Bastrop County, Texas

Survey Area TX021• 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 Bastrop 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
Padina fine sand, 1 to 12 percent slopes	60K	Well drained	A	Not limited	Somewhat limited
Robco-Tanglewood complex, 1 to 5 percent slopes	46K	Moderately well drained	A	Somewhat limited	Very limited
Crockett fine sandy loam, 2 to 5 percent slopes, eroded	45K	Moderately well drained	C	Very limited	Very limited
Edge fine sandy loam, 1 to 5 percent slopes	43K	Well drained	C	Somewhat limited	Very limited
Edge gravelly fine sandy loam, 3 to 8 percent slopes	39K	Well drained	D	Somewhat limited	Very limited
Tabor fine sandy loam, 1 to 3 percent slopes	38K	Moderately well drained	C/D	Very limited	Very limited
Edge fine sandy loam, 2 to 5 percent slopes, moderately eroded	34K	Well drained	C	Somewhat limited	Very limited
Silstid loamy fine sand, 1 to 5 percent slopes	27K	Well drained	B	Not limited	Somewhat limited
Bosque loam, 0 to 1 percent slopes, occasionally flooded	18K	Well drained	B	Very limited	Very limited
Crockett fine sandy loam, 1 to 3 percent slopes	16K	Moderately well drained	C	Very limited	Very limited
Sayers fine sandy loam, 0 to 1 percent slopes, occasionally flooded	14K	Somewhat excessively drained	A	Very limited	Very limited
Whitesboro clay loam, 0 to 1 percent slopes, frequently flooded	12K	Moderately well drained	B	Very limited	Very limited
Behring clay loam, 3 to 5 percent slopes, eroded	12K	Moderately well drained	D	Very limited	Very limited
Wilson clay loam, 1 to 3 percent slopes	11K	Moderately well drained	C	Very limited	Very limited
Jedd gravelly fine sandy loam, 5 to 20 percent slopes	11K	Well drained	C	Somewhat limited	Very limited
Crockett fine sandy loam, 3 to 8 percent slopes, severely eroded	11K	Moderately well drained	C	Very limited	Very limited
Behring clay loam, 1 to 3 percent slopes	10K	Moderately well drained	D	Very limited	Very limited
Smithville fine sandy loam, 0 to 1 percent slopes	9K	Well drained	B	Somewhat limited	Somewhat limited
Edge fine sandy loam, 5 to 12 percent slopes, eroded	7K	Well drained	C	Somewhat limited	Very limited
Rosanky fine sandy loam, 3 to 8 percent slopes	6K	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.

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.

Inceptisols

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

What This Means

Building & Foundations

About 39% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

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.