Madison County, Kentucky
The most common soil here is Lowell, on about 8% of the land: a silt loam, smooth, like flour. Faywood and Culleoka come next.
About 79% of the land drains well, and 7% stays wet for long stretches; groundwater comes within two feet of the surface under 16% of it.
USDA rates 97% of the land very limited for a standard septic drain field, and 81% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 5% of the land floods occasionally or more, and bedrock lies within 40 inches under 60% 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 Madison County, 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 D (very slow infiltration, high runoff). 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 Madison County, 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 |
|---|---|---|---|---|---|
| Cynthiana-Rock outcrop complex, 12 to 30 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Lowell-Faywood silt loams, 6 to 12 percent slopes | 15K | Well drained | C | Very limited | Very limited |
| Faywood silt loam, 12 to 30 percent slopes | 14K | Well drained | C | Very limited | Very limited |
| Brassfield silt loam, 12 to 30 percent slopes | 12K | Well drained | C | Very limited | Very limited |
| Lawrence silt loam | 11K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Mercer silt loam, 2 to 6 percent slopes | 9K | Moderately well drained | D | Very limited | Very limited |
| Fairmount-Rock outcrop complex, 30 to 60 percent slopes | 9K | Well drained | D | Very limited | Very limited |
| Culleoka flaggy silt loam, 30 to 50 percent slopes | 9K | Well drained | B | Very limited | Very limited |
| Culleoka flaggy silt loam, 20 to 30 percent slopes | 8K | Well drained | B | Very limited | Very limited |
| Eden flaggy clay, 20 to 30 percent slopes, eroded | 8K | Well drained | D | Very limited | Very limited |
| Eden flaggy clay, 30 to 50 percent slopes, eroded | 7K | Well drained | D | Very limited | Very limited |
| Lowell-Faywood silt loams, 12 to 20 percent slopes | 7K | Well drained | C | Very limited | Very limited |
| Weikert channery silt loam, 40 to 80 percent slopes | 7K | Somewhat excessively drained | D | Very limited | Very limited |
| Shelbyville silt loam, 2 to 6 percent slopes | 7K | Well drained | C | Somewhat limited | Very limited |
| Beasley silt loam, 6 to 12 percent slopes | 6K | Well drained | C | Somewhat limited | Very limited |
| Mercer silt loam, 6 to 12 percent slopes | 6K | Moderately well drained | D | Very limited | Very limited |
| Caleast silt loam, 6 to 12 percent slopes | 6K | Well drained | C | Somewhat limited | Very limited |
| Otway silty clay, 12 to 30 percent slopes (shrouts) | 6K | Well drained | D | Very limited | Very limited |
| Colyer shaly silty clay loam, 12 to 50 percent slopes, severely eroded | 5K | Well drained | D | Very limited | Very limited |
| Caleast silt loam, 2 to 6 percent slopes | 5K | Well drained | C | Somewhat 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 81% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas. A geotechnical assessment is recommended before building.
Septic Systems
About 97% 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.