Le Flore County, Oklahoma

Survey Area OK079• 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 Ultisols — strongly weathered soils with clay-enriched subsoils, common in warm humid climates. 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 Le Flore 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
Carnasaw stony loam, 15 to 35 percent slopes, extremely stony	70K	Well drained	C	Very limited	Very limited
Carnasaw stony loam, 4 to 15 percent slopes	66K	Well drained	C	Very limited	Very limited
Carnasaw-Pirum complex, 15 to 35 percent slopes	63K	Well drained	C	Very limited	Very limited
Bengal-Clebit association, 3 to 15 percent	58K	Well drained	C	Very limited	Very limited
Neff silt loam, 0 to 1 percent slopes, occasionally flooded	53K	Moderately well drained	C	Very limited	Very limited
Stigler silt loam, 1 to 3 percent slopes	49K	Moderately well drained	D	Very limited	Very limited
Pirum-Octavia-Panama association, 30 to 50 percent slopes	38K	Well drained	C	Very limited	Very limited
Kenn-Ceda complex, 0 to 2 percent slopes, occasionally flooded	36K	Well drained	B	Very limited	Very limited
Bengal-Octavia-Tuskahoma complex, 4 to 20 percent slopes	36K	Well drained	C	Very limited	Very limited
Bengal-Pirum-Clebit complex, 5 to 15 percent slopes	34K	Well drained	D	Very limited	Very limited
Neff and Rexor soils, 0 to 1 percent slopes, frequently flooded	30K	Moderately well drained	C/D	Very limited	Very limited
Carnasaw-Octavia complex, 15 to 35 percent slopes, very rocky	28K	Well drained	C	Very limited	Very limited
Wister silt loam, 1 to 3 percent slopes	25K	Moderately well drained	D	Very limited	Very limited
Sherless-Bengal complex, 3 to 15 percent slopes	24K	Well drained	C	Somewhat limited	Very limited
Carnasaw-Clebit complex, 5 to 15 percent slopes	23K	Well drained	C	Very limited	Very limited
Carnasaw-Octavia complex, 35 to 50 percent slopes	22K	Well drained	C	Very limited	Very limited
Pirum-Clebit complex, 3 to 5 percent slopes	21K	Well drained	C	Very limited	Very limited
Pirum-Carnasaw-Caston complex, 35 to 60 percent slopes, cool	20K	Well drained	C	Very limited	Very limited
Shermore fine sandy loam, 3 to 5 percent slopes, moderately eroded	19K	Moderately well drained	C	Very limited	Very limited
Octavia-Carnasaw complex, 15 to 35 percent slopes, cool	18K	Well drained	B	Very 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.

Ultisols

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

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.

Mollisols

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

Vertisols

High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.

What This Means

Building & Foundations

About 96% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 100% 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.