Throckmorton County, Texas

Survey Area TX447• 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 Throckmorton 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
Lueders-Throck complex, 1 to 8 percent slopes, extremely stony	95K	Well drained	D	Very limited	Very limited
Leeray clay, 0 to 1 percent slopes	55K	Well drained	D	Very limited	Very limited
Owens-Lueders complex, 5 to 30 percent slopes, extremely bouldery	44K	Well drained	D	Very limited	Very limited
Throck silty clay loam, 1 to 5 percent slopes	37K	Well drained	C	Very limited	Very limited
Owens-Harpersville complex, 8 to 45 percent slopes, extremely bouldery	35K	Well drained	D	Very limited	Very limited
Clearfork silty clay loam, 0 to 1 percent slopes, occasionally flooded	31K	Well drained	C	Very limited	Very limited
Rowden clay loam, 0 to 3 percent slopes	25K	Well drained	D	Very limited	Very limited
Lueders-Springcreek complex, 1 to 8 percent slopes, very stony	23K	Well drained	D	Very limited	Very limited
Bluegrove fine sandy loam, 1 to 3 percent slopes	18K	Well drained	D	Somewhat limited	Very limited
Sagerton clay loam, moist, 1 to 3 percent slopes	17K	Well drained	C	Somewhat limited	Very limited
Nukrum clay, 1 to 3 percent slopes	16K	Well drained	C	Very limited	Very limited
Sagerton clay loam, moist, 0 to 1 percent slopes	13K	Well drained	C	Somewhat limited	Very limited
Clairemont silt loam, moist, 0 to 2 percent slopes, occasionally flooded	12K	Well drained	B	Very limited	Very limited
Thurber clay loam, 1 to 3 percent slopes	11K	Moderately well drained	D	Very limited	Very limited
Gageby loam, moist, 0 to 2 percent slopes, occasionally flooded	11K	Well drained	B	Very limited	Very limited
Swenson clay loam, 0 to 2 percent slopes	11K	Well drained	C	Very limited	Very limited
Rowena clay loam, 1 to 3 percent slopes	11K	Well drained	C	Somewhat limited	Very limited
Rowena clay loam, 0 to 1 percent slopes	9K	Well drained	C	Somewhat limited	Very limited
Nuvalde clay loam, cool, 1 to 3 percent slopes	9K	Well drained	C	Somewhat limited	Very limited
Speck silty clay loam, 0 to 2 percent slopes	9K	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.

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.

Inceptisols

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

What This Means

Building & Foundations

About 84% 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 100% 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.