Jackson County Area, South Dakota, Northern Part
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 Jackson County Area, South Dakota, Northern Part.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Pierre-Samsil clays, 6 to 15 percent slopes | 54K | Well drained | D | Very limited | Very limited |
| Samsil-Pierre clays, 15 to 25 percent slopes | 37K | Well drained | D | Very limited | Very limited |
| Promise-Pierre clays, 6 to 9 percent slopes | 27K | Well drained | D | Very limited | Very limited |
| Promise-Pierre clays, 3 to 6 percent slopes | 24K | Well drained | D | Very limited | Very limited |
| Razor-Midway silty clay loams, 6 to 15 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Samsil clay, 15 to 45 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Cactusflat-Weta complex, 1 to 6 percent slopes | 14K | Well drained | C | Very limited | Very limited |
| Pierre clay, 6 to 9 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Nunn loam, 3 to 6 percent slopes | 11K | Well drained | C | Very limited | Very limited |
| Hisle silt loam, 0 to 6 percent slopes | 10K | Well drained | D | Very limited | Very limited |
| Badland | 10K | Excessively drained | D | Very limited | Very limited |
| Interior loam, channeled, 0 to 6 percent slopes, flooded | 10K | Well drained | B | Very limited | Very limited |
| Interior, occasionally flooded-Cedarpass-Denby complex, 0 to 6 percent slopes | 9K | Well drained | B | Very limited | Very limited |
| Blackpipe-Wortman silt loams, 3 to 9 percent slopes | 9K | Well drained | C | Somewhat limited | Very limited |
| Arvada loam | 9K | Well drained | D | Very limited | Very limited |
| Nunn-Beckton loams, 2 to 6 percent slopes | 9K | Well drained | C | Very limited | Very limited |
| Nunn loam, 6 to 9 percent slopes | 7K | Well drained | C | Very limited | Very limited |
| Cedarpass-Denby complex, 0 to 3 percent slopes | 7K | Well drained | B | Not limited | Very limited |
| Wendte clay, channeled, occasionally flooded | 7K | Moderately well drained | D | Very limited | Very limited |
| Norrest-Wanblee complex, 2 to 9 percent slopes | 7K | Well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 94% 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.