Comanche County, Oklahoma

Survey Area OK031• Oklahoma

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 Comanche County, Oklahoma. 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
Foard and Tillman soils, 1 to 3 percent slopes	85K	Well drained	D	Very limited	Very limited
Brico soils and Rock outcrop, 5 to 50 percent slopes	46K	Well drained	C	Very limited	Very limited
Zaneis-Huska complex, 1 to 3 percent slopes	44K	Well drained	B	Not limited	Somewhat limited
Vernon-Knoco complex, 3 to 12 percent slopes	42K	Well drained	D	Very limited	Very limited
Lucien-Grainola-Zaneis complex, 5 to 12 percent slopes	36K	Well drained	D	Very limited	Very limited
Brico-Rock outcrop complex, 5 to 40 percent slopes	34K	Well drained	C	Very limited	Very limited
Foard-Hinkle silt loams complex, 1 to 3 percent slopes	33K	Well drained	D	Very limited	Very limited
Ashport loam, 0 to 1 percent slopes, occasionally flooded	32K	Well drained	B	Very limited	Very limited
Ashport clay loam, 0 to 1 percent slopes, occasionally flooded	31K	Well drained	B	Very limited	Very limited
Rock outcrop-Brico complex, 3 to 20 percent slopes	31K		D	Very limited	Very limited
Vernon clay, 1 to 5 percent slopes	18K	Well drained	D	Very limited	Very limited
Lawton loam, 1 to 3 percent slopes	18K	Well drained	C	Somewhat limited	Very limited
Zaneis and Stephenville soils, 2 to 8 percent slopes, severely eroded	17K	Well drained	B	Not limited	Somewhat limited
Vernon-Clairemont frequently flooded complex, 0 to 12 percent slopes	16K	Well drained	D	Very limited	Very limited
Foard silt loam, 0 to 1 percent slopes	15K	Well drained	D	Very limited	Not limited
Zaneis loam, 3 to 5 percent slopes, moderately eroded	15K	Well drained	B	Somewhat limited	Somewhat limited
Kiti-Rock outcrop complex, 3 to 25 percent slopes	13K	Well drained	D	Very limited	Very limited
Ashport, Port and Yahola soils, 0 to 1 percent slopes, frequently flooded	13K	Well drained	B	Very limited	Very limited
Water	12K		D	Not rated	Not rated
Lawton loam, 3 to 5 percent slopes	12K	Well drained	C	Somewhat 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 79% 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 81% 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.