DeKalb County, Georgia
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 DeKalb County, Georgia.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Cecil-Urban land complex, 2 to 10 percent slopes | 29K | Well drained | B | Not limited | Somewhat limited |
| Pacolet-Urban land complex, 10 to 25 percent slopes | 25K | Well drained | B | Very limited | Very limited |
| Urban land | 22K | Not rated | Not rated | ||
| Pacolet sandy loam, 2 to 10 percent slopes | 10K | Well drained | B | Not limited | Somewhat limited |
| Cartecay silt loam, frequently flooded | 7K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Pacolet sandy loam, 15 to 30 percent slopes | 6K | Well drained | B | Very limited | Very limited |
| Pacolet sandy loam, 10 to 15 percent slopes | 6K | Well drained | B | Somewhat limited | Somewhat limited |
| Toccoa sandy loam, 0 to 2 percent slopes, frequently flooded | 5K | Moderately well drained | A | Very limited | Very limited |
| Ashlar-Wedowee complex, 2 to 10 percent slopes | 5K | Well drained | B | Very limited | Very limited |
| Ashlar-Wedowee complex, 10 to 25 percent slopes | 5K | Well drained | B | Very limited | Very limited |
| Gwinnett sandy loam, 6 to 10 percent slopes | 3K | Well drained | B | Not limited | Somewhat limited |
| Cecil sandy loam, 2 to 6 percent slopes | 3K | Well drained | B | Not limited | Somewhat limited |
| Madison sandy loam, 15 to 30 percent slopes | 2K | Well drained | B | Very limited | Very limited |
| Madison sandy loam, 6 to 10 percent slopes | 2K | Well drained | B | Not limited | Somewhat limited |
| Cecil sandy loam, 6 to 10 percent slopes | 2K | Well drained | B | Not limited | Somewhat limited |
| Rock outcrop | 2K | Not rated | Not rated | ||
| Water | 2K | Not rated | Not rated | ||
| Gwinnett sandy loam, 10 to 15 percent slopes | 2K | Well drained | B | Somewhat limited | Somewhat limited |
| Ashlar sandy loam, very rocky, 6 to 15 percent slopes | 2K | Well drained | B | Very limited | Very limited |
| Madison sandy loam, 10 to 15 percent slopes | 2K | Well drained | B | Somewhat limited | Somewhat limited |
What This Means
Building & Foundations
About 40% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 40% 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.