Presidio County, Texas

Survey Area TX377• 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 Presidio 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
Murray-Marfa-Boracho association, 1 to 5 percent slopes	176K	Well drained	B	Not limited	Somewhat limited
Corazones-Ojinaga complex, 1 to 12 percent slopes	121K	Well drained	A	Not limited	Not limited
Chinati-Boracho-Berrend association, 1 to 15 percent slopes	107K	Well drained	D	Very limited	Very limited
Brewster-Rock outcrop complex, 20 to 70 percent slopes	105K	Well drained	D	Very limited	Very limited
Musquiz clay loam, 0 to 3 percent slopes	101K	Well drained	C	Somewhat limited	Very limited
Brewster-Rock outcrop complex, 10 to 30 percent slopes	96K	Well drained	D	Very limited	Very limited
Pantak and Lingua soils, and Rock outcrop, 10 to 30 percent slopes	94K	Well drained	D	Very limited	Very limited
Manzanillo and Paisano soils, 1 to 30 percent slopes	82K	Well drained	D	Very limited	Very limited
Chinati-Boracho complex, 5 to 20 percent slopes	77K	Well drained	D	Very limited	Very limited
Corazones-Ojinaga complex, 10 to 40 percent slopes	72K	Well drained	A	Very limited	Very limited
Geefour-Corazones-Ojinaga association, 5 to 45 percent slopes	68K	Well drained	D	Very limited	Very limited
Marfa clay loam, 0 to 2 percent slopes, occasionally flooded	63K	Well drained	C	Very limited	Very limited
Manzanillo-Chilicotal-Holguin association, 1 to 30 percent slopes	61K	Well drained	D	Very limited	Very limited
Scotal-Ohtwo-Rock outcrop complex, 20 to 70 percent slopes	61K	Well drained	D	Very limited	Very limited
Riverwash and Pantera soils, 0 to 2 percent slopes, frequently flooded	57K	Excessively drained	A	Not rated	Not rated
Studybutte very gravelly sandy clay loam, 5 to 30 percent slopes	55K	Well drained	D	Very limited	Very limited
Chilimol-Boracho-Berrend complex, 1 to 8 percent slopes	55K	Well drained	B	Not limited	Very limited
Phantom-Musquiz complex, 1 to 5 percent slopes	49K	Well drained	C	Very limited	Very limited
Rock outcrop-Terlingua complex, 20 to 70 percent slopes	45K		D	Very limited	Very limited
Espy-Eppenauer complex, 1 to 5 percent slopes	42K	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.

Aridisols

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

Entisols

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

Mollisols

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

What This Means

Building & Foundations

About 67% 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 77% 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.