Kinney County, Texas

Survey Area TX271• 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 Kinney 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
Uvalde silty clay loam, dry, 0 to 2 percent slopes	177K	Well drained	C	Somewhat limited	Very limited
Olmos-Langtry association, 1 to 8 percent slopes	158K	Well drained	D	Very limited	Very limited
Rock Outcrop-Ector, warm, complex, 10 to 40 percent slopes	107K		D	Very limited	Very limited
Olmos very cobbly loam, 0 to 4 percent slopes	106K	Well drained	D	Very limited	Very limited
Tarrant-Rock outcrop complex, 8 to 20 percent slopes	85K	Well drained	D	Very limited	Very limited
Montell clay association, 0 to 1 percent slopes	58K	Moderately well drained	D	Very limited	Very limited
Ector soils, warm, 1 to 8 percent slopes	56K	Well drained	D	Very limited	Very limited
Ector-Rock outcrop complex, warm, 5 to 20 percent slopes	28K	Well drained	D	Very limited	Very limited
Dev-Riverwash complex, 0 to 3 percent slopes, frequently flooded	19K	Well drained	A	Very limited	Very limited
Divot clay loam, occasionally flooded	14K	Well drained	C	Very limited	Very limited
Knippa clay, 0 to 1 percent slopes	11K	Well drained	C	Somewhat limited	Very limited
Jimenez-Zapata association, 5 to 20 percent slopes	10K	Well drained	D	Very limited	Very limited
Pintas silty clay loam, frequently flooded	8K	Moderately well drained	B	Very limited	Very limited
Montell clay, low, occasionally flooded	8K	Moderately well drained	D	Very limited	Very limited
Coahuila loam, 0 to 3 percent slopes	7K	Well drained	B	Somewhat limited	Somewhat limited
Kavett-Tarrant stony clays complex, 0 to 3 percent slopes	5K	Well drained	D	Very limited	Very limited
Tarrant soils, 1 to 8 percent slopes	4K	Well drained	D	Very limited	Very limited
Riverwash and Dev soils, 0 to 3 percent slopes, frequently flooded	3K	Excessively drained	A	Very limited	Very limited
Lagloria loam	3K	Well drained	B	Very limited	Somewhat limited
Quemado soils, 1 to 5 percent slopes	2K	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.

Inceptisols

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

Aridisols

Dry-climate soils with low organic matter. Often have caliche layers that make excavation difficult. Low shrink-swell is good for foundations.

Vertisols

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

What This Means

Building & Foundations

About 77% 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 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.