Union County, Ohio
The dominant drainage class is Somewhat poorly 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 Union County, Ohio.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Blount silt loam, ground moraine, 0 to 2 percent slopes | 55K | Somewhat poorly drained | D | Very limited | Very limited |
| Wetzel silty clay loam | 27K | Poorly drained | C/D | Very limited | Very limited |
| Pewamo silty clay loam, 0 to 1 percent slopes | 24K | Very poorly drained | C/D | Very limited | Very limited |
| Blount silt loam, ground moraine, 2 to 4 percent slopes | 23K | Somewhat poorly drained | D | Very limited | Very limited |
| Blount silt loam, end moraine, 2 to 4 percent slopes | 20K | Somewhat poorly drained | D | Very limited | Very limited |
| Brookston silty clay loam, fine texture, 0 to 2 percent slopes | 18K | Poorly drained | C/D | Very limited | Very limited |
| Blount silt loam, end moraine, 0 to 2 percent slopes | 17K | Somewhat poorly drained | D | Very limited | Very limited |
| Glynwood silt loam, ground moraine, 2 to 6 percent slopes | 10K | Moderately well drained | D | Very limited | Very limited |
| Crosby silt loam, Southern Ohio Till Plain, 0 to 2 percent slopes | 9K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Glynwood silt loam, end moraine, 2 to 6 percent slopes | 9K | Moderately well drained | D | Very limited | Very limited |
| Nappanee silt loam, 2 to 6 percent slopes | 9K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Paulding silty clay | 8K | Very poorly drained | D | Very limited | Very limited |
| Nappanee silt loam, 0 to 2 percent slopes | 7K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Glynwood clay loam, 6 to 12 percent slopes, eroded | 3K | Moderately well drained | D | Very limited | Very limited |
| Genesee silt loam, 0 to 2 percent slopes, occasionally flooded | 3K | Well drained | C | Very limited | Very limited |
| St. Clair silt loam, 2 to 6 percent slopes | 3K | Moderately well drained | D | Very limited | Very limited |
| Glynwood clay loam, ground moraine, 6 to 12 percent slopes, eroded | 3K | Moderately well drained | D | Very limited | Very limited |
| Fox silt loam, till plain, 0 to 2 percent slopes | 2K | Well drained | B | Not limited | Very limited |
| Sloan silty clay loam, 0 to 1 percent slopes, frequently flooded | 2K | Very poorly drained | B/D | Very limited | Very limited |
| Lippincott silty clay loam, 0 to 2 percent slopes | 2K | Very poorly drained | B/D | Very limited | Very limited |
What This Means
Building & Foundations
About 99% 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.