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Benavides, Texas
Inside Benavides' city limits, shrink-swell clay limits houses without basements on 10% of mapped land, the 2nd-highest of 3 cities in Duval County. A shallow water table limits basements on under 1%.
That clay share is above Duval County's 4%. FEMA's flood data list no flood losses since 2016 in ZIP code 78341 overlapping the city. Of its 634 homes, 57% were built before 1980; the median dates from 1974.
Data as of October 13, 2026 · sources · in Duval County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
of homes built before 1980
Foundation repair in Benavides
Foundation repair in Benavides: shrink-swell clay limits slab homes on 10% of Benavides' mapped land.
About 500 of Benavides' 634 homes are detached houses.
| Who designs the repair | The ASCE Texas Section's repair guidelines say a Texas-licensed engineer should evaluate the foundation and design the repair (2022 guidelines) |
| Prices | Cost guide ranges compared |
Soil under Benavides city limits
| Expansive clay (limits slab homes) | 10.3% |
| High water table (limits basements) | 0.5% |
| Septic fields very limited | 29.8% |
| Clay swell (LEP, by area) | 3.6% |
| High-swell land (LEP 6%+) | 4.3% |
| Mapped soil | 1,136 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Colmena | 22% | n/a |
| Benavides | 13% | n/a |
| Gertrudis | 10% | n/a |
| Delmita | 8% | n/a |
| Pernitas | 7% | n/a |
| Czar | 7% | n/a |
What the numbers mean here
With shrink-swell clay on 10% and a shallow water table on under 1% of the land, the soil survey points to neither problem across most of Benavides; conditions still vary lot by lot.
Drought in Duval County
100% of Duval County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap Benavides. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78341 | 100% | 0 | $0 |
Homes in Benavides
| Housing units | 634 |
| Median year built | 1974 |
| Built before 1980 | 57% |
| Built 2000 or later | 27% |
| Owner-occupied | 55% |
| Median value, owner-occupied | $70,600 |
| Single-family detached | 82% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| San Diego | 16 mi | 36% | 2% |
| Freer | 23 mi | 3% | under 1% |
| Alice | 24 mi | 49% | 14% |
| Premont | 24 mi | 49% | 24% |
| Falfurrias | 31 mi | 6% | 14% |
| Agua Dulce | 33 mi | 97% | 1% |
| Kingsville | 34 mi | 62% | 1% |
| Bishop | 38 mi | 96% | 3% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status