Soil at the center of San Antonio, TX
The USDA soil survey maps the point near 29.4241, -98.4936 in San Antonio as Branyon clay, 0 to 1 percent slopes (map unit HtA, Bexar County, Texas). The dominant component is Branyon, a moderately well drained soil.
| Component | Share of unit | Drainage class | Hydrologic group |
|---|---|---|---|
| Branyon | 85% | Moderately well drained | D |
| Houston Black | 5% | Moderately well drained | D |
| Lewisville | 5% | Well drained | B |
| Burleson | 5% | Moderately well drained | D |
Source: USDA NRCS SSURGO via Soil Data Access, Bexar County, Texas (TX029), survey data version dated 9/3/2026.
NRCS septic tank absorption field rating for Branyon: Very limited. Source: USDA NRCS SSURGO via Soil Data Access, Bexar County, Texas (TX029), survey data version dated 9/3/2026.
This is the soil at one reference point, not your parcel. Soils change within a block. Enter a street address to get the map unit, layers, shrink-swell, water table and NRCS ratings for that exact point.