Stephens County, Oklahoma

Survey Area OK137• Oklahoma

The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate 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 Stephens 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
Stephenville and Littleaxe soils, 3 to 5 percent slopes	50K	Well drained	C	Somewhat limited	Very limited
Chickasha-Huska complex, 1 to 3 percent slopes	48K	Well drained	B	Not limited	Somewhat limited
Stephenville-Darnell complex, 5 to 12 percent slopes	42K	Well drained	C	Somewhat limited	Very limited
Zaneis-Grainola-Lucien complex, 5 to 12 percent slopes	38K	Well drained	C	Somewhat limited	Very limited
Stephenville-Pulaski, frequently flooded, complex, 0 to 20 percent slopes	30K	Well drained	C	Somewhat limited	Very limited
Zaneis-Ashport frequently flooded complex, 0 to 12 percent slopes	24K	Well drained	C	Somewhat limited	Very limited
Kirkland-Renfrow complex, 1 to 3 percent slopes	24K	Well drained	D	Very limited	Very limited
Stephenville and Newalla soils, 1 to 8 percent slopes, severely eroded	24K	Well drained	C	Somewhat limited	Very limited
Stephenville fine sandy loam, 5 to 8 percent slopes	22K	Well drained	C	Somewhat limited	Very limited
Port fine sandy loam, 0 to 1 percent slopes, occasionally flooded	20K	Well drained	B	Very limited	Very limited
Stephenville and Littleaxe soils, 1 to 3 percent slopes	19K	Well drained	B	Somewhat limited	Very limited
Port loam, 0 to 1 percent slopes, occasionally flooded	19K	Well drained	B	Very limited	Very limited
Newalla fine sandy loam, 1 to 5 percent slopes	17K	Moderately well drained	D	Very limited	Very limited
Kingfisher-Loco complex, 5 to 12 percent slopes	14K	Well drained	D	Very limited	Very limited
Chickasha loam, 1 to 3 percent slopes	14K	Well drained	B	Not limited	Somewhat limited
Port-Oscar complex, 0 to 1 percent slopes, occasionally flooded	14K	Well drained	B	Very limited	Very limited
Zaneis loam, 5 to 8 percent slopes	13K	Well drained	C	Not limited	Very limited
Water	11K		D	Not rated	Not rated
Zaneis loam, 3 to 5 percent slopes	11K	Well drained	B	Not limited	Somewhat limited
Stephenville and Littleaxe soils, 3 to 5 percent slopes, eroded	10K	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.

Entisols

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

What This Means

Building & Foundations

About 23% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 82% 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.