Custer County, Oklahoma

Survey Area OK039• 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 Custer 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 12 percent slopes	135K	Well drained	D	Very limited	Very limited
St. Paul silt loam, 1 to 3 percent slopes	56K	Well drained	C	Somewhat limited	Very limited
Carey and Woodward soils, 3 to 5 percent slopes	46K	Well drained	B	Not limited	Very limited
Carey silt loam, 1 to 3 percent slopes	44K	Well drained	B	Not limited	Somewhat limited
Woodward silt loam, 5 to 8 percent slopes	36K	Well drained	C	Somewhat limited	Very limited
Woodward-Quinlan complex, 3 to 5 percent slopes	32K	Well drained	C	Somewhat limited	Very limited
Clairemont silt loam, 0 to 1 percent slopes, occasionally flooded, cool	28K	Well drained	B	Very limited	Very limited
St. Paul and Carey soils, 3 to 5 percent slopes	27K	Well drained	C	Somewhat limited	Very limited
Cordell-Rock outcrop complex, 1 to 20 percent slopes	26K	Somewhat excessively drained	D	Very limited	Very limited
Dale silt loam, 0 to 1 percent slopes, rarely flooded	24K	Well drained	B	Very limited	Somewhat limited
Quinlan and Woodward soils, 3 to 8 percent slopes, severely eroded	17K	Well drained	D	Very limited	Very limited
Pond Creek silt loam, 0 to 1 percent slopes	16K	Well drained	B	Somewhat limited	Somewhat limited
Lucien-Rock outcrop complex, 5 to 20 percent slopes	15K	Well drained	D	Very limited	Very limited
Pond Creek fine sandy loam, 1 to 3 percent slopes	11K	Well drained	C	Somewhat limited	Very limited
St. Paul silt loam, 0 to 1 percent slopes	9K	Well drained	C	Somewhat limited	Very limited
Water	9K		D	Not rated	Not rated
Lovedale fine sandy loam, 1 to 3 percent slopes	8K	Well drained	B	Not limited	Very limited
Pond Creek silt loam, 1 to 3 percent slopes	8K	Well drained	B	Somewhat limited	Somewhat limited
Grant loam, 3 to 5 percent slopes	8K	Well drained	B	Not limited	Somewhat limited
Woodward-Clairemont complex, 0 to 12 percent slopes	8K	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.

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 43% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 80% 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.