Hardeman County, Texas

Survey Area TX197• Texas

The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Hardeman County, Texas. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map Unit	Acres	Drainage	Hydro Group	Dwellings	Septic
Tillman clay loam, 1 to 3 percent slopes	57K	Well drained	C	Very limited	Very limited
Cottonwood-Knoco complex, 3 to 20 percent slopes	32K	Well drained	D	Very limited	Very limited
Hollister clay loam, 0 to 1 percent slopes	26K	Well drained	C	Very limited	Very limited
Devol loamy sand, 0 to 3 percent slopes	26K	Well drained	A	Not limited	Very limited
Knoco-Badland complex, dry, 1 to 12 percent slopes	22K	Well drained	D	Very limited	Very limited
Miles loamy fine sand, moist, 0 to 3 percent slopes	20K	Well drained	B	Somewhat limited	Very limited
Quanah-Talpa complex, 1 to 8 percent slopes	19K	Well drained	B	Somewhat limited	Somewhat limited
Vernon clay loam, dry, 1 to 3 percent slopes	18K	Well drained	D	Somewhat limited	Very limited
Sagerton clay loam, moist, 1 to 3 percent slopes	14K	Well drained	C	Somewhat limited	Very limited
Grandfield fine sandy loam, 1 to 3 percent slopes	14K	Well drained	B	Not limited	Very limited
Weymouth clay loam, 1 to 3 percent slopes	13K	Well drained	C	Somewhat limited	Very limited
Badland	13K	Well drained	D	Very limited	Very limited
Hollister clay loam, 1 to 3 percent slopes	12K	Well drained	C	Very limited	Very limited
Colorado and Spur soils, 0 to 1 percent slopes, frequently flooded	11K	Well drained	B	Very limited	Very limited
Tivoli fine sand, 5 to 30 percent slopes	11K	Excessively drained	A	Very limited	Very limited
Rotan clay loam, 0 to 1 percent slopes	11K	Well drained	C	Somewhat limited	Very limited
Sagerton clay loam, moist, 0 to 1 percent slopes	10K	Well drained	C	Somewhat limited	Very limited
Devol loamy sand, 3 to 8 percent slopes	9K	Well drained	A	Not limited	Very limited
Quanah silty clay loam, 1 to 3 percent slopes	8K	Well drained	B	Somewhat limited	Somewhat limited
Tillman clay loam, 0 to 1 percent slopes	6K	Well drained	C	Very limited	Very limited

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Mollisols

Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.

Alfisols

Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

Inceptisols

Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

Vertisols

High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.

What This Means

Building & Foundations

About 53% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 92% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.