McIntosh County, Oklahoma

Survey Area OK091• 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 McIntosh 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
Endsaw-Hector association, 12 to 20 percent slopes	66K	Well drained	D	Very limited	Very limited
Water	64K		D	Not rated	Not rated
Linker-Hector complex, 3 to 5 percent slopes	29K	Well drained	D	Very limited	Very limited
Taloka silt loam, 0 to 1 percent slopes	24K	Somewhat poorly drained	D	Very limited	Very limited
Endsaw-Hector complex, 12 to 30 percent slopes, very rocky	21K	Moderately well drained	D	Very limited	Very limited
Dennis-Verdigris complex, 0 to 8 percent slopes	17K	Somewhat poorly drained	C/D	Very limited	Very limited
Dennis silt loam, 1 to 3 percent slopes	16K	Somewhat poorly drained	C/D	Very limited	Very limited
Linker fine sandy loam, 3 to 5 percent slopes	15K	Well drained	C	Very limited	Very limited
Taloka silt loam, 1 to 3 percent slopes	15K	Somewhat poorly drained	D	Very limited	Very limited
Parsons silt loam, 0 to 1 percent slopes	13K	Somewhat poorly drained	D	Very limited	Very limited
Verdigris silt loam, 0 to 1 percent slopes, frequently flooded	13K	Well drained	B	Very limited	Very limited
Dennis silt loam, 3 to 5 percent slopes, eroded	9K	Somewhat poorly drained	C/D	Very limited	Very limited
Coweta-Talihina complex, 5 to 12 percent slopes	8K	Well drained	D	Very limited	Very limited
Pharoah silt loam, 0 to 1 percent slopes	8K	Somewhat poorly drained	D	Very limited	Very limited
Linker fine sandy loam, 1 to 3 percent slopes	8K	Well drained	C	Very limited	Very limited
Bates loam, 1 to 3 percent slopes	8K	Well drained	C	Somewhat limited	Very limited
Pharoah silt loam, 1 to 3 percent slopes, eroded	7K	Somewhat poorly drained	D	Very limited	Very limited
Verdigris silt loam, 0 to 1 percent slopes, occasionally flooded	7K	Well drained	B	Very limited	Very limited
Porum fine sandy loam, 3 to 5 percent slopes, eroded	6K	Moderately well drained	D	Very limited	Very limited
Karma loamy fine sand, 3 to 8 percent slopes, gullied	6K	Well drained	B	Not 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.

Ultisols

Strongly weathered clay soils of the Southeast. Acidic and naturally low in nutrients. Clay subsoil can slow drainage.

What This Means

Building & Foundations

About 78% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

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.