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Point Blank, Texas
Inside Point Blank's city limits, shrink-swell clay limits houses without basements on 63% of mapped land, the highest of 3 cities in San Jacinto County. A shallow water table limits basements on 67%, the highest of 3 cities in San Jacinto County.
That clay share is above San Jacinto County's 16%. FEMA's flood data list 9 flood losses since 2016 in ZIP code 77364 overlapping the city. Of its 501 homes, 46% were built before 1980; the median dates from 1982.
Data as of October 13, 2026 · sources · in San Jacinto 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 Point Blank
Foundation repair in Point Blank: shrink-swell clay limits slab homes on 63% of Point Blank's mapped land, more than in 67% of Texas cities.
About 400 of Point Blank's 501 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 Point Blank city limits
| Expansive clay (limits slab homes) | 62.5% |
| High water table (limits basements) | 66.9% |
| Septic fields very limited | 87.5% |
| Clay swell (LEP, by area) | 6.2% |
| High-swell land (LEP 6%+) | 62.5% |
| Mapped soil | 1,372 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Woodville | 57% | n/a |
| Betis | 12% | n/a |
| Leggett | 6% | n/a |
| Burkeville | 6% | n/a |
| Wiergate | 3% | n/a |
| Hatliff | 2% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 6.2% by land area here, and 63% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 63% of the mapped land.
Clay shrinks as it dries: 92.7% of San Jacinto County is in drought on the latest map, and 63% of Point Blank's mapped land has shrink-swell clay.
On 67% of Point Blank's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 88% of the land very limited for septic absorption fields.
Drought in San Jacinto County
92.7% of San Jacinto 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 Point Blank. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 77364 | 100% | 9 | $565,437 |
Homes in Point Blank
| Housing units | 501 |
| Median year built | 1982 |
| Built before 1980 | 46% |
| Built 2000 or later | 17% |
| Owner-occupied | 98% |
| Median value, owner-occupied | $191,400 |
| Single-family detached | 86% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Onalaska | 8 mi | 15% | 46% |
| Coldspring | 12 mi | 2% | 5% |
| Riverside | 13 mi | 54% | 58% |
| Trinity | 17 mi | 16% | 83% |
| Livingston | 17 mi | 55% | 44% |
| Goodrich | 19 mi | 71% | 54% |
| Huntsville | 21 mi | 36% | 58% |
| New Waverly | 21 mi | 43% | 53% |
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