Delaware County, Indiana
The dominant drainage class is Somewhat poorly drained and the dominant hydrologic group is C/D (varies with drainage). 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 Delaware County, Indiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Pewamo silty clay loam, 0 to 1 percent slopes | 44K | Very poorly drained | C/D | Very limited | Very limited |
| Blount-Del Rey silt loams, 0 to 1 percent slopes | 43K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Crosby silt loam, New Castle Till Plain, 0 to 2 percent slopes | 24K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Treaty silty clay loam, 0 to 1 percent slopes | 16K | Poorly drained | B/D | Very limited | Very limited |
| Glynwood silt loam, 1 to 4 percent slopes, eroded | 15K | Moderately well drained | D | Very limited | Very limited |
| Blount silt loam, end moraine, 0 to 2 percent slopes | 9K | Somewhat poorly drained | D | Very limited | Very limited |
| Miamian silt loam, New Castle Till Plain, 2 to 6 percent slopes, eroded | 8K | Well drained | C | Very limited | Very limited |
| Urban land-Blount-Pewamo complex, 0 to 2 percent slopes | 7K | C/D | Very limited | Very limited | |
| Sloan silt loam, 0 to 2 percent slopes, frequently flooded | 6K | Very poorly drained | B/D | Very limited | Very limited |
| Glynwood silt loam, end moraine, 1 to 4 percent slopes, eroded | 5K | Moderately well drained | D | Very limited | Very limited |
| Urban land-Wawaka-Miami complex, 1 to 6 percent slopes | 5K | C | Not rated | Very limited | |
| Millgrove silty clay loam, 0 to 1 percent slopes | 4K | Very poorly drained | B/D | Very limited | Very limited |
| Wawaka silt loam, 0 to 2 percent slopes | 4K | Well drained | C | Somewhat limited | Very limited |
| Urban land-Crosby-Treaty complex, 0 to 2 percent slopes | 4K | Very limited | Very limited | ||
| Pella silty clay loam, 0 to 1 percent slopes | 4K | Poorly drained | B/D | Very limited | Very limited |
| Miami loam, 2 to 6 percent slopes, eroded | 4K | Moderately well drained | C | Very limited | Very limited |
| Water | 3K | Not rated | Not rated | ||
| Digby-Haney silt loams, 0 to 1 percent slopes | 3K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Williamstown silt loam, 0 to 2 percent slopes | 3K | Moderately well drained | C/D | Very limited | Very limited |
| Southwest silt loam, 0 to 1 percent slopes | 3K | Poorly drained | C/D | Very limited | Very limited |
What This Means
Building & Foundations
About 94% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 98% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.