Miami County, Ohio
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 Miami County, Ohio.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Crosby silt loam, Southern Ohio Till Plain, 0 to 2 percent slopes | 65K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Brookston silty clay loam, fine texture, 0 to 2 percent slopes | 36K | Poorly drained | C/D | Very limited | Very limited |
| Crosby silt loam, Southern Ohio Till Plain, 2 to 6 percent slopes | 21K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Miamian silt loam, 2 to 6 percent slopes | 16K | Well drained | C | Very limited | Very limited |
| Celina silt loam, 2 to 6 percent slopes | 14K | Moderately well drained | C/D | Very limited | Very limited |
| Miamian silt loam, 6 to 12 percent slopes, eroded | 8K | Well drained | C | Somewhat limited | Very limited |
| Miamian silt loam, 2 to 6 percent slopes, eroded | 7K | Well drained | C | Somewhat limited | Very limited |
| Milton silt loam, 2 to 6 percent slopes | 5K | Well drained | C | Very limited | Very limited |
| Eldean loam, 2 to 6 percent slopes | 5K | Well drained | B | Not limited | Very limited |
| Eldean loam, 0 to 2 percent slopes | 5K | Well drained | B | Not limited | Very limited |
| Genesee silt loam, 0 to 2 percent slopes, occasionally flooded | 5K | Well drained | B | Very limited | Very limited |
| Randolph silt loam, 0 to 2 percent slopes | 4K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Blount silt loam, end moraine, 2 to 4 percent slopes | 4K | Somewhat poorly drained | D | Very limited | Very limited |
| Milton silt loam, 0 to 2 percent slopes | 4K | Well drained | C | Very limited | Very limited |
| Miamian silt loam, limestone substratum, 0 to 2 percent slopes | 3K | Well drained | C | Somewhat limited | Very limited |
| Millsdale silty clay loam, 0 to 2 percent slopes | 3K | Very poorly drained | C/D | Very limited | Very limited |
| Shoals silt loam, 0 to 2 percent slopes, frequently flooded, brief duration | 3K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Ross silt loam, 0 to 2 percent slopes, occasionally flooded | 3K | Well drained | B | Very limited | Very limited |
| Odell silt loam, 0 to 2 percent slopes | 3K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Miamian silt loam, limestone substratum, 2 to 6 percent slopes | 3K | Well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 86% 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 100% 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.