Brown and Mills Counties, 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 Brown and Mills Counties, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Doudle-Real association, 1 to 8 percent slopes | 100K | Well drained | B | Somewhat limited | Very limited |
| Callahan-Throck complex, 1 to 8 percent slopes | 91K | Well drained | D | Somewhat limited | Very limited |
| Bolar-Brackett complex, 1 to 8 percent slopes | 90K | Well drained | C | Very limited | Very limited |
| Palopinto-Speck complex, 1 to 5 percent slopes, rubbly | 64K | Well drained | D | Very limited | Very limited |
| Tarrant-Tarpley complex, 1 to 8 percent slopes | 56K | Well drained | D | Very limited | Very limited |
| Bolar clay loam, 3 to 5 percent slopes | 46K | Well drained | C | Very limited | Very limited |
| Tarpley-Tarrant complex, 1 to 5 percent slopes | 44K | Well drained | D | Very limited | Very limited |
| Frio silty clay loam, 0 to 1 percent slopes, occasionally flooded | 32K | Well drained | C | Very limited | Very limited |
| Sunev clay loam, cool, 1 to 3 percent slopes | 30K | Well drained | B | Not limited | Somewhat limited |
| Bonti-Owens complex, 8 to 30 percent slopes | 27K | Well drained | C | Very limited | Very limited |
| Leeray clay, 1 to 3 percent slopes | 26K | Well drained | D | Very limited | Very limited |
| Bonti-Callahan association, 1 to 8 percent slopes, extremely stony | 26K | Well drained | C | Somewhat limited | Very limited |
| Krum silty clay, cool, 1 to 3 percent slopes | 25K | Well drained | C | Very limited | Very limited |
| Owens-Harpersville complex, 8 to 45 percent slopes, extremely bouldery | 24K | Well drained | D | Very limited | Very limited |
| Pedernales fine sandy loam, 1 to 3 percent slopes | 24K | Well drained | C | Somewhat limited | Very limited |
| Real very gravelly clay loam, 8 to 30 percent slopes | 19K | Well drained | D | Very limited | Very limited |
| Sagerton clay loam, warm, 1 to 3 percent slopes | 18K | Well drained | C | Somewhat limited | Very limited |
| Winters fine sandy loam, 1 to 3 percent slopes | 16K | Well drained | C | Somewhat limited | Very limited |
| Nukrum silty clay, 1 to 3 percent slopes | 16K | Well drained | C | Very limited | Very limited |
| Real-Rock outcrop complex, 8 to 40 percent slopes | 15K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 61% 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 96% 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.