Trinity County, Texas

Survey Area TX455• 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 Trinity 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
Fuller fine sandy loam, 1 to 3 percent slopes	104K	Somewhat poorly drained	D	Very limited	Very limited
Keltys fine sandy loam, 1 to 3 percent slopes	41K	Moderately well drained	D	Somewhat limited	Very limited
Kurth fine sandy loam, 1 to 3 percent slopes	41K	Moderately well drained	C	Somewhat limited	Very limited
Moten-Multey complex, 0 to 2 percent slopes	40K	Moderately well drained	C/D	Very limited	Very limited
Koury silt loam, 0 to 1 percent slopes, frequently flooded	38K	Moderately well drained	C	Very limited	Very limited
Penning very fine sandy loam, 0 to 2 percent slopes	20K	Moderately well drained	C	Somewhat limited	Very limited
Pophers silty clay loam, 0 to 1 percent slopes, frequently flooded	14K	Somewhat poorly drained	C	Very limited	Very limited
Water greater than 40 acres in size	13K		D	Not rated	Not rated
Moswell loam, 1 to 5 percent slopes	12K	Well drained	D	Very limited	Very limited
Herty loam, 1 to 3 percent slopes	12K	Moderately well drained	D	Very limited	Very limited
Lovelady loamy fine sand, 1 to 5 percent slopes	11K	Well drained	A	Somewhat limited	Very limited
Colita fine sandy loam, 1 to 3 percent slopes	11K	Somewhat poorly drained	B	Somewhat limited	Very limited
Ozias-Pophers complex, 0 to 1 percent slopes, frequently flooded	9K	Somewhat poorly drained	D	Very limited	Very limited
Rosenwall fine sandy loam, 5 to 15 percent slopes	8K	Moderately well drained	D	Very limited	Very limited
Fuller fine sandy loam, 0 to 1 percent slopes	8K	Somewhat poorly drained	D	Very limited	Very limited
Kurth fine sandy loam, 5 to 8 percent slopes	7K	Moderately well drained	C	Very limited	Very limited
Rosenwall fine sandy loam, 1 to 5 percent slopes	7K	Moderately well drained	D	Very limited	Very limited
Colita-Laska complex, 0 to 2 percent slopes	7K	Somewhat poorly drained	B/D	Very limited	Very limited
Alazan very fine sandy loam, 0 to 2 percent slopes	5K	Moderately well drained	C	Very limited	Very limited
Keltys fine sandy loam, 5 to 8 percent slopes	4K	Moderately well drained	C/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 66% 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 96% 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.