Pedon ID: S1962TX147002

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 40A4506

NCSS Pedon Lab Data NASIS Record ID - 40658

Print Date: 4/3/2025

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: 33.4500008

Std. Longitude: -96.3499985

Datum: WGS84

Location Description: Sam Raeburn farm about 1 mile west of Bonham on US Highway 82 in an alfalfa field east of farm buildings.

State: Texas

County: TX147—Fannin

MLRA: 133B—Western Coastal Plain

Non-MLRA Soil Survey Area: TX147—Fannin County, Texas

PEDON

Describers Name: M. Stout and H. Oakes

Current Taxonomic Class: Fine, montmorillonitic, thermic Aquic Argiudolls

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Pedon #: 2

Correlated Information:

Soil Name - BONHAM

PSC - 46 to 96 cm.

Classificaton Date - 1/27/2010

Moisture Class - udic

Sampled As Information:

Soil Name - Bonham

Classificaton Date - 9/10/1962

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landform: alluvial fan

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 9/10/1962 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - hayland

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

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
1	—	—	—	—		—	—	—	—	—	—	—	—	—	—	—	—	—	—

AP—0 to 25 centimeters (0.0 to 9.8 inches); very dark gray (10YR 3/1) and black (10YR 2/1) silt loam; weak fine and medium granular structure; hard when dry, friable, slightly sticky, nonplastic; 21.0 roots; 3 percent worm casts; fragments; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 40A34445

B1—25 to 46 centimeters (9.8 to 18.1 inches); very dark grayish brown (10YR 3/2) and very dark brown (10YR 2/2) silty clay loam; 3 percent light brownish gray (10YR 6/2) fine faint mottles; moderate fine and medium subangular blocky structure; very hard, firm; 3.0 fine pores; 30 percent very dark grayish brown (10YR 3/2), moist, coats; fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 40A34446

B21T—46 to 81 centimeters (18.1 to 31.9 inches); dark gray (10YR 4/1) and very dark gray (10YR 3/1) silty clay loam; 3 percent reddish brown (5YR 5/3) medium distinct and 3 percent gray (10YR 6/1) medium distinct mottles; moderate fine and medium subangular blocky structure; extremely hard, very firm; 3.0 fine pores; distinct clay films and 30 percent between sand grains; fragments; strongly acid, pH 5.5, hellige-truog; gradual smooth boundary. Lab sample # 40A34447. continuous - phpvsfiid 198108; continuous - phpvsfiid 198108

B22T—81 to 112 centimeters (31.9 to 44.1 inches); gray (2.5Y 6/1) and gray (2.5Y 5/1) silty clay loam; moderate fine and medium subangular blocky structure; extremely hard, very firm; 3.0 very fine pores; distinct clay films; fragments; strongly acid, pH 5.5, hellige-truog; diffuse boundary. Lab sample # 40A34448. continuous - phpvsfiid 198110; continuous - phpvsfiid 198110

B23T—112 to 150 centimeters (44.1 to 59.1 inches); gray (2.5Y 6/1) and gray (2.5Y 5/1) silty clay loam; 3 percent light yellowish brown (2.5Y 6/3) medium distinct and 3 percent pale yellow (2.5Y 8/3) medium distinct mottles; strong medium subangular blocky structure; extremely hard, very firm; distinct clay films; 1 percent medium iron-manganese concretions; fragments; strongly acid, pH 5.5, hellige-truog; clear boundary. Lab sample # 40A34449. continuous - phpvsfiid 198111; continuous - phpvsfiid 198111

B24T—150 to 201 centimeters (59.1 to 79.1 inches); light gray (2.5Y 7/2) and light brownish gray (2.5Y 6/2) silty clay loam; 3 percent yellow (2.5Y 8/6) medium and 3 percent light yellowish brown (2.5Y 6/3) medium mottles; moderate medium and coarse subangular blocky structure; 21 percent medium noncoherent cemented black (10YR 2/1) iron-manganese concretions; fragments; diffuse boundary. Lab sample # 40A34450

C1—201 to 251 centimeters (79.1 to 98.8 inches); light gray (2.5Y 7/2) and light brownish gray (2.5Y 6/2) silty clay loam; moderate medium and coarse subangular blocky structure; 21 percent iron-manganese concretions; fragments. Lab sample # 40A34451. Split for sampling purposes.

C2—251 to 284 centimeters (98.8 to 111.8 inches); light gray (2.5Y 7/2) and light brownish gray (2.5Y 6/2) silty clay loam; moderate medium and coarse subangular blocky structure; fragments. Lab sample # 40A34452. The 56 to 112 inch depth considered as same horizon in respect to color and texture - split into 3 horizons for sampling purposes.

C3CA—284 to 323 centimeters (111.8 to 127.2 inches); light gray (2.5Y 7/2) and light brownish gray (2.5Y 6/2) silty clay loam; moderate medium and coarse subangular blocky structure; 1 percent noncoherent cemented iron-manganese concretions; weakly coherent cemented carbonate concretions; fragments. Lab sample # 40A34453

C4—323 to 368 centimeters (127.2 to 144.9 inches); yellow (10YR 8/6) and light gray (10YR 7/1) clay loam; moderate medium and coarse subangular blocky structure; 1 percent iron-manganese concretions; fragments. Lab sample # 40A34454

C5—368 to 444 centimeters (144.9 to 174.8 inches); yellow (10YR 8/6) and light gray (10YR 7/1) silty clay loam; moderate medium and coarse subangular blocky structure; fragments. Lab sample # 40A34455. Augered.