Tarrant County, Texas

Survey Area TX439• Texas

The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high 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 Tarrant 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
Sanger clay, 1 to 3 percent slopes	32K	Well drained	D	Very limited	Very limited
Sanger-Urban land complex, 1 to 5 percent slopes	25K	Well drained	D	Very limited	Very limited
Water	23K		D	Not rated	Not rated
Aledo gravelly clay loam, 1 to 8 percent slopes	22K	Well drained	D	Very limited	Very limited
Bolar-Aledo complex, 3 to 20 percent slopes	21K	Well drained	D	Very limited	Very limited
Urban land, 0 to 16 percent slopes	18K	Well drained	D	Not rated	Not rated
Slidell clay, 1 to 3 percent slopes	18K	Moderately well drained	D	Very limited	Very limited
Crosstell-Urban land complex, 1 to 5 percent slopes	17K	Moderately well drained	D	Very limited	Very limited
Purves clay, 1 to 3 percent slopes	17K	Well drained	D	Very limited	Very limited
Crosstell fine sandy loam, 3 to 8 percent slopes	15K	Moderately well drained	D	Very limited	Very limited
Aledo-Bolar-Urban land complex, 3 to 20 percent slopes	14K	Well drained	D	Very limited	Very limited
Rader fine sandy loam, 0 to 3 percent slopes	14K	Moderately well drained	C	Somewhat limited	Very limited
Gasil-Urban land complex, 1 to 8 percent slopes	13K	Well drained	B	Not limited	Somewhat limited
Sanger clay, 3 to 5 percent slopes	13K	Well drained	D	Very limited	Very limited
Gasil fine sandy loam, 1 to 3 percent slopes	11K	Well drained	B	Not limited	Somewhat limited
Frio silty clay, 0 to 1 percent slopes, occasionally flooded	11K	Well drained	C	Very limited	Very limited
Houston Black-Urban land complex, 1 to 4 percent slopes	11K	Moderately well drained	D	Very limited	Very limited
Heiden clay, 1 to 3 percent slopes	11K	Well drained	D	Very limited	Very limited
Crosstell fine sandy loam, 1 to 3 percent slopes	11K	Moderately well drained	D	Very limited	Very limited
Ponder clay loam, 1 to 3 percent slopes	10K	Moderately 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.

Vertisols

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

Entisols

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

What This Means

Building & Foundations

About 75% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 79% 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.