Dimmit and Zavala Counties, 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 Dimmit and Zavala Counties, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Duval very fine sandy loam, 0 to 3 percent slopes | 129K | Well drained | B | Not limited | Somewhat limited |
| Maverick clay loam, gently undulating | 111K | Well drained | D | Very limited | Very limited |
| Brundage fine sandy loam, frequently flooded, 0 to 1 percent slopes | 90K | Moderately well drained | D | Very limited | Very limited |
| Pryor sandy clay loam, gently undulating | 81K | Well drained | C | Very limited | Very limited |
| Tonio fine sandy loam, gently undulating | 76K | Well drained | B | Not limited | Somewhat limited |
| Webb fine sandy loam, 0 to 3 percent slopes | 70K | Well drained | C | Somewhat limited | Very limited |
| Uvalde silty clay loam, dry, 0 to 2 percent slopes | 69K | Well drained | C | Somewhat limited | Very limited |
| Hindes-Yologo complex, 1 to 8 percent slopes | 65K | Well drained | C | Not limited | Very limited |
| Brystal fine sandy loam, 0 to 3 percent slopes | 64K | Well drained | B | Not limited | Somewhat limited |
| Antosa-Bobillo association, gently undulating | 60K | Moderately well drained | C | Somewhat limited | Very limited |
| Uvalde clay loam, 0 to 1 percent slopes | 60K | Well drained | C | Somewhat limited | Very limited |
| Chacon clay loam, 0 to 3 percent slopes | 57K | Well drained | C | Very limited | Very limited |
| Brundage fine sandy loam, 0 to 1 percent slopes, occasionally flooded | 52K | Moderately well drained | D | Very limited | Very limited |
| Cochina clay, 0 to 1 percent slopes, frequently flooded | 50K | Moderately well drained | D | Very limited | Very limited |
| Catarina clay, 0 to 2 percent slopes | 38K | Moderately well drained | D | Very limited | Very limited |
| Dilley fine sandy loam, gently undulating | 38K | Well drained | D | Very limited | Very limited |
| Montell clay association, 0 to 1 percent slopes | 37K | Moderately well drained | D | Very limited | Very limited |
| Poteet fine sandy loam, frequently flooded | 36K | Moderately well drained | C | Very limited | Very limited |
| Randado fine sandy loam, 0 to 4 percent slopes | 35K | Well drained | D | Very limited | Very limited |
| Cotulla clay, 0 to 3 percent slopes | 34K | Moderately well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 52% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 78% 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.