Dewey County, Oklahoma

Survey Area OK043• 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 Inceptisols — young soils with minimal horizon development but more than Entisols. 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 Dewey 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
Quinlan-Woodward complex, 5 to 20 percent slopes	109K	Well drained	D	Very limited	Very limited
St. Paul silt loam, 1 to 3 percent slopes	37K	Well drained	C	Somewhat limited	Very limited
Quinlan loam, 8 to 20 percent slopes	37K	Well drained	D	Very limited	Very limited
Nobscot sand, 5 to 20 percent slopes	37K	Well drained	A	Somewhat limited	Very limited
Carey silt loam, 3 to 5 percent slopes	31K	Well drained	B	Somewhat limited	Somewhat limited
Hardeman fine sandy loam, 8 to 15 percent slopes, cool	28K	Well drained	A	Somewhat limited	Very limited
Quinlan-Hardeman complex, 5 to 20 percent slopes	26K	Well drained	D	Very limited	Very limited
Nobscot-Grandfield complex, 0 to 5 percent slopes	20K	Well drained	A	Not limited	Very limited
St. Paul silt loam, 3 to 5 percent slopes	18K	Well drained	C	Somewhat limited	Very limited
Carey silt loam, 1 to 3 percent slopes	17K	Well drained	B	Not limited	Somewhat limited
Lincoln fine sandy loam, 0 to 1 percent slopes, frequently flooded	17K	Somewhat excessively drained	A	Very limited	Very limited
Quinlan-Woodward complex, 3 to 5 percent slopes, eroded	16K	Well drained	D	Very limited	Very limited
Hardeman fine sandy loam, 3 to 5 percent slopes, cool	15K	Well drained	A	Not limited	Very limited
Hardeman fine sandy loam, 5 to 8 percent slopes, cool	12K	Well drained	A	Not limited	Very limited
Grandfield fine sandy loam, 1 to 3 percent slopes	11K	Well drained	B	Not limited	Very limited
Westola fine sandy loam, 0 to 1 percent slopes, occasionally flooded	10K	Well drained	A	Very limited	Very limited
Woodward loam, 3 to 5 percent slopes	10K	Well drained	C	Somewhat limited	Very limited
Lincoln clay loam, 0 to 1 percent slopes, frequently flooded	9K	Somewhat excessively drained	A	Very limited	Very limited
Carwile-Eda complex, 0 to 5 percent slopes	9K	Poorly drained	C/D	Very limited	Very limited
Woodward-Carey complex, 3 to 5 percent slopes, eroded	9K	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.

Inceptisols

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

Alfisols

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

Mollisols

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

Entisols

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

What This Means

Building & Foundations

About 48% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 89% 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.