Irion County, Texas

Survey Area TX235• 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 Irion 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 soils, moist, 1 to 8 percent slopes	188K	Well drained	D	Very limited	Very limited
Angelo silty clay loam, 0 to 1 percent slopes	65K	Well drained	C	Somewhat limited	Very limited
Angelo silty clay loam, 1 to 3 percent slopes	63K	Well drained	C	Somewhat limited	Very limited
Noelke very cobbly silty clay loam, undulating	46K	Well drained	D	Very limited	Very limited
Ector soils, moist, 3 to 30 percent slopes	46K	Well drained	D	Very limited	Very limited
Cho gravelly loam, dry, 1 to 8 percent slopes	43K	Well drained	D	Very limited	Very limited
Conger loam, 0 to 3 percent slopes	41K	Well drained	D	Very limited	Very limited
Tarrant soils, dry, 1 to 8 percent slopes	27K	Well drained	D	Very limited	Very limited
Rioconcho and Dev soils, 0 to 3 percent slopes, frequently flooded	26K	Well drained	C	Very limited	Very limited
Nuvalde silty clay loam, dry, 1 to 3 percent slopes	24K	Well drained	C	Somewhat limited	Very limited
Nuvalde silty clay loam, dry, 0 to 1 percent slopes	22K	Well drained	C	Somewhat limited	Very limited
Mereta-Nuvalde complex, 1 to 3 percent slopes	18K	Well drained	D	Very limited	Very limited
Rioconcho silty clay loam, 0 to 2 percent slopes, occasionally flooded	17K	Well drained	C	Very limited	Very limited
Broome silt loam, 1 to 3 percent slopes	15K	Well drained	B	Somewhat limited	Somewhat limited
Reagan silty clay loam, 1 to 3 percent slopes	7K	Well drained	C	Not limited	Very limited
Mereta-Nuvalde complex, 0 to 1 percent slopes	7K	Well drained	D	Very limited	Very limited
Reagan silty clay loam, moist, 0 to 1 percent slopes	6K	Well drained	C	Not limited	Very limited
Blakeney and Spade fine sandy loams, undulating	5K	Well drained	D	Very limited	Very limited
Broome silt loam, 0 to 1 percent slopes	2K	Well drained	B	Somewhat limited	Somewhat limited
Broome silt loam, 3 to 5 percent slopes	2K	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.

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.

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.

Inceptisols

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

What This Means

Building & Foundations

About 69% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 97% 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.