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Powell, Texas
Inside Powell's city limits, shrink-swell clay limits houses without basements on 86% of mapped land, higher than 94% of Texas cities. A shallow water table limits basements on 6%.
That clay share is above Navarro County's 75%. FEMA's flood data list no flood losses since 2016 in the 2 ZIP codes overlapping the city.
Data as of October 13, 2026 · sources · in Navarro County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 2 overlapping ZIPs
Foundation repair in Powell
Foundation repair in Powell: shrink-swell clay limits slab homes on 86% of Powell's mapped land, more than in 94% of Texas cities.
| 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 Powell city limits
| Expansive clay (limits slab homes) | 85.8% |
| High water table (limits basements) | 5.6% |
| Septic fields very limited | 85.9% |
| Clay swell (LEP, by area) | 8.4% |
| High-swell land (LEP 6%+) | 85.8% |
| Mapped soil | 773 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Burleson | 66% | 84% |
| Wilson | 11% | 88% |
| Heiden | 7% | 80% |
| Houston Black | 5% | 91% |
| Branyon | 4% | 92% |
| Lamar | 3% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 8.4% by land area here, and 86% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 86% of the mapped land.
Clay shrinks as it dries: 100% of Navarro County is in drought on the latest map, and 86% of Powell's mapped land has shrink-swell clay.
USDA rates 86% of the land very limited for septic absorption fields.
Drought in Navarro County
100% of Navarro 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 Powell. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75144 | 65% | 0 | $0 |
| 75153 | 35% | 0 | $0 |
Homes
Powell has fewer than 100 housing units in the ACS 2020-2024 estimates, too few for reliable shares.
Nearby cities
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026). Methods · Data status