Pecos County, Texas

Survey Area TX371• 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 Aridisols — dry-climate soils with limited organic matter and often calcium carbonate accumulation. 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 Pecos 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
Ector-Rock outcrop complex, 10 to 60 percent slopes	546K	Well drained	D	Very limited	Very limited
Reagan-Hodgins association, nearly level	452K	Well drained	B	Somewhat limited	Somewhat limited
Reakor association, nearly level	346K	Well drained	C	Somewhat limited	Very limited
Lozier association, hilly	276K	Well drained	D	Very limited	Very limited
Sanderson-Upton complex, 1 to 8 percent slopes	239K	Well drained	B	Not limited	Somewhat limited
Ector-Rock outcrop association, 1 to 15 percent slopes	205K	Well drained	D	Very limited	Very limited
Upton association, gently sloping	159K	Well drained	D	Very limited	Very limited
Dalby clay, 0 to 1 percent slopes	135K	Well drained	D	Very limited	Very limited
Ector-Upton association, 0 to 5 percent slopes	126K	Well drained	D	Very limited	Very limited
Delnorte association, gently undulating	82K	Well drained	D	Very limited	Very limited
Lozier-Rock outcrop association, steep	73K		D	Very limited	Very limited
Iraan silty clay loam, 0 to 2 percent slopes, occasionally flooded	69K	Well drained	C	Very limited	Very limited
Reakor silty clay loam, 0 to 1 percent slopes	45K	Well drained	C	Somewhat limited	Very limited
Orla association, nearly level	36K	Well drained	B	Very limited	Not limited
Monahans-Pajarito association, nearly level	35K	Well drained	B	Very limited	Somewhat limited
Pecos-Patrole-Arno association	31K	Moderately well drained	D	Very limited	Very limited
Reeves-Hoban association, nearly level	28K	Well drained	B	Very limited	Somewhat limited
Balmorhea association	28K	Somewhat poorly drained	C	Very limited	Very limited
Hoban silty clay loam, 0 to 1 percent slopes	24K	Well drained	B	Very limited	Not limited
Reagan silty clay loam, saline	23K	Well drained	B	Somewhat limited	Somewhat 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.

Aridisols

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

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.

What This Means

Building & Foundations

About 62% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 71% 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

Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.