McCulloch 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 McCulloch County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Tarrant soils, 1 to 8 percent slopes | 198K | Well drained | D | Very limited | Very limited |
| Tarrant-Kavett complex, 0 to 5 percent slopes | 40K | Well drained | D | Very limited | Very limited |
| Rowena clay loam, 1 to 3 percent slopes | 40K | Well drained | C | Somewhat limited | Very limited |
| Mereta clay loam, 1 to 3 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Owens and Tarrant soils, hilly | 31K | Well drained | D | Very limited | Very limited |
| Cho-Mereta association, gently undulating | 30K | Well drained | D | Very limited | Very limited |
| Rumple gravelly clay loam, 1 to 8 percent slopes | 27K | Well drained | D | Very limited | Very limited |
| Valera clay, 1 to 3 percent slopes | 27K | Well drained | C | Very limited | Very limited |
| Leeray clay, 1 to 3 percent slopes | 22K | Well drained | D | Very limited | Very limited |
| Rowena clay loam, 0 to 1 percent slopes | 19K | Well drained | C | Somewhat limited | Very limited |
| Nuvalde clay loam, 1 to 3 percent slopes | 19K | Well drained | C | Somewhat limited | Very limited |
| Frio soils, 0 to 2 percent slopes, frequently flooded | 12K | Well drained | C | Very limited | Very limited |
| Mereta clay loam, 0 to 2 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Leeray clay, 0 to 1 percent slopes | 11K | Well drained | D | Very limited | Very limited |
| Brackett-Tarrant association, steep | 11K | Well drained | D | Very limited | Very limited |
| Frio clay loam, 0 to 1 percent slopes, rarely flooded | 10K | Well drained | C | Very limited | Very limited |
| Bonti-Owens complex, 1 to 20 percent slopes, extremely bouldery | 8K | Well drained | Not rated | Very limited | |
| Kavett silty clay, 0 to 3 percent slopes | 8K | Well drained | D | Very limited | Very limited |
| Roscoe-Reap complex | 7K | Moderately well drained | D | Very limited | Very limited |
| Yates very flaggy fine sandy loam, 1 to 8 percent slopes, extremely stony | 7K | Well drained | D | Very 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.