Kewaunee County, Wisconsin
The most common soil here is Hortonville, on about 21% of the land: a fine sandy loam, gritty and crumbly. Kewaunee and Symco come next.
About 65% of the land drains well, and 34% stays wet for long stretches; groundwater comes within two feet of the surface under 42% of it.
USDA rates 93% of the land very limited for a standard septic drain field, and 43% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 13% of the land floods occasionally or more, and bedrock lies within 40 inches under 5% 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 Kewaunee County, Wisconsin, 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 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 Kewaunee County, Wisconsin. 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 |
|---|---|---|---|---|---|
| Hortonville silt loam, 2 to 6 percent slopes | 32K | Well drained | C | Not limited | Very limited |
| Symco silt loam, 0 to 3 percent slopes | 13K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Carbondale muck, 0 to 2 percent slopes | 11K | Very poorly drained | A/D | Very limited | Very limited |
| Kewaunee silt loam, 2 to 6 percent slopes, eroded | 11K | Well drained | D | Somewhat limited | Very limited |
| Hortonville-Symco silt loams, 1 to 6 percent slopes | 10K | Well drained | C | Not limited | Very limited |
| Waymor silt loam, 1 to 6 percent slopes | 10K | Well drained | C | Somewhat limited | Very limited |
| Hortonville silt loam, 6 to 12 percent slopes, eroded | 9K | Well drained | C | Somewhat limited | Very limited |
| Kewaunee silty clay loam, 2 to 6 percent slopes, eroded | 8K | Well drained | D | Somewhat limited | Very limited |
| Onaway-Ossineke fine sandy loams, moraine, 1 to 6 percent slopes | 7K | Well drained | C | Not limited | Somewhat limited |
| Manawa silt loam, 0 to 3 percent slopes | 7K | Somewhat poorly drained | D | Very limited | Very limited |
| Casco sandy loam, 2 to 6 percent slopes | 7K | Somewhat excessively drained | B | Not limited | Very limited |
| Cathro muck | 6K | Very poorly drained | B/D | Very limited | Very limited |
| Pella silt loam, 0 to 2 percent slopes | 5K | Poorly drained | B/D | Very limited | Very limited |
| Kewaunee silty clay loam, 6 to 12 percent slopes, eroded | 4K | Well drained | D | Somewhat limited | Somewhat limited |
| Solona silt loam, 0 to 3 percent slopes | 4K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Waymor silt loam, 6 to 12 percent slopes, eroded | 3K | Well drained | C | Somewhat limited | Very limited |
| Lamartine silt loam, 0 to 3 percent slopes | 3K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Kolberg silt loam, 2 to 6 percent slopes | 3K | Well drained | D | Very limited | Very limited |
| Markey muck, 0 to 2 percent slopes | 3K | Very poorly drained | A/D | Very limited | Very limited |
| Kewaunee-Manawa silt loams, 1 to 6 percent slopes | 3K | 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 43% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 93% 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
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.