Polk and San Jacinto Counties, Texas

Survey Area TX617• 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 Polk and San Jacinto 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
Pinetucky fine sandy loam, 1 to 5 percent slopes	140K	Moderately well drained	C	Not limited	Very limited
Hatliff-Pluck-Kian complex, 0 to 1 percent slopes, frequently flooded	138K	Poorly drained	A	Very limited	Very limited
Doucette loamy fine sand, 1 to 5 percent slopes	67K	Well drained	B	Not limited	Somewhat limited
Water	65K		D	Not rated	Not rated
Woodville fine sandy loam, 5 to 12 percent slopes	61K	Somewhat poorly drained	D	Very limited	Very limited
Woodville fine sandy loam, 1 to 5 percent slopes	49K	Somewhat poorly drained	D	Very limited	Very limited
Stringtown-Bonwier association, strongly sloping	45K	Well drained	B	Somewhat limited	Somewhat limited
Colita-Laska complex, 1 to 5 percent slopes	40K	Moderately well drained	B/D	Very limited	Very limited
Leggett fine sandy loam, 0 to 3 percent slopes	31K	Somewhat poorly drained	B/D	Very limited	Very limited
Conroe gravelly loamy fine sand, 0 to 5 percent slopes	29K	Moderately well drained	B	Somewhat limited	Very limited
Choates loamy fine sand, 1 to 5 percent slopes	22K	Somewhat poorly drained	A	Very limited	Very limited
Diboll-Keltys complex, 1 to 5 percent slopes	21K	Moderately well drained	D	Very limited	Very limited
Wiergate clay, 5 to 8 percent slopes	21K	Somewhat poorly drained	D	Very limited	Very limited
Belrose loamy fine sand, 0 to 3 percent slopes	21K	Moderately well drained	A	Somewhat limited	Very limited
Betis loamy fine sand, 1 to 5 percent slopes	19K	Somewhat excessively drained	A	Not limited	Very limited
Boykin loamy fine sand, 1 to 5 percent slopes	16K	Well drained	B	Not limited	Somewhat limited
Laska fine sandy loam, 1 to 5 percent slopes	15K	Moderately well drained	B	Very limited	Very limited
Moswell fine sandy loam, 5 to 12 percent slopes	14K	Well drained	D	Very limited	Very limited
Wiergate clay, 1 to 5 percent slopes	13K	Somewhat poorly drained	D	Very limited	Very limited
Sorter-Dallardsville complex, 0 to 1 percent slopes	12K	Poorly 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.

Ultisols

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

Vertisols

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

What This Means

Building & Foundations

About 52% 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 76% 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.