Hamilton 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 Hamilton County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Doss-Real complex, 1 to 8 percent slopes | 63K | Well drained | D | Very limited | Very limited |
| Nuff very stony silty clay loam, 2 to 6 percent slopes | 59K | Well drained | C | Very limited | Very limited |
| Slidell clay, 1 to 3 percent slopes | 33K | Moderately well drained | D | Very limited | Very limited |
| Krum silty clay, cool, 1 to 5 percent slopes | 31K | Well drained | C | Very limited | Very limited |
| Fairy-Hico complex, 1 to 5 percent slopes, moderately eroded | 25K | Well drained | B | Not limited | Very limited |
| Pidcoke gravelly clay loam, 1 to 3 percent slopes | 24K | Well drained | D | Very limited | Very limited |
| Eckrant-Rock outcrop complex, 1 to 8 percent slopes, extremely stony | 24K | Well drained | D | Very limited | Very limited |
| Brackett-Pidcoke gravelly clay loams, 1 to 5 percent slopes | 21K | Well drained | D | Very limited | Very limited |
| Brackett-Maloterre complex, 2 to 12 percent slopes | 21K | Well drained | D | Very limited | Very limited |
| Real-Rock outcrop complex, 8 to 40 percent slopes | 19K | Well drained | D | Very limited | Very limited |
| Topsey clay loam, 1 to 5 percent slopes | 19K | Well drained | C | Somewhat limited | Very limited |
| Bosque clay loam, occasionally flooded | 16K | Well drained | B | Very limited | Very limited |
| Real gravelly clay loam, 1 to 3 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Nuff silty clay, 1 to 3 percent slopes | 13K | Well drained | C | Very limited | Very limited |
| Cranfill gravelly clay loam, 3 to 8 percent slopes | 12K | Well drained | C | Not limited | Very limited |
| Brackett gravelly clay loam, 8 to 30 percent slopes | 12K | Well drained | C | Very limited | Very limited |
| Cho gravelly clay loam, 1 to 3 percent slopes | 11K | Well drained | D | Very limited | Very limited |
| Oglesby gravelly silty clay, 1 to 3 percent slopes | 11K | Well drained | D | Very limited | Very limited |
| Evant gravelly silty clay, 1 to 3 percent slopes | 10K | Well drained | D | Very limited | Very limited |
| Wise clay loam, 3 to 5 percent slopes, moderately eroded | 10K | Well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 85% 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 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.