Atascosa County, Texas

Survey Area TX013• 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 Atascosa 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
Nusil-Rhymes association, 0 to 5 percent slopes	62K	Well drained	C	Not limited	Very limited
Aluf-Hitilo association, gently undulating	55K	Somewhat excessively drained	A	Not limited	Very limited
Poth loamy fine sand, 0 to 3 percent slopes	53K	Well drained	C	Not limited	Very limited
Floresville fine sandy loam, 1 to 3 percent slopes	50K	Well drained	C	Somewhat limited	Very limited
Webb fine sandy loam, 1 to 3 percent slopes	47K	Well drained	C	Somewhat limited	Very limited
Hanis sandy clay loam, 1 to 3 percent slopes	46K	Well drained	C	Somewhat limited	Very limited
Wilco loamy fine sand, 0 to 3 percent slopes	38K	Well drained	C	Somewhat limited	Very limited
Elmendorf-Denhawken complex, 1 to 4 percent slopes	36K	Well drained	D	Very limited	Very limited
Amphion sandy clay loam, 1 to 3 percent slopes	34K	Well drained	C	Somewhat limited	Very limited
Monteola clay, 1 to 3 percent slopes	33K	Well drained	D	Very limited	Very limited
Christine soils, occasionally flooded	32K	Somewhat poorly drained	C	Very limited	Very limited
Imogene fine sandy loam, 0 to 2 percent slopes	29K	Moderately well drained	D	Somewhat limited	Very limited
Miguel fine sandy loam, 1 to 3 percent slopes	21K	Well drained	C	Somewhat limited	Very limited
Monteola clay, saline, 1 to 3 percent slopes	20K	Well drained	D	Very limited	Very limited
Campbellton loam, 1 to 3 percent slopes	15K	Well drained	C	Very limited	Very limited
Duval very fine sandy loam, 1 to 3 percent slopes	14K	Well drained	B	Not limited	Somewhat limited
Poteet soils, occasionally flooded	13K	Moderately well drained	C	Very limited	Very limited
Sinton soils, frequently flooded	13K	Well drained	B	Very limited	Very limited
Weigang sandy clay loam, 1 to 5 percent slopes	12K	Well drained	D	Very limited	Very limited
Hindes very gravelly loam, 1 to 8 percent slopes	12K	Well drained	C	Not 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.

What This Means

Building & Foundations

About 27% 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.