Garland County, Arkansas
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). 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 Garland County, Arkansas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Bismarck-Carnasaw complex, 20 to 40 percent slopes, very stony | 63K | Somewhat excessively drained | D | Very limited | Very limited |
| Carnasaw-Pirum-Clebit complex, 20 to 40 percent slopes | 54K | Well drained | C | Very limited | Very limited |
| Bismarck-Carnasaw complex, 8 to 20 percent slopes, very stony | 37K | Somewhat excessively drained | D | Very limited | Very limited |
| Water | 36K | D | Not rated | Not rated | |
| Yanush-Avant complex, 40 to 60 percent slopes | 30K | Well drained | B | Very limited | Very limited |
| Bismarck-Sherless-Clebit complex, 12 to 30 percent slopes, very stony | 29K | Well drained | D | Very limited | Very limited |
| Ceda gravelly loam, 0 to 3 percent slopes, frequently flooded | 25K | Well drained | A | Very limited | Very limited |
| Pirum-Clebit-Carnasaw complex, 40 to 60 percent slopes | 17K | Well drained | B | Very limited | Very limited |
| Bismarck-Sherless-Clebit complex, 8 to 12 percent slopes, stony | 14K | Well drained | D | Very limited | Very limited |
| Pirum-Clebit-Carnasaw complex, 20 to 40 percent slopes | 12K | Well drained | B | Very limited | Very limited |
| Bismarck-Clebit-Sherless complex, 3 to 8 percent slopes, stony | 11K | Well drained | D | Very limited | Very limited |
| Carnasaw gravelly silt loam, 3 to 8 percent slopes | 11K | Well drained | C | Somewhat limited | Very limited |
| Bonnerdale fine sandy loam 0-2 percent slopes, occasionally flooded | 10K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Sherless-Clebit complex, 3 to 8 percent slopes | 10K | Well drained | C | Somewhat limited | Very limited |
| Bigfork-Yanush-Carnasaw complex, 40 to 60 percent slopes | 10K | Well drained | C | Very limited | Very limited |
| Yanush-Avant complex, 20 to 40 percent slopes | 9K | Well drained | B | Very limited | Very limited |
| Carnasaw-Pirum complex, 8 to 20 percent slopes | 8K | Well drained | C | Very limited | Very limited |
| Bismarck-Carnasaw complex, 3 to 8 percent slopes | 8K | Somewhat excessively drained | D | Very limited | Very limited |
| Mazarn silt loam, 0 to 2 percent slopes occasionally flooded | 8K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Carnasaw-Clebit complex, 3 to 15 percent slopes | 7K | Well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 86% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 91% 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.