Union and Webster Counties, Kentucky
The most common soil here is Alford, on about 18% of the land: a silt loam, smooth, like flour. Hosmer and Wellston come next.
About 40% of the land drains well, and 24% stays wet for long stretches; groundwater comes within two feet of the surface under 43% of it.
USDA rates 79% of the land very limited for a standard septic drain field, and 79% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 31% of the land floods occasionally or more, and bedrock lies within 40 inches under 4% 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 Union and Webster Counties, Kentucky, 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 B (moderate infiltration). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 and Webster Counties, Kentucky. 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 |
|---|---|---|---|---|---|
| Hosmer silt loam, 2 to 6 percent slopes | 38K | Moderately well drained | C/D | Very limited | Very limited |
| Alford silt loam, 2 to 6 percent slopes | 35K | Well drained | B | Somewhat limited | Somewhat limited |
| Belknap silt loam, 0 to 2 percent slopes, occasionally flooded | 29K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Alford silt loam, 6 to 12 percent slopes, severely eroded | 26K | Well drained | B | Somewhat limited | Somewhat limited |
| Zanesville silt loam, 6 to 12 percent slopes, severely eroded | 26K | Moderately well drained | C/D | Very limited | Very limited |
| Wellston silty clay loam, 12 to 20 percent slopes, severely eroded | 25K | Well drained | B | Very limited | Very limited |
| Alford silt loam, 12 to 20 percent slopes, severely eroded | 17K | Well drained | B | Very limited | Very limited |
| Sharon silt loam, 0 to 2 percent slopes, occasionally flooded | 16K | Moderately well drained | C | Very limited | Very limited |
| Uniontown silt loam, 2 to 6 percent slopes, rarely flooded | 15K | Moderately well drained | C | Very limited | Very limited |
| Water | 15K | Not rated | Not rated | ||
| Wakeland silt loam, 0 to 2 percent slopes, occasionally flooded | 15K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Wilbur silt loam, 0 to 2 percent slopes, occasionally flooded | 15K | Moderately well drained | C | Very limited | Very limited |
| Alford silt loam, 6 to 12 percent slopes, eroded | 14K | Well drained | B | Somewhat limited | Somewhat limited |
| Patton silt loam, overwash, 0 to 2 percent slopes, occasionally flooded | 13K | Poorly drained | B/D | Very limited | Very limited |
| Frondorf silt loam, 20 to 30 percent slopes | 10K | Well drained | C | Very limited | Very limited |
| McGary silt loam, 0 to 2 percent slopes, rarely flooded | 10K | Moderately well drained | C/D | Very limited | Very limited |
| Patton silt loam, 0 to 2 percent slopes, rarely flooded | 9K | Poorly drained | C/D | Very limited | Very limited |
| Nolin silty clay loam | 9K | Well drained | B | Very limited | Very limited |
| Hosmer silt loam, 6 to 12 percent slopes, eroded | 8K | Moderately well drained | D | Very limited | Very limited |
| Karnak silt loam, overwash, 0 to 2 percent slopes, occasionally flooded | 7K | Poorly drained | C/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
About 79% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 79% 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.