Major County, Oklahoma

Survey Area OK093• Oklahoma

The dominant drainage class is Well drained and the dominant hydrologic group is A (high infiltration, low 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 Major 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
Nobscot sand, 5 to 20 percent slopes	73K	Well drained	A	Somewhat limited	Very limited
Burford-Vernon complex, 5 to 12 percent slopes	50K	Well drained	C	Somewhat limited	Very limited
Meno loamy fine sand, 0 to 3 percent slopes	26K	Somewhat poorly drained	B	Very limited	Very limited
Derby loamy fine sand, 0 to 3 percent slopes	23K	Somewhat excessively drained	A	Not limited	Very limited
Eda sand, 0 to 3 percent slopes	22K	Somewhat excessively drained	A	Not limited	Very limited
Lovedale fine sandy loam, 1 to 3 percent slopes	21K	Well drained	B	Not limited	Very limited
Nobscot sand, 0 to 5 percent slopes	20K	Well drained	A	Not limited	Very limited
Knoco-Cornick-Rock outcrop complex, 2 to 20 percent slopes	19K	Well drained	D	Very limited	Very limited
Port silt loam, 0 to 1 percent slopes, occasionally flooded	18K	Well drained	B	Very limited	Very limited
Gaddy fine sand, 0 to 1 percent slopes, frequently flooded	18K	Somewhat excessively drained	A	Very limited	Very limited
Knoco-Badland complex, 1 to 3 percent slopes	16K	Well drained	D	Very limited	Very limited
Eda sand, 3 to 8 percent slopes	14K	Somewhat excessively drained	A	Not limited	Very limited
McLain silty clay loam, 0 to 1 percent slopes, rarely flooded	13K	Moderately well drained	C	Very limited	Very limited
Grant silt loam, 1 to 3 percent slopes	13K	Well drained	B	Somewhat limited	Somewhat limited
Tillman clay loam, 1 to 3 percent slopes	13K	Well drained	C	Very limited	Very limited
Quinlan-Rock outcrop complex, 12 to 45 percent slopes	12K	Well drained	D	Very limited	Very limited
Dill-Quinlan complex, 5 to 12 percent slopes	11K	Well drained	B	Somewhat limited	Very limited
Nobscot-Eda complex, 5 to 20 percent slopes	11K	Well drained	A	Somewhat limited	Very limited
Grant-Yahola complex, 0 to 12 percent slopes	11K	Well drained	B	Somewhat limited	Somewhat limited
Knoco-Rock outcrop complex, 20 to 40 percent slopes	10K	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.

Entisols

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

Alfisols

Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

What This Means

Building & Foundations

About 34% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 94% 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.