Coryell County, Texas
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 Coryell County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Doss-Real complex, 1 to 8 percent slopes | 103K | Well drained | D | Very limited | Very limited |
| Nuff very stony silty clay loam, 2 to 6 percent slopes | 79K | Well drained | C | Very limited | Very limited |
| Real-Rock outcrop complex, 8 to 40 percent slopes | 52K | Well drained | D | Very limited | Very limited |
| Topsey-Pidcoke clay loams association, 2 to 8 percent slopes | 45K | Well drained | C | Somewhat limited | Very limited |
| Eckrant-Rock outcrop complex, 1 to 8 percent slopes, extremely stony | 43K | Well drained | D | Very limited | Very limited |
| Slidell silty clay, 0 to 2 percent slopes | 39K | Moderately well drained | D | Very limited | Very limited |
| Eckrant very cobbly silty clay, 1 to 5 percent slopes, very stony | 32K | Well drained | D | Very limited | Very limited |
| Bolar gravelly clay loam, 1 to 4 percent slopes | 30K | Well drained | C | Very limited | Very limited |
| Cho clay loam, 1 to 3 percent slopes | 29K | Well drained | D | Very limited | Very limited |
| Topsey clay loam, 3 to 8 percent slopes, severely eroded | 29K | Well drained | C | Somewhat limited | Very limited |
| Denton silty clay, 1 to 3 percent slopes | 26K | Well drained | C | Somewhat limited | Somewhat limited |
| Fairy-Hico complex, 1 to 5 percent slopes, moderately eroded | 21K | Well drained | B | Not limited | Very limited |
| Bosque clay loam, 0 to 1 percent slopes, occasionally flooded | 20K | Well drained | B | Very limited | Very limited |
| Krum silty clay, cool, 1 to 3 percent slopes | 20K | Well drained | C | Very limited | Very limited |
| Lewisville clay loam, 1 to 3 percent slopes | 16K | Well drained | B | Not limited | Somewhat limited |
| Oglesby silty clay, 1 to 3 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Evant silty clay, 1 to 3 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Frio silty clay, 0 to 1 percent slopes, occasionally flooded | 10K | Well drained | C | Very limited | Very limited |
| Bosque clay loam, 0 to 1 percent slopes, rarely flooded | 10K | Well drained | B | Very limited | Somewhat limited |
| Minwells fine sandy loam, warm, 1 to 3 percent slopes | 9K | Well drained | C | Somewhat 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, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 91% 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.