Spink County, South Dakota
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. 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 Spink County, South Dakota. 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 |
|---|---|---|---|---|---|
| Great Bend-Beotia silt loams, 0 to 2 percent slopes | 60K | Well drained | B | Somewhat limited | Somewhat limited |
| Nahon-Aberdeen-Exline silt loams, 0 to 2 percent slopes | 52K | Moderately well drained | C | Somewhat limited | Very limited |
| Aberdeen-Nahon silty clay loams, 0 to 2 percent slopes | 50K | Moderately well drained | C | Somewhat limited | Very limited |
| Harmony-Aberdeen silty clay loams, 0 to 2 percent slopes | 46K | Moderately well drained | C | Somewhat limited | Very limited |
| Forman-Cresbard loams, 0 to 3 percent slopes | 36K | Well drained | C | Somewhat limited | Very limited |
| Hand-Ethan-Bonilla loams, 1 to 6 percent slopes | 27K | Well drained | B | Not limited | Very limited |
| Beadle-Stickney complex, 0 to 2 percent slopes | 26K | Well drained | C | Somewhat limited | Very limited |
| Harmony-Beotia silt loams, 0 to 2 percent slopes | 23K | Moderately well drained | C | Somewhat limited | Very limited |
| Max-Arnegard-Zahl loams, 0 to 6 percent slopes | 23K | Well drained | B | Somewhat limited | Somewhat limited |
| Great Bend-Zell silt loams, 2 to 6 percent slopes | 22K | Well drained | C | Somewhat limited | Very limited |
| Cresbard-Cavour-Heil complex, 0 to 3 percent slopes | 19K | Moderately well drained | C | Very limited | Very limited |
| Forman-Buse-Aastad loams, 1 to 6 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Cavour-Ferney loams, 0 to 3 percent slopes | 17K | Moderately well drained | C | Somewhat limited | Somewhat limited |
| Aberdeen-Nahon-Heil silt loams, 0 to 2 percent slopes | 16K | Moderately well drained | C | Somewhat limited | Very limited |
| Exline-Heil silt loams, 0 to 2 percent slopes | 16K | Somewhat poorly drained | D | Very limited | Very limited |
| Stickney-Dudley-Hoven silt loams, 0 to 2 percent slopes | 15K | Moderately well drained | D | Somewhat limited | Very limited |
| Houdek-Stickney complex, 0 to 2 percent slopes | 14K | Well drained | C | Somewhat limited | Very limited |
| Ranslo-Harriet loams, 0 to 2 percent slopes, occasionally flooded | 14K | Somewhat poorly drained | D | Very limited | Very limited |
| Kranzburg-Cresbard silt loams, 0 to 2 percent slopes | 14K | Well drained | C | Somewhat limited | Very limited |
| Exline-Aberdeen-Nahon silt loams, 0 to 2 percent slopes | 14K | Somewhat poorly 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.
What This Means
Building & Foundations
Most soils are generally favorable for residential construction. Standard foundations are usually viable, though site-specific evaluation is always recommended.
Septic Systems
About 81% 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
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.