Atascosa County, Texas
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate 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 Atascosa County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Nusil-Rhymes association, 0 to 5 percent slopes | 62K | Well drained | C | Not limited | Very limited |
| Aluf-Hitilo association, gently undulating | 55K | Somewhat excessively drained | A | Not limited | Very limited |
| Poth loamy fine sand, 0 to 3 percent slopes | 53K | Well drained | C | Not limited | Very limited |
| Floresville fine sandy loam, 1 to 3 percent slopes | 50K | Well drained | C | Somewhat limited | Very limited |
| Webb fine sandy loam, 1 to 3 percent slopes | 47K | Well drained | C | Somewhat limited | Very limited |
| Hanis sandy clay loam, 1 to 3 percent slopes | 46K | Well drained | C | Somewhat limited | Very limited |
| Wilco loamy fine sand, 0 to 3 percent slopes | 38K | Well drained | C | Somewhat limited | Very limited |
| Elmendorf-Denhawken complex, 1 to 4 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Amphion sandy clay loam, 1 to 3 percent slopes | 34K | Well drained | C | Somewhat limited | Very limited |
| Monteola clay, 1 to 3 percent slopes | 33K | Well drained | D | Very limited | Very limited |
| Christine soils, occasionally flooded | 32K | Somewhat poorly drained | C | Very limited | Very limited |
| Imogene fine sandy loam, 0 to 2 percent slopes | 29K | Moderately well drained | D | Somewhat limited | Very limited |
| Miguel fine sandy loam, 1 to 3 percent slopes | 21K | Well drained | C | Somewhat limited | Very limited |
| Monteola clay, saline, 1 to 3 percent slopes | 20K | Well drained | D | Very limited | Very limited |
| Campbellton loam, 1 to 3 percent slopes | 15K | Well drained | C | Very limited | Very limited |
| Duval very fine sandy loam, 1 to 3 percent slopes | 14K | Well drained | B | Not limited | Somewhat limited |
| Poteet soils, occasionally flooded | 13K | Moderately well drained | C | Very limited | Very limited |
| Sinton soils, frequently flooded | 13K | Well drained | B | Very limited | Very limited |
| Weigang sandy clay loam, 1 to 5 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Hindes very gravelly loam, 1 to 8 percent slopes | 12K | Well drained | C | Not limited | Very limited |
What This Means
Building & Foundations
About 27% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 97% 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.