Gallia County, Ohio
The most common soil here is Gilpin, on about 21% of the land: a channery silt loam, smooth, like flour. Upshur and Steinsburg come next.
About 71% of the land drains well, and 4% stays wet for long stretches; groundwater comes within two feet of the surface under 11% of it.
USDA rates 99% of the land very limited for a standard septic drain field, and 94% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 8% of the land floods occasionally or more, and bedrock lies within 40 inches under 73% of it.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Gallia County, Ohio, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Entisols — young soils with little profile development, often on floodplains or steep slopes. 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 Gallia County, Ohio. 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 |
|---|---|---|---|---|---|
| Gilpin-Upshur-Steinsburg association, steep | 44K | Well drained | C | Very limited | Very limited |
| Upshur-Gilpin complex, 25 to 50 percent slopes | 39K | Well drained | C | Very limited | Very limited |
| Upshur-Gilpin complex, 15 to 25 percent slopes, eroded | 25K | Well drained | C | Very limited | Very limited |
| Rarden-Steinsburg association, steep | 18K | Moderately well drained | D | Very limited | Very limited |
| Steinsburg-Clymer association, steep | 10K | Well drained | B | Very limited | Very limited |
| Upshur-Gilpin complex, 8 to 15 percent slopes, eroded | 10K | Well drained | C | Very limited | Very limited |
| Gilpin-Rarden association, steep | 10K | Well drained | C | Very limited | Very limited |
| Berks-Upshur association, very steep | 9K | Well drained | B | Very limited | Very limited |
| Vandalia-Gilpin complex, 15 to 25 percent slopes, severely eroded | 8K | Well drained | C | Very limited | Very limited |
| Guernsey-Gilpin association, steep | 7K | Moderately well drained | C | Very limited | Very limited |
| Omulga silt loam, 2 to 6 percent slopes | 7K | Moderately well drained | C | Very limited | Very limited |
| Lily-Rarden complex, 15 to 25 percent slopes | 6K | Moderately well drained | D | Very limited | Very limited |
| Rarden-Gilpin silt loams, 8 to 15 percent slopes, eroded | 5K | Moderately well drained | D | Very limited | Very limited |
| Rarden-Gilpin silt loams, 15 to 25 percent slopes, eroded | 5K | Moderately well drained | D | Very limited | Very limited |
| Lily silt loam, 8 to 15 percent slopes | 5K | Well drained | B | Somewhat limited | Very limited |
| Gallipolis silt loam, 1 to 6 percent slopes | 4K | Moderately well drained | C | Somewhat limited | Very limited |
| Vandalia silty clay loam, 15 to 25 percent slopes, severely eroded | 4K | Well drained | C | Very limited | Very limited |
| Lily-Upshur complex, 15 to 25 percent slopes | 4K | Well drained | B | Very limited | Very limited |
| Monongahela loam, 8 to 15 percent slopes | 4K | Moderately well drained | D | Very limited | Very limited |
| Chagrin silt loam, 0 to 3 percent slopes, frequently flooded | 4K | Well drained | B | 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
About 94% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 99% 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.