Fannin County, Texas

Survey Area TX147• 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 Fannin 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
Fairlie-Dalco complex, 1 to 3 percent slopes	64K	Moderately well drained	D	Very limited	Very limited
Wilson silt loam, 0 to 1 percent slopes	33K	Moderately well drained	C/D	Very limited	Very limited
Frioton silty clay loam, occasionally flooded	29K	Well drained	C	Very limited	Very limited
Ivanhoe silt loam, 0 to 1 percent slopes	29K	Somewhat poorly drained	D	Very limited	Very limited
Houston Black clay, 1 to 3 percent slopes	27K	Moderately well drained	D	Very limited	Very limited
Ferris clay, 5 to 12 percent slopes, eroded	23K	Well drained	D	Very limited	Very limited
Whitewright-Howe complex, 5 to 12 percent slopes, eroded	18K	Well drained	D	Very limited	Very limited
Heiden-Ferris complex, 2 to 6 percent slopes, eroded	18K	Well drained	D	Very limited	Very limited
Crockett loam, 1 to 3 percent slopes	18K	Moderately well drained	D	Very limited	Very limited
Derly, occasionally ponded-Raino complex, 0 to 1 percent slopes	17K	Poorly drained	D	Very limited	Very limited
Normangee clay loam, 1 to 3 percent slopes	17K	Moderately well drained	C	Very limited	Very limited
Freestone-Hicota complex, 0 to 2 percent slopes	16K	Moderately well drained	D	Very limited	Very limited
Leson clay, 1 to 3 percent slopes	14K	Moderately well drained	D	Very limited	Very limited
Whakana very fine sandy loam, 5 to 12 percent slopes	14K	Well drained	B	Somewhat limited	Somewhat limited
Tinn clay, 0 to 1 percent slopes, occasionally flooded	13K	Moderately well drained	D	Very limited	Very limited
Tinn clay, 0 to 1 percent slopes, frequently flooded	13K	Moderately well drained	D	Very limited	Very limited
Howe-Whitewright complex, 3 to 5 percent slopes	13K	Well drained	C	Somewhat limited	Very limited
Fairlie clay, 0 to 1 percent slopes	11K	Moderately well drained	D	Very limited	Very limited
Bonham silt loam, 1 to 3 percent slopes	10K	Moderately well drained	C	Very limited	Very limited
Karma loam, 0 to 2 percent slopes	10K	Well drained	B	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.

Mollisols

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

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.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

What This Means

Building & Foundations

About 91% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, 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.