Cobb County, Georgia

Survey Area GA067• Georgia

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Cobb County, Georgia. 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
Gwinnett clay loam, 6 to 10 percent slopes, severely eroded	13K	Well drained	B	Not limited	Somewhat limited
Madison and Pacolet soils, 10 to 15 percent slopes, severely eroded	13K	Well drained	B	Somewhat limited	Somewhat limited
Madison clay loam, 6 to 10 percent slopes, severely eroded	12K	Well drained	B	Not limited	Somewhat limited
Madison and Pacolet soils, 15 to 25 percent slopes, eroded	12K	Well drained	B	Very limited	Very limited
Cartecay fine sandy loam, 0 to 2 percent slopes, frequently flooded	10K	Somewhat poorly drained	A/D	Very limited	Very limited
Madison sandy loam, 2 to 6 percent slopes, moderately eroded	9K	Well drained	B	Not limited	Somewhat limited
Appling sandy loam, 6 to 10 percent slopes	9K	Well drained	B	Not limited	Somewhat limited
Gwinnett clay loam, 10 to 15 percent slopes, severely eroded	8K	Well drained	B	Somewhat limited	Somewhat limited
Toccoa sandy loam, 0 to 2 percent slopes, occasionally flooded	8K	Moderately well drained	A	Very limited	Very limited
Cecil sandy loam, 2 to 6 percent slopes, moderately eroded	7K	Well drained	B	Not limited	Somewhat limited
Appling sandy loam, 2 to 6 percent slopes	7K	Well drained	B	Not limited	Somewhat limited
Gwinnett clay loam, 2 to 6 percent slopes, severely eroded	6K	Well drained	B	Not limited	Somewhat limited
Musella and Pacolet stony soils, 10 to 45 percent slopes	6K	Well drained	D	Very limited	Very limited
Madison sandy loam, 6 to 10 percent slopes, eroded	6K	Well drained	B	Not limited	Somewhat limited
Cecil sandy loam, 6 to 10 percent slopes, moderately eroded	6K	Well drained	B	Not limited	Somewhat limited
Madison sandy loam, 10 to 15 percent slopes, eroded	5K	Well drained	B	Somewhat limited	Somewhat limited
Gwinnett clay loam, 15 to 25 percent slopes, eroded	4K	Well drained	B	Very limited	Very limited
Madison clay loam, 15 to 25 percent slopes, severely eroded	4K	Well drained	B	Very limited	Very limited
Pacolet sandy clay loam, 6 to 10 percent slopes, severely eroded	4K	Well drained	B	Not limited	Somewhat limited
Louisa soils, 25 to 60 percent slopes	4K	Somewhat excessively drained	D	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.

Entisols

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

Inceptisols

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

Alfisols

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

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 31% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.

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.