Shawnee County, Kansas
The dominant drainage class is Moderately well 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 Shawnee County, Kansas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Martin silty clay loam, 3 to 7 percent slopes | 52K | Moderately well drained | C/D | Very limited | Very limited |
| Pawnee clay loam, 4 to 8 percent slopes, eroded | 44K | Moderately well drained | D | Very limited | Very limited |
| Sogn-Vinland complex, 3 to 25 percent slopes | 31K | Somewhat excessively drained | D | Very limited | Very limited |
| Ladysmith silty clay loam, 1 to 3 percent slopes | 29K | Somewhat poorly drained | D | Very limited | Very limited |
| Martin silty clay loam, 3 to 7 percent slopes, eroded | 13K | Moderately well drained | C/D | Very limited | Very limited |
| Reading silty clay loam, rarely flooded | 13K | Well drained | C | Very limited | Very limited |
| Martin silty clay loam, 1 to 3 percent slopes | 10K | Moderately well drained | C/D | Very limited | Very limited |
| Labette silty clay loam, 3 to 7 percent slopes | 8K | Well drained | D | Very limited | Very limited |
| Fluvents, frequently flooded | 8K | Not rated | Not rated | ||
| Martin-Kennebec complex, 0 to 12 percent slopes | 7K | Moderately well drained | C/D | Very limited | Very limited |
| Martin silty clay loam, 7 to 12 percent slopes | 7K | Moderately well drained | C/D | Very limited | Very limited |
| Muscotah silty clay loam, very rarely flooded | 7K | Somewhat poorly drained | D | Very limited | Very limited |
| Eudora-Bismarckgrove silt loams, rarely flooded | 7K | Well drained | B | Very limited | Very limited |
| Kennebec silt loam, frequently flooded | 7K | Moderately well drained | B | Very limited | Very limited |
| Rossville silt loam, very rarely flooded | 7K | Well drained | B | Very limited | Somewhat limited |
| Labette silty clay loam, 1 to 3 percent slopes | 6K | Well drained | D | Very limited | Very limited |
| Pawnee clay loam, 1 to 4 percent slopes | 6K | Moderately well drained | D | Very limited | Very limited |
| Vinland-Rock outcrop complex, 15 to 45 percent slopes | 6K | Somewhat excessively drained | D | Very limited | Very limited |
| Eudora-Bismarckgrove silt loams, occasionally flooded | 5K | Well drained | B | Very limited | Very limited |
| Kennebec silt loam, occasionally flooded | 5K | Moderately well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 97% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 94% 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.