Grant County, Arkansas

Survey Area AR053• Arkansas

The dominant drainage class is Moderately 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 Grant County, Arkansas. 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
Stough fine sandy loam, 1 to 3 percent slopes	49K	Somewhat poorly drained	C/D	Very limited	Very limited
Warnock fine sandy loam, 1 to 7 percent slopes	48K	Moderately well drained	C	Somewhat limited	Very limited
Guyton silt loam, 0 to 1 percent slopes, frequently flooded	43K	Poorly drained	C/D	Very limited	Very limited
Smithton fine sandy loam, 0 to 2 percent slopes	35K	Poorly drained	C/D	Very limited	Very limited
Sacul fine sandy loam, 1 to 8 percent slopes	28K	Moderately well drained	C	Somewhat limited	Very limited
Ouachita silt loam, 0 to 2 percent slopes, frequently flooded	21K	Well drained	C	Very limited	Very limited
Sawyer very fine sandy loam, 1 to 8 percent slopes	21K	Moderately well drained	C	Very limited	Very limited
Sardis silt loam, 0 to 1 percent slopes, frequently flooded	18K	Somewhat poorly drained	C	Very limited	Very limited
Amy silt loam, 0 to 2 percent slopes	16K	Poorly drained	B/D	Very limited	Very limited
Pikeville fine sandy loam, 1 to 8 percent slopes	16K	Well drained	B	Not limited	Very limited
Bibb fine sandy loam, 0 to 1 percent slopes, frequently flooded	15K	Poorly drained	B/D	Very limited	Very limited
Una silty clay loam, 0 to 1 percent slopes, frequently flooded	12K	Poorly drained	D	Very limited	Very limited
Sacul fine sandy loam, 8 to 15 percent slopes	11K	Moderately well drained	D	Somewhat limited	Very limited
Sacul gravelly fine sandy loam, 1 to 8 percent slopes	10K	Moderately well drained	C	Somewhat limited	Very limited
Sacul gravelly fine sandy loam, 15 to 35 percent slopes	10K	Moderately well drained	C	Very limited	Very limited
Sacul fine sandy loam, 15 to 35 percent slopes	9K	Moderately well drained	C	Very limited	Very limited
Rosalie loamy fine sand, 1 to 8 percent slopes	9K	Well drained	A	Somewhat limited	Very limited
Adaton silt loam, 0 to 2 percent slopes	8K	Poorly drained	C/D	Very limited	Very limited
Gurdon silt loam, 1 to 3 percent slopes	5K	Somewhat poorly drained	B/D	Very limited	Very limited
Sacul gravelly fine sandy loam, 8 to 15 percent slopes	4K	Moderately 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.

Ultisols

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

Inceptisols

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

Vertisols

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

Alfisols

Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

What This Means

Building & Foundations

About 67% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, 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.