Throckmorton 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 Throckmorton County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Lueders-Throck complex, 1 to 8 percent slopes, extremely stony | 95K | Well drained | D | Very limited | Very limited |
| Leeray clay, 0 to 1 percent slopes | 55K | Well drained | D | Very limited | Very limited |
| Owens-Lueders complex, 5 to 30 percent slopes, extremely bouldery | 44K | Well drained | D | Very limited | Very limited |
| Throck silty clay loam, 1 to 5 percent slopes | 37K | Well drained | C | Very limited | Very limited |
| Owens-Harpersville complex, 8 to 45 percent slopes, extremely bouldery | 35K | Well drained | D | Very limited | Very limited |
| Clearfork silty clay loam, 0 to 1 percent slopes, occasionally flooded | 31K | Well drained | C | Very limited | Very limited |
| Rowden clay loam, 0 to 3 percent slopes | 25K | Well drained | D | Very limited | Very limited |
| Lueders-Springcreek complex, 1 to 8 percent slopes, very stony | 23K | Well drained | D | Very limited | Very limited |
| Bluegrove fine sandy loam, 1 to 3 percent slopes | 18K | Well drained | D | Somewhat limited | Very limited |
| Sagerton clay loam, moist, 1 to 3 percent slopes | 17K | Well drained | C | Somewhat limited | Very limited |
| Nukrum clay, 1 to 3 percent slopes | 16K | Well drained | C | Very limited | Very limited |
| Sagerton clay loam, moist, 0 to 1 percent slopes | 13K | Well drained | C | Somewhat limited | Very limited |
| Clairemont silt loam, moist, 0 to 2 percent slopes, occasionally flooded | 12K | Well drained | B | Very limited | Very limited |
| Thurber clay loam, 1 to 3 percent slopes | 11K | Moderately well drained | D | Very limited | Very limited |
| Gageby loam, moist, 0 to 2 percent slopes, occasionally flooded | 11K | Well drained | B | Very limited | Very limited |
| Swenson clay loam, 0 to 2 percent slopes | 11K | Well drained | C | Very limited | Very limited |
| Rowena clay loam, 1 to 3 percent slopes | 11K | Well drained | C | Somewhat limited | Very limited |
| Rowena clay loam, 0 to 1 percent slopes | 9K | Well drained | C | Somewhat limited | Very limited |
| Nuvalde clay loam, cool, 1 to 3 percent slopes | 9K | Well drained | C | Somewhat limited | Very limited |
| Speck silty clay loam, 0 to 2 percent slopes | 9K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 84% 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.