Grant 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 Grant County, Oklahoma.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Kirkland silt loam, 1 to 3 percent slopes | 100K | Well drained | D | Very limited | Very limited |
| Kirkland silt loam, 0 to 1 percent slopes, cool | 58K | Well drained | D | Very limited | Very limited |
| Tabler silt loam, 0 to 1 percent slopes | 40K | Moderately well drained | D | Very limited | Very limited |
| McLain silt loam, 0 to 1 percent slopes, rarely flooded | 30K | Moderately well drained | C | Very limited | Very limited |
| Bethany silt loam, 0 to 1 percent slopes | 29K | Well drained | C | Very limited | Very limited |
| Pond Creek silt loam, 0 to 1 percent slopes | 26K | Well drained | B | Somewhat limited | Somewhat limited |
| McLain-Drummond complex, 0 to 1 percent slopes, rarely flooded | 24K | Moderately well drained | C | Very limited | Very limited |
| Pond Creek silt loam, 1 to 3 percent slopes | 23K | Well drained | B | Somewhat limited | Somewhat limited |
| Dale silt loam, 0 to 1 percent slopes, rarely flooded | 21K | Well drained | B | Very limited | Somewhat limited |
| Renfrow silty clay loam, 3 to 5 percent slopes, eroded | 18K | Well drained | D | Very limited | Very limited |
| Hawley fine sandy loam, 0 to 1 percent slopes, rarely flooded | 16K | Well drained | B | Very limited | Very limited |
| Grainola silty clay loam, 3 to 5 percent slopes | 15K | Well drained | D | Somewhat limited | Very limited |
| Kirkland-Pawhuska complex, 0 to 3 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Devol fine sandy loam, 1 to 3 percent slopes | 13K | Well drained | A | Not limited | Very limited |
| Eda loamy fine sand, 3 to 5 percent slopes | 12K | Somewhat excessively drained | A | Not limited | Very limited |
| Reinach very fine sandy loam, 0 to 1 percent slopes, rarely flooded | 11K | Well drained | B | Very limited | Somewhat limited |
| Grant silt loam, 1 to 3 percent slopes | 11K | Well drained | B | Somewhat limited | Somewhat limited |
| Port silt loam, 0 to 1 percent slopes, occasionally flooded | 11K | Well drained | B | Very limited | Very limited |
| Masham-Ashport frequently flooded complex, 0 to 20 percent slopes | 11K | Well drained | D | Very limited | Very limited |
| Goodnight loamy fine sand, 1 to 5 percent slopes | 10K | Excessively drained | A | Not limited | Very limited |
What This Means
Building & Foundations
About 77% 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 81% 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.