Caddo County, Oklahoma

Survey Area OK015• Oklahoma

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Caddo 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
Noble fine sandy loam, 3 to 8 percent slopes	74K	Well drained	A	Not limited	Very limited
Darnell-Noble association, 3 to 12 percent slopes	66K	Well drained	D	Very limited	Very limited
Pond Creek fine sandy loam, 1 to 3 percent slopes	50K	Well drained	C	Somewhat limited	Very limited
Pond Creek silt loam, 1 to 3 percent slopes	41K	Well drained	B	Somewhat limited	Somewhat limited
Ironmound-Dill complex, 3 to 12 percent slopes	34K	Well drained	D	Very limited	Very limited
Dougherty-Eufaula complex, 3 to 8 percent slopes	31K	Well drained	B	Not limited	Very limited
Minco very fine sandy loam, 3 to 8 percent slopes	29K	Well drained	B	Not limited	Somewhat limited
Port silt loam, 0 to 1 percent slopes, occasionally flooded	25K	Well drained	B	Very limited	Very limited
Tillman silty clay loam, 1 to 3 percent slopes	24K	Well drained	C	Somewhat limited	Very limited
Ironmound-Nash complex, 5 to 12 percent slopes	24K	Well drained	D	Very limited	Very limited
Binger fine sandy loam, 3 to 5 percent slopes	23K	Well drained	C	Somewhat limited	Very limited
Grant loam, 3 to 5 percent slopes	21K	Well drained	B	Not limited	Somewhat limited
Binger fine sandy loam, 5 to 8 percent slopes, eroded	19K	Well drained	C	Somewhat limited	Very limited
Minco silt loam, 1 to 3 percent slopes	18K	Well drained	B	Not limited	Somewhat limited
Darnell-Noble association, 12 to 30 percent slopes	17K	Well drained	D	Very limited	Very limited
Pond Creek silt loam, 0 to 1 percent slopes	17K	Well drained	B	Somewhat limited	Somewhat limited
Binger and Grant soils, 3 to 8 percent slopes, severely eroded	17K	Well drained	C	Somewhat limited	Very limited
Grant loam, 1 to 3 percent slopes	16K	Well drained	B	Not limited	Somewhat limited
Gracemont and Ezell soils, 0 to 1 percent slopes, frequently flooded	15K	Somewhat poorly drained	A	Very limited	Very limited
Noble fine sandy loam, 1 to 3 percent slopes	13K	Well drained	A	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.

Inceptisols

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

What This Means

Building & Foundations

About 31% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 75% 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.