Cass County, Missouri
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 Cass County, Missouri.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Kenoma silt loam, 4 to 7 percent slopes | 44K | Moderately well drained | D | Very limited | Very limited |
| Kenoma silt loam, 1 to 3 percent slopes | 35K | Moderately well drained | D | Very limited | Very limited |
| Arisburg silt loam, 1 to 5 percent slopes | 31K | Somewhat poorly drained | C | Very limited | Very limited |
| Greenton silty clay loam, 5 to 9 percent slopes | 31K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Haig silt loam, 0 to 2 percent slopes | 29K | Poorly drained | D | Very limited | Very limited |
| Sampsel silty clay loam, 2 to 5 percent slopes | 21K | Poorly drained | C/D | Very limited | Very limited |
| Snead-Rock outcrop complex, warm, 5 to 14 percent slopes | 20K | Moderately well drained | D | Very limited | Very limited |
| Oska silty clay loam, 5 to 9 percent slopes | 19K | Well drained | D | Very limited | Very limited |
| Verdigris silt loam, 0 to 1 percent slopes, occasionally flooded | 18K | Well drained | B | Very limited | Very limited |
| Deepwater silt loam, 5 to 9 percent slopes | 16K | Moderately well drained | C | Somewhat limited | Very limited |
| Weller silt loam, 5 to 9 percent slopes, eroded | 15K | Moderately well drained | D | Very limited | Very limited |
| Snead silty clay loam, 5 to 14 percent slopes | 15K | Moderately well drained | D | Very limited | Very limited |
| Summit silty clay loam, 5 to 9 percent slopes | 15K | Moderately well drained | C | Very limited | Very limited |
| Deepwater silt loam, 2 to 5 percent slopes | 13K | Moderately well drained | C | Somewhat limited | Very limited |
| Blackoar silt loam, 0 to 2 percent slopes, occasionally flooded | 12K | Poorly drained | B/D | Very limited | Very limited |
| Polo silt loam, 2 to 5 percent slopes | 11K | Well drained | C | Very limited | Very limited |
| Verdigris silt loam, 1 to 3 percent slopes, frequently flooded | 11K | Well drained | B | Very limited | Very limited |
| Zook silty clay loam, 0 to 2 percent slopes, occasionally flooded | 10K | Poorly drained | D | Very limited | Very limited |
| Summit silty clay loam, 2 to 5 percent slopes | 8K | Moderately well drained | C | Very limited | Very limited |
| Sampsel silty clay loam, 5 to 9 percent slopes | 8K | Somewhat poorly drained | C/D | Very limited | Very limited |
What This Means
Building & Foundations
About 92% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 100% 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.