Hamilton County, Texas

Survey Area TX193• 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 Hamilton 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
Doss-Real complex, 1 to 8 percent slopes	63K	Well drained	D	Very limited	Very limited
Nuff very stony silty clay loam, 2 to 6 percent slopes	59K	Well drained	C	Very limited	Very limited
Slidell clay, 1 to 3 percent slopes	33K	Moderately well drained	D	Very limited	Very limited
Krum silty clay, cool, 1 to 5 percent slopes	31K	Well drained	C	Very limited	Very limited
Fairy-Hico complex, 1 to 5 percent slopes, moderately eroded	25K	Well drained	B	Not limited	Very limited
Pidcoke gravelly clay loam, 1 to 3 percent slopes	24K	Well drained	D	Very limited	Very limited
Eckrant-Rock outcrop complex, 1 to 8 percent slopes, extremely stony	24K	Well drained	D	Very limited	Very limited
Brackett-Pidcoke gravelly clay loams, 1 to 5 percent slopes	21K	Well drained	D	Very limited	Very limited
Brackett-Maloterre complex, 2 to 12 percent slopes	21K	Well drained	D	Very limited	Very limited
Real-Rock outcrop complex, 8 to 40 percent slopes	19K	Well drained	D	Very limited	Very limited
Topsey clay loam, 1 to 5 percent slopes	19K	Well drained	C	Somewhat limited	Very limited
Bosque clay loam, occasionally flooded	16K	Well drained	B	Very limited	Very limited
Real gravelly clay loam, 1 to 3 percent slopes	14K	Well drained	D	Very limited	Very limited
Nuff silty clay, 1 to 3 percent slopes	13K	Well drained	C	Very limited	Very limited
Cranfill gravelly clay loam, 3 to 8 percent slopes	12K	Well drained	C	Not limited	Very limited
Brackett gravelly clay loam, 8 to 30 percent slopes	12K	Well drained	C	Very limited	Very limited
Cho gravelly clay loam, 1 to 3 percent slopes	11K	Well drained	D	Very limited	Very limited
Oglesby gravelly silty clay, 1 to 3 percent slopes	11K	Well drained	D	Very limited	Very limited
Evant gravelly silty clay, 1 to 3 percent slopes	10K	Well drained	D	Very limited	Very limited
Wise clay loam, 3 to 5 percent slopes, moderately eroded	10K	Well drained	C	Somewhat 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.

Inceptisols

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

What This Means

Building & Foundations

About 85% 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 100% 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.