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Coahoma, Texas
Inside Coahoma's city limits, shrink-swell clay limits houses without basements on 1% of mapped land, the 3rd-highest of 3 cities in Howard County. A shallow water table limits basements on under 1%.
That clay share is below Howard County's 24%. FEMA's flood data list 8 flood losses since 2016 in the 2 ZIP codes overlapping the city. Of its 352 homes, 67% were built before 1980; the median dates from 1968.
Data as of October 13, 2026 · sources · in Howard County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 2 overlapping ZIPs
of homes built before 1980
Foundation repair in Coahoma
Foundation repair in Coahoma: shrink-swell clay limits slab homes on 1% of Coahoma's mapped land.
About 300 of Coahoma's 352 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 Coahoma city limits
| Expansive clay (limits slab homes) | 1.0% |
| High water table (limits basements) | under 0.1% |
| Septic fields very limited | 7.9% |
| Clay swell (LEP, by area) | 3.1% |
| High-swell land (LEP 6%+) | under 0.1% |
| Mapped soil | 854 acres |
What the numbers mean here
With shrink-swell clay on 1% and a shallow water table on under 1% of the land, the soil survey points to neither problem across most of Coahoma; conditions still vary lot by lot.
Drought in Howard County
100% of Howard 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 Coahoma. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79511 | 78% | 0 | $0 |
| 79720 | 22% | 8 | $332,560 |
Homes in Coahoma
| Housing units | 352 |
| Median year built | 1968 |
| Built before 1980 | 67% |
| Built 2000 or later | 25% |
| Owner-occupied | 82% |
| Median value, owner-occupied | $172,700 |
| Single-family detached | 76% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Big Spring | 11 mi | 7% | 1% |
| Forsan | 13 mi | 11% | 0% |
| Westbrook | 18 mi | 11% | 0% |
| Colorado City | 27 mi | 5% | under 1% |
| Ackerly | 29 mi | 3% | 0% |
| Stanton | 30 mi | 3% | 4% |
| Loraine | 36 mi | 6% | 0% |
| Sterling City | 37 mi | 60% | 0% |
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