This page summarizes USDA SSURGO mapped soil information for Bexar County, Texas.
The largest mapped unit is Eckrant cobbly clay, 1 to 8 percent slopes (TaB), covering 7.86% of the mapped soil area shown here. Other leading units include Lewisville silty clay, 0 to 1 percent slopes (5.32%) and Aluf sand, 0 to 5 percent slopes (5.18%).
Map-unit acreage and percentages describe mapped SSURGO soil area in the county. Component rows estimate the acreage of named soils by applying each component’s SSURGO proportion to mapped unit area; those components are not separately drawn polygon boundaries. The largest estimate is Eckrant (14.69% of mapped area).
Drainage classes describe how quickly excess water is removed from soil, while hydrologic soil groups classify runoff potential under specified conditions. Neither is a parcel-level verdict. The coverage percentage below compares mapped soil area with Census county land area. For a particular address, use the lookup below and review its location-level sources.
This county summary is not an interactive map. The USDA NRCS tool opens separately; choose Texas and Bexar County in Quick Navigation, then define an Area of Interest before viewing soil maps or reports.
Coverage measures mapped SSURGO intersection with Census land geometry. It does not mean that every parcel or point has complete soil information.
County summaries provide regional context across mapped soil units. Address lookup combines available public datasets for the Census-matched location.
| Symbol | Map Unit Name | Mapped Acres | % of Mapped Area |
|---|---|---|---|
| TaB | Eckrant cobbly clay, 1 to 8 percent slopes | 62,411.71 | 7.86% |
| LvA | Lewisville silty clay, 0 to 1 percent slopes | 42,198.11 | 5.32% |
| EuC | Aluf sand, 0 to 5 percent slopes | 41,124.69 | 5.18% |
| TaD | Eckrant-Rock outcrop association, 8 to 30 percent slopes | 34,003.18 | 4.28% |
| HtA | Branyon clay, 0 to 1 percent slopes | 34,003.1 | 4.28% |
| TaC | Eckrant very cobbly clay, 5 to 15 percent slopes | 33,552.82 | 4.23% |
| LvB | Lewisville silty clay, 1 to 3 percent slopes | 31,950.86 | 4.02% |
| Cb | Crawford, stony and Bexar soils, 0 to 5 percent slopes | 30,321.32 | 3.82% |
| HsB | Houston Black clay, 1 to 3 percent slopes | 28,500.72 | 3.59% |
| HkB | Wilco loamy fine sand, 0 to 3 percent slopes | 27,951.69 | 3.52% |
| HuB | Houston Black gravelly clay, 1 to 3 percent slopes | 27,302.49 | 3.44% |
| BrE | Brackett gravelly clay loam, 12 to 20 percent slopes | 23,710.29 | 2.99% |
| HuC | Houston Black gravelly clay, 3 to 5 percent slopes | 20,956.3 | 2.64% |
| Tf | Tinn and Frio soils, 0 to 1 percent slopes, frequently flooded | 19,746.59 | 2.49% |
| CfB | Miguel fine sandy loam, 1 to 3 percent slopes | 19,566.39 | 2.46% |
| Component | Drainage Class | Hydrologic Group | Estimated Acres | % of Mapped Area |
|---|---|---|---|---|
| Eckrant | Well drained | D | 116,597.85 | 14.69% |
| Houston Black | Moderately well drained | D | 82,873.81 | 10.44% |
| Lewisville | Well drained | C, B | 67,890.14 | 8.55% |
| Brackett | Well drained | D | 48,083.77 | 6.06% |
| Branyon | Moderately well drained | D | 45,864.18 | 5.78% |
| Wilco | Well drained | C | 45,814.32 | 5.77% |
| Aluf | Somewhat excessively drained | A | 41,145.22 | 5.18% |
| Sunev | Well drained | B | 31,442.05 | 3.96% |
| Miguel | Well drained | C | 25,200.63 | 3.17% |
| San Antonio | Well drained | C | 24,764.84 | 3.12% |
| Floresville | Well drained | C | 23,965.14 | 3.02% |
| Heiden | Well drained | D | 23,765.9 | 2.99% |
| Patrick | Well drained | B | 19,458.72 | 2.45% |
| Austin | Well drained | C, D | 17,984.56 | 2.27% |
| Krum | Well drained | C | 17,716.37 | 2.23% |
Hydrologic soil groups are USDA/NRCS classifications related to runoff potential under specified soil conditions. They are not a property-level flood-risk rating.