Dewey County, Oklahoma
The dominant drainage class is 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 Dewey County, Oklahoma.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Quinlan-Woodward complex, 5 to 20 percent slopes | 109K | Well drained | D | Very limited | Very limited |
| St. Paul silt loam, 1 to 3 percent slopes | 37K | Well drained | C | Somewhat limited | Very limited |
| Quinlan loam, 8 to 20 percent slopes | 37K | Well drained | D | Very limited | Very limited |
| Nobscot sand, 5 to 20 percent slopes | 37K | Well drained | A | Somewhat limited | Very limited |
| Carey silt loam, 3 to 5 percent slopes | 31K | Well drained | B | Somewhat limited | Somewhat limited |
| Hardeman fine sandy loam, 8 to 15 percent slopes, cool | 28K | Well drained | A | Somewhat limited | Very limited |
| Quinlan-Hardeman complex, 5 to 20 percent slopes | 26K | Well drained | D | Very limited | Very limited |
| Nobscot-Grandfield complex, 0 to 5 percent slopes | 20K | Well drained | A | Not limited | Very limited |
| St. Paul silt loam, 3 to 5 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Carey silt loam, 1 to 3 percent slopes | 17K | Well drained | B | Not limited | Somewhat limited |
| Lincoln fine sandy loam, 0 to 1 percent slopes, frequently flooded | 17K | Somewhat excessively drained | A | Very limited | Very limited |
| Quinlan-Woodward complex, 3 to 5 percent slopes, eroded | 16K | Well drained | D | Very limited | Very limited |
| Hardeman fine sandy loam, 3 to 5 percent slopes, cool | 15K | Well drained | A | Not limited | Very limited |
| Hardeman fine sandy loam, 5 to 8 percent slopes, cool | 12K | Well drained | A | Not limited | Very limited |
| Grandfield fine sandy loam, 1 to 3 percent slopes | 11K | Well drained | B | Not limited | Very limited |
| Westola fine sandy loam, 0 to 1 percent slopes, occasionally flooded | 10K | Well drained | A | Very limited | Very limited |
| Woodward loam, 3 to 5 percent slopes | 10K | Well drained | C | Somewhat limited | Very limited |
| Lincoln clay loam, 0 to 1 percent slopes, frequently flooded | 9K | Somewhat excessively drained | A | Very limited | Very limited |
| Carwile-Eda complex, 0 to 5 percent slopes | 9K | Poorly drained | C/D | Very limited | Very limited |
| Woodward-Carey complex, 3 to 5 percent slopes, eroded | 9K | Well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 48% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 89% 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.