Douglas County, Missouri
The dominant drainage class is Moderately well drained and the dominant hydrologic group is B (moderate infiltration). 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 Douglas County, Missouri.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Coulstone-Bender complex, 15 to 50 percent slopes, very stony | 76K | Somewhat excessively drained | B | Very limited | Very limited |
| Ocie-Gatewood complex, 15 to 35 percent slopes, very stony | 66K | Moderately well drained | C | Very limited | Very limited |
| Poynor extremely gravelly silt loam, 8 to 15 percent slopes | 51K | Well drained | B | Somewhat limited | Somewhat limited |
| Mano-Ocie complex, 15 to 35 percent slopes, stony | 44K | Moderately well drained | C | Very limited | Very limited |
| Poynor extremely gravelly silt loam, 15 to 35 percent slopes, stony | 44K | Well drained | B | Very limited | Very limited |
| Mano-Ocie complex, 8 to 15 percent slopes, stony | 39K | Moderately well drained | C | Very limited | Very limited |
| Scholten-Poynor complex, 3 to 8 percent slopes | 32K | Moderately well drained | D | Very limited | Very limited |
| Mano-Ocie complex, 1 to 8 percent slopes | 30K | Moderately well drained | C | Very limited | Very limited |
| Ocie-Gatewood complex, 3 to 15 percent slopes, stony | 22K | Moderately well drained | C | Very limited | Very limited |
| Relfe-Sandbur complex, 0 to 2 percent slopes, frequently flooded | 13K | Excessively drained | A | Very limited | Very limited |
| Poynor very gravelly silt loam, 1 to 8 percent slopes | 10K | Well drained | B | Not limited | Somewhat limited |
| Clarksville extremely gravelly silt loam, 15 to 50 percent slopes | 8K | Somewhat excessively drained | B | Very limited | Very limited |
| Scholten-Tonti complex, 3 to 8 percent slopes | 8K | Moderately well drained | D | Very limited | Very limited |
| Pomme silt loam, 3 to 8 percent slopes | 7K | Well drained | B | Not limited | Somewhat limited |
| Cedargap-Razort complex, 0 to 2 percent slopes, frequently flooded | 7K | Well drained | A | Very limited | Very limited |
| Cedargap-Razort complex, 1 to 3 percent slopes, frequently flooded | 6K | Well drained | A | Very limited | Very limited |
| Gressy-Viraton complex, 3 to 8 percent slopes | 6K | Well drained | B | Very limited | Very limited |
| Cedargap gravelly loam, 1 to 3 percent slopes, frequently flooded | 6K | Well drained | B | Very limited | Very limited |
| Gatewood-Moko complex, 15 to 35 percent slopes, very rocky, very flaggy | 4K | Moderately well drained | D | Very limited | Very limited |
| Ocie-Gatewood complex, 3 to 8 percent slopes | 4K | Moderately well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 85% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 85% 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.