Blanco and Burnet Counties, Texas

Survey Area TX601• 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 Blanco and Burnet 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
Brackett association, 1 to 8 percent slopes	170K	Well drained	D	Very limited	Very limited
Brackett-Real association, 10 to 30 percent slopes	157K	Well drained	D	Very limited	Very limited
Purves clay, 1 to 8 percent slopes	113K	Well drained	D	Very limited	Very limited
Hensley gravelly loam, 1 to 8 percent slopes	93K	Well drained	D	Very limited	Very limited
Eckrant-Rock outcrop association, 1 to 10 percent slopes	68K	Well drained	D	Very limited	Very limited
Doss silty clay, moist, 1 to 5 percent slopes	62K	Well drained	D	Very limited	Very limited
Krum clay, 1 to 3 percent slopes	41K	Well drained	C	Very limited	Very limited
Bolar clay loam, 1 to 3 percent slopes	38K	Well drained	C	Very limited	Very limited
Nebgen-Oben-Rock outcrop complex, 1 to 20 percent slopes	36K	Well drained	D	Very limited	Very limited
Tarpley-Eckrant complex, 1 to 8 percent slopes, stony	30K	Well drained	D	Very limited	Very limited
Voca-Click association, 1 to 5 percent slopes	27K	Well drained	C	Somewhat limited	Very limited
Eckert-Rock outcrop complex, 2 to 20 percent slopes	24K	Well drained	D	Very limited	Very limited
Krum clay, 3 to 5 percent slopes	22K	Well drained	C	Very limited	Very limited
Keese-Rock outcrop complex, 1 to 12 percent slopes	22K	Well drained	D	Very limited	Very limited
Water	16K		D	Not rated	Not rated
Eckrant-Rock outcrop association, 8 to 30 percent slopes	16K	Well drained	D	Very limited	Very limited
Aledo gravelly clay loam, 1 to 8 percent slopes	15K	Well drained	D	Very limited	Very limited
Purves gravelly clay, 1 to 3 percent slopes	14K	Well drained	D	Very limited	Very limited
Pedernales fine sandy loam, 1 to 3 percent slopes	12K	Well drained	C	Somewhat limited	Very limited
Oakalla silty clay loam, 0 to 2 percent slopes, occasionally flooded	10K	Well drained	B	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.

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.

Inceptisols

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

What This Means

Building & Foundations

About 94% 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 98% 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.