Wilson County, Texas

Survey Area TX493• 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 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 Wilson 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
Aluf and Hitilo soils, undulating	93K	Somewhat excessively drained	A	Not limited	Very limited
Wilco loamy fine sand, 0 to 3 percent slopes	44K	Well drained	C	Somewhat limited	Very limited
Elmendorf-Denhawken complex, 1 to 4 percent slopes	39K	Well drained	D	Very limited	Very limited
Miguel fine sandy loam, 1 to 3 percent slopes	39K	Well drained	C	Somewhat limited	Very limited
Floresville fine sandy loam, 1 to 3 percent slopes	37K	Well drained	C	Somewhat limited	Very limited
Clareville clay loam, 1 to 3 percent slopes	20K	Well drained	C	Somewhat limited	Very limited
Papalote loamy fine sand, 0 to 3 percent slopes	15K	Moderately well drained	C	Somewhat limited	Very limited
Luling clay, 0 to 4 percent slopes	15K	Well drained	D	Very limited	Very limited
Leming loamy fine sand, 0 to 3 percent slopes	14K	Moderately well drained	C	Somewhat limited	Very limited
Poth loamy fine sand, 0 to 3 percent slopes	12K	Well drained	C	Not limited	Very limited
Venus clay loam, 0 to 1 percent slopes	11K	Well drained	B	Not limited	Somewhat limited
Buchel clay, 0 to 1 percent slopes, occasionally flooded	11K	Moderately well drained	D	Very limited	Very limited
Zavala fine sandy loam, frequently flooded	10K	Well drained	A	Very limited	Very limited
Orelia fine sandy loam, 0 to 2 percent slopes	9K	Somewhat poorly drained	D	Very limited	Very limited
Rhymes fine sand, 0 to 5 percent slopes	9K	Somewhat excessively drained	A	Not limited	Very limited
Miguel fine sandy loam, 0 to 1 percent slopes	8K	Well drained	C	Somewhat limited	Very limited
Coy clay loam, 1 to 3 percent slopes	8K	Well drained	C	Very limited	Very limited
Nocken stony soils and rock outcrop, 1 to 8 percent slopes	7K	Well drained	C	Somewhat limited	Very limited
Tordia clay, 1 to 4 percent slopes	7K	Well drained	D	Very limited	Very limited
Crockett fine sandy loam, 1 to 3 percent slopes	7K	Moderately 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.

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 25% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 97% 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.