Pontotoc 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 Pontotoc County, Oklahoma.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Darnell-Stephenville complex, 5 to 20 percent slopes | 47K | Well drained | D | Very limited | Very limited |
| Shidler-Rock outcrop complex, 5 to 30 percent slopes | 40K | Well drained | D | Very limited | Very limited |
| Verdigris and Cleora soils, 0 to 3 percent slopes, frequently flooded | 28K | Well drained | B | Very limited | Very limited |
| Verdigris silty clay loam, 0 to 1 percent slopes, occasionally flooded | 24K | Well drained | B | Very limited | Very limited |
| Lula-Shidler complex, 3 to 5 percent slopes | 19K | Well drained | D | Very limited | Very limited |
| Stephenville-Darnell complex, 3 to 8 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Chigley gravelly sandy loam, 5 to 12 percent slopes | 15K | Moderately well drained | C | Somewhat limited | Very limited |
| Newalla fine sandy loam, 1 to 5 percent slopes | 15K | Moderately well drained | D | Very limited | Very limited |
| Durant and Bates soils, 3 to 5 percent slopes, severely eroded | 14K | Moderately well drained | D | Very limited | Very limited |
| Durant loam, 1 to 3 percent slopes | 12K | Moderately well drained | D | Very limited | Very limited |
| Konawa loamy fine sand, 3 to 8 percent slopes, severely eroded | 11K | Well drained | B | Not limited | Very limited |
| Newalla-Stephenville complex, 3 to 8 percent slopes, severely eroded | 11K | Moderately well drained | D | Very limited | Very limited |
| Steedman silty clay loam, 3 to 8 percent slopes | 10K | Moderately well drained | D | Very limited | Very limited |
| Scullin-Shidler complex, 3 to 5 percent slopes | 9K | Well drained | C | Very limited | Very limited |
| Chigley gravelly sandy loam, 3 to 8 percent slopes, severely eroded | 9K | Moderately well drained | C | Somewhat limited | Very limited |
| Verdigris silt loam, 0 to 1 percent slopes, occasionally flooded | 8K | Well drained | B | Very limited | Very limited |
| Chigley gravelly sandy loam, 1 to 5 percent slopes | 8K | Moderately well drained | C | Somewhat limited | Very limited |
| Lula loam, 3 to 5 percent slopes | 8K | Well drained | B | Somewhat limited | Somewhat limited |
| Tussy clay, 5 to 12 percent slopes | 7K | Moderately well drained | D | Very limited | Very limited |
| Konawa loamy fine sand, 3 to 8 percent slopes | 7K | Well drained | B | Not limited | Very limited |
What This Means
Building & Foundations
About 81% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 97% 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.