Okmulgee 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 Okmulgee County, Oklahoma.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Hector-Endsaw complex, 5 to 30 percent slopes, stony | 73K | Well drained | D | Very limited | Very limited |
| Collinsville-Talihina complex, 10 to 30 percent slopes | 50K | Somewhat excessively drained | D | Very limited | Very limited |
| Dennis silt loam, 1 to 3 percent slopes | 46K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Taloka silt loam, 1 to 3 percent slopes | 33K | Somewhat poorly drained | D | Very limited | Very limited |
| Bates-Collinsville complex, 1 to 5 percent slopes | 30K | Well drained | C | Somewhat limited | Very limited |
| Eram-Verdigris complex, 0 to 20 percent slopes | 27K | Moderately well drained | D | Very limited | Very limited |
| Verdigris-Madill complex, 0 to 1 percent slopes, frequently flooded | 19K | Well drained | B | Very limited | Very limited |
| Verdigris silt loam, 0 to 1 percent slopes, occasionally flooded | 17K | Well drained | B | Very limited | Very limited |
| Hector-Clearview complex, 1 to 5 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Verdigris silt loam, 0 to 1 percent slopes, frequently flooded | 13K | Well drained | B | Very limited | Very limited |
| Okemah silt loam, 1 to 3 percent slopes | 11K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Dennis silt loam, 3 to 5 percent slopes | 11K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Okemah silt loam, 0 to 1 percent slopes | 10K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Dennis silt loam, 3 to 5 percent slopes, eroded | 9K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Parsons silt loam, 0 to 1 percent slopes | 9K | Somewhat poorly drained | D | Very limited | Very limited |
| Lightning silt loam, 0 to 1 percent slopes, occasionally flooded | 7K | Poorly drained | D | Very limited | Very limited |
| Okemah-Eram complex, 1 to 3 percent slopes | 6K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Karma loamy fine sand, 3 to 8 percent slopes | 6K | Well drained | B | Not limited | Very limited |
| Bates loam, 1 to 3 percent slopes | 5K | Well drained | C | Somewhat limited | Very limited |
| Parsons silt loam, 1 to 3 percent slopes | 5K | Somewhat poorly drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 89% 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 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.