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Big Sandy, Texas
Inside Big Sandy's city limits, shrink-swell clay limits houses without basements on 0% of mapped land. A shallow water table limits basements on 40%, the 2nd-highest of 5 cities in Upshur County.
That clay share is close to Upshur County's 2%. FEMA's flood data list 1 flood losses since 2016 in ZIP code 75755 overlapping the city. Of its 636 homes, 51% were built before 1980; the median dates from 1979.
Data as of October 13, 2026 · sources · in Upshur 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 Big Sandy
Foundation repair in Big Sandy: shrink-swell clay limits slab homes on 0% of Big Sandy's mapped land.
About 400 of Big Sandy's 636 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 Big Sandy city limits
| Expansive clay (limits slab homes) | 0.0% |
| High water table (limits basements) | 40.4% |
| Septic fields very limited | 75.0% |
| Clay swell (LEP, by area) | 2.2% |
| High-swell land (LEP 6%+) | 3.1% |
| Mapped soil | 1,076 acres |
What the numbers mean here
On 40% of Big Sandy's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 75% of the land very limited for septic absorption fields.
Drought in Upshur County
100% of Upshur 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 Big Sandy. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75755 | 100% | 1 | $11,024 |
Homes in Big Sandy
| Housing units | 636 |
| Median year built | 1979 |
| Built before 1980 | 51% |
| Built 2000 or later | 15% |
| Owner-occupied | 52% |
| Median value, owner-occupied | $123,100 |
| Single-family detached | 65% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Hawkins | 5 mi | 2% | 18% |
| Winona | 7 mi | 1% | 25% |
| Gladewater | 10 mi | 2% | 32% |
| Union Grove | 11 mi | 1% | 31% |
| Warren City | 12 mi | 0% | 35% |
| Clarksville City | 13 mi | 9% | 44% |
| Gilmer | 14 mi | 0% | 27% |
| East Mountain | 15 mi | 0% | 34% |
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