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Forsan, Texas
Inside Forsan's city limits, shrink-swell clay limits houses without basements on 11% of mapped land, the highest of 3 cities in Howard County. A shallow water table limits basements on 0%.
That clay share is below Howard County's 24%. FEMA's flood data list no flood losses since 2016 in ZIP code 79733 overlapping the city. Of its 142 homes, 77% were built before 1980; the median dates from 1971.
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 1 overlapping ZIP
of homes built before 1980
Foundation repair in Forsan
Foundation repair in Forsan: shrink-swell clay limits slab homes on 11% of Forsan's mapped land.
About 100 of Forsan's 142 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 Forsan city limits
| Expansive clay (limits slab homes) | 11.3% |
| High water table (limits basements) | 0.0% |
| Septic fields very limited | 89.2% |
| Clay swell (LEP, by area) | 2.3% |
| High-swell land (LEP 6%+) | 11.3% |
| Mapped soil | 187 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Ector | 78% | 0% |
| Valera | 10% | n/a |
| Cho | 4% | n/a |
| Angelo | 4% | n/a |
| Tobosa | 1% | n/a |
| Irion | under 1% | n/a |
What the numbers mean here
USDA rates 89% of the land very limited for septic absorption fields.
With shrink-swell clay on 11% and a shallow water table on 0% of the land, the soil survey points to neither problem across most of Forsan; 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 Forsan. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79733 | 100% | 0 | $0 |
Homes in Forsan
| Housing units | 142 |
| Median year built | 1971 |
| Built before 1980 | 77% |
| Built 2000 or later | 6% |
| Owner-occupied | 36% |
| Single-family detached | 85% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Big Spring | 11 mi | 7% | 1% |
| Coahoma | 13 mi | 1% | under 1% |
| Stanton | 25 mi | 3% | 4% |
| Westbrook | 27 mi | 11% | 0% |
| Sterling City | 29 mi | 60% | 0% |
| Ackerly | 35 mi | 3% | 0% |
| Colorado City | 36 mi | 5% | under 1% |
| Loraine | 43 mi | 6% | 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