Blanco and Burnet 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 Blanco and Burnet Counties, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Brackett association, 1 to 8 percent slopes | 170K | Well drained | D | Very limited | Very limited |
| Brackett-Real association, 10 to 30 percent slopes | 157K | Well drained | D | Very limited | Very limited |
| Purves clay, 1 to 8 percent slopes | 113K | Well drained | D | Very limited | Very limited |
| Hensley gravelly loam, 1 to 8 percent slopes | 93K | Well drained | D | Very limited | Very limited |
| Eckrant-Rock outcrop association, 1 to 10 percent slopes | 68K | Well drained | D | Very limited | Very limited |
| Doss silty clay, moist, 1 to 5 percent slopes | 62K | Well drained | D | Very limited | Very limited |
| Krum clay, 1 to 3 percent slopes | 41K | Well drained | C | Very limited | Very limited |
| Bolar clay loam, 1 to 3 percent slopes | 38K | Well drained | C | Very limited | Very limited |
| Nebgen-Oben-Rock outcrop complex, 1 to 20 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Tarpley-Eckrant complex, 1 to 8 percent slopes, stony | 30K | Well drained | D | Very limited | Very limited |
| Voca-Click association, 1 to 5 percent slopes | 27K | Well drained | C | Somewhat limited | Very limited |
| Eckert-Rock outcrop complex, 2 to 20 percent slopes | 24K | Well drained | D | Very limited | Very limited |
| Krum clay, 3 to 5 percent slopes | 22K | Well drained | C | Very limited | Very limited |
| Keese-Rock outcrop complex, 1 to 12 percent slopes | 22K | Well drained | D | Very limited | Very limited |
| Water | 16K | D | Not rated | Not rated | |
| Eckrant-Rock outcrop association, 8 to 30 percent slopes | 16K | Well drained | D | Very limited | Very limited |
| Aledo gravelly clay loam, 1 to 8 percent slopes | 15K | Well drained | D | Very limited | Very limited |
| Purves gravelly clay, 1 to 3 percent slopes | 14K | Well drained | D | Very limited | Very limited |
| Pedernales fine sandy loam, 1 to 3 percent slopes | 12K | Well drained | C | Somewhat limited | Very limited |
| Oakalla silty clay loam, 0 to 2 percent slopes, occasionally flooded | 10K | Well drained | B | Very limited | Very limited |
What This Means
Building & Foundations
About 94% 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 98% 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.