Brown and Mills Counties, Texas

Survey Area TX602• 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 Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Brown and Mills Counties, 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
Doudle-Real association, 1 to 8 percent slopes	100K	Well drained	B	Somewhat limited	Very limited
Callahan-Throck complex, 1 to 8 percent slopes	91K	Well drained	D	Somewhat limited	Very limited
Bolar-Brackett complex, 1 to 8 percent slopes	90K	Well drained	C	Very limited	Very limited
Palopinto-Speck complex, 1 to 5 percent slopes, rubbly	64K	Well drained	D	Very limited	Very limited
Tarrant-Tarpley complex, 1 to 8 percent slopes	56K	Well drained	D	Very limited	Very limited
Bolar clay loam, 3 to 5 percent slopes	46K	Well drained	C	Very limited	Very limited
Tarpley-Tarrant complex, 1 to 5 percent slopes	44K	Well drained	D	Very limited	Very limited
Frio silty clay loam, 0 to 1 percent slopes, occasionally flooded	32K	Well drained	C	Very limited	Very limited
Sunev clay loam, cool, 1 to 3 percent slopes	30K	Well drained	B	Not limited	Somewhat limited
Bonti-Owens complex, 8 to 30 percent slopes	27K	Well drained	C	Very limited	Very limited
Leeray clay, 1 to 3 percent slopes	26K	Well drained	D	Very limited	Very limited
Bonti-Callahan association, 1 to 8 percent slopes, extremely stony	26K	Well drained	C	Somewhat limited	Very limited
Krum silty clay, cool, 1 to 3 percent slopes	25K	Well drained	C	Very limited	Very limited
Owens-Harpersville complex, 8 to 45 percent slopes, extremely bouldery	24K	Well drained	D	Very limited	Very limited
Pedernales fine sandy loam, 1 to 3 percent slopes	24K	Well drained	C	Somewhat limited	Very limited
Real very gravelly clay loam, 8 to 30 percent slopes	19K	Well drained	D	Very limited	Very limited
Sagerton clay loam, warm, 1 to 3 percent slopes	18K	Well drained	C	Somewhat limited	Very limited
Winters fine sandy loam, 1 to 3 percent slopes	16K	Well drained	C	Somewhat limited	Very limited
Nukrum silty clay, 1 to 3 percent slopes	16K	Well drained	C	Very limited	Very limited
Real-Rock outcrop complex, 8 to 40 percent slopes	15K	Well drained	D	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.

Alfisols

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

Mollisols

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

Inceptisols

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

What This Means

Building & Foundations

About 61% 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 96% 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

Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.