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Lamesa, Texas
Inside Lamesa's city limits, shrink-swell clay limits houses without basements on under 1% of mapped land. A shallow water table limits basements on under 1%.
That clay share is close to Dawson County's 4%. FEMA's flood data list 1 flood losses since 2016 in ZIP code 79331 overlapping the city. Of its 4,073 homes, 84% were built before 1980; the median dates from 1963.
Data as of October 13, 2026 · sources · in Dawson 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 Lamesa
Foundation repair in Lamesa: shrink-swell clay limits slab homes on under 1% of Lamesa's mapped land.
About 3,600 of Lamesa's 4,073 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 Lamesa city limits
| Expansive clay (limits slab homes) | 0.2% |
| High water table (limits basements) | 0.1% |
| Septic fields very limited | 9.0% |
| Clay swell (LEP, by area) | 3.2% |
| High-swell land (LEP 6%+) | 0.1% |
| Mapped soil | 3,299 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Amarillo | 79% | 0% |
| Posey | 6% | n/a |
| Arvana | 4% | n/a |
| Midessa | 3% | n/a |
| Sharvana | 2% | n/a |
| Sprone | 2% | n/a |
What the numbers mean here
With shrink-swell clay on under 1% and a shallow water table on under 1% of the land, the soil survey points to neither problem across most of Lamesa; conditions still vary lot by lot.
Drought in Dawson County
100% of Dawson 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 Lamesa. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79331 | 100% | 1 | $15,000 |
Homes in Lamesa
| Housing units | 4,073 |
| Median year built | 1963 |
| Built before 1980 | 84% |
| Built 2000 or later | 2% |
| Owner-occupied | 69% |
| Median value, owner-occupied | $95,000 |
| Single-family detached | 89% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Los Ybanez | 2 mi | 0% | 0% |
| O'Donnell | 18 mi | 23% | under 1% |
| Ackerly | 20 mi | 3% | 0% |
| Tahoka | 31 mi | 4% | under 1% |
| Wellman | 35 mi | 0% | 0% |
| Brownfield | 36 mi | 0% | under 1% |
| Seagraves | 38 mi | under 1% | 1% |
| Seminole | 40 mi | under 1% | under 1% |
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