Walker County, Texas

Survey Area TX471• Texas

The dominant drainage class is Moderately 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 Walker 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
Depcor-Huntsburg association, gently undulating	77K	Moderately well drained	A	Somewhat limited	Very limited
Falba fine sandy loam, 1 to 5 percent slopes	62K	Moderately well drained	D	Very limited	Very limited
Annona fine sandy loam, 1 to 5 percent slopes	50K	Moderately well drained	D	Very limited	Very limited
Elmina association, gently undulating	34K	Somewhat poorly drained	A	Somewhat limited	Very limited
Depcor-Huntsburg-Gunter association, gently rolling	29K	Moderately well drained	A	Somewhat limited	Very limited
Kanebreak soils, frequently flooded	25K	Somewhat poorly drained	C/D	Very limited	Very limited
Gunter association, undulating	20K	Moderately well drained	A	Somewhat limited	Very limited
Annona association, gently rolling	20K	Moderately well drained	D	Very limited	Very limited
Ferris clay, 1 to 5 percent slopes	17K	Well drained	D	Very limited	Very limited
Gomery association, undulating	15K	Somewhat poorly drained	C	Somewhat limited	Very limited
Gowker and Kanebreak soils, frequently flooded	14K	Moderately well drained	C/D	Very limited	Very limited
Kaufman clay, 0 to 1 percent slopes, occasionally flooded	14K	Moderately well drained	D	Very limited	Very limited
Arriola fine sandy loam, 1 to 5 percent slopes	14K	Moderately well drained	D	Very limited	Very limited
Rosenwall-Goreen association, gently undulating	9K	Moderately well drained	D	Very limited	Very limited
Water	8K		D	Not rated	Not rated
Falba and Arol soils, 1 to 5 percent slopes, eroded	8K	Moderately well drained	D	Very limited	Very limited
Arol fine sandy loam, 1 to 3 percent slopes	7K	Moderately well drained	D	Very limited	Very limited
Leson clay, 0 to 3 percent slopes	6K	Moderately well drained	D	Very limited	Very limited
Landman association, gently undulating	6K	Moderately well drained	A	Somewhat limited	Very limited
Redco clay, 0 to 2 percent slopes	6K	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.

Vertisols

High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.

Ultisols

Strongly weathered clay soils of the Southeast. Acidic and naturally low in nutrients. Clay subsoil can slow drainage.

Mollisols

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

What This Means

Building & Foundations

About 57% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, 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

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.