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Sudan, Texas
Inside Sudan's city limits, shrink-swell clay limits houses without basements on 0% of mapped land. A shallow water table limits basements on 0%.
That clay share is below Lamb County's 14%. FEMA's flood data list no flood losses since 2016 in ZIP code 79371 overlapping the city. Of its 507 homes, 65% were built before 1980; the median dates from 1968.
Data as of October 13, 2026 · sources · in Lamb 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 Sudan
Foundation repair in Sudan: shrink-swell clay limits slab homes on 0% of Sudan's mapped land.
About 400 of Sudan's 507 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 Sudan city limits
| Expansive clay (limits slab homes) | 0.0% |
| High water table (limits basements) | 0.0% |
| Septic fields very limited | 5.6% |
| Clay swell (LEP, by area) | 3.1% |
| High-swell land (LEP 6%+) | 0.0% |
| Mapped soil | 651 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Amarillo | 86% | 0% |
| Sharvana | 3% | n/a |
| Spantara | 3% | n/a |
| Patricia | 3% | n/a |
| Posey | 2% | n/a |
| Arvana | 2% | n/a |
What the numbers mean here
With shrink-swell clay on 0% and a shallow water table on 0% of the land, the soil survey points to neither problem across most of Sudan; conditions still vary lot by lot.
Drought in Lamb County
0% of Lamb 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 Sudan. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79371 | 100% | 0 | $0 |
Homes in Sudan
| Housing units | 507 |
| Median year built | 1968 |
| Built before 1980 | 65% |
| Built 2000 or later | 19% |
| Owner-occupied | 75% |
| Median value, owner-occupied | $100,400 |
| Single-family detached | 78% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Amherst | 7 mi | 1% | 1% |
| Earth | 13 mi | 9% | 4% |
| Littlefield | 15 mi | 21% | 3% |
| Muleshoe | 16 mi | 8% | 3% |
| Springlake | 17 mi | 37% | under 1% |
| Olton | 23 mi | 62% | 7% |
| Morton | 27 mi | 0% | 1% |
| Anton | 27 mi | 86% | 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