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Plum Grove, Texas
Inside Plum Grove's city limits, shrink-swell clay limits houses without basements on 14% of mapped land. A shallow water table limits basements on 50%.
That clay share is below Liberty County's 46%. FEMA's flood data list 356 flood losses since 2016 in ZIP code 77327 overlapping the city. Of its 536 homes, 11% were built before 1980; the median dates from 2010.
Data as of October 13, 2026 · sources · in Liberty 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 Plum Grove
Foundation repair in Plum Grove: shrink-swell clay limits slab homes on 14% of Plum Grove's mapped land.
About 400 of Plum Grove's 536 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 Plum Grove city limits
| Expansive clay (limits slab homes) | 14.1% |
| High water table (limits basements) | 50.4% |
| Septic fields very limited | 88.7% |
| Clay swell (LEP, by area) | 2.9% |
| High-swell land (LEP 6%+) | 14.1% |
| Mapped soil | 2,326 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Belrose | 16% | n/a |
| Spurger | 13% | n/a |
| Waller | 11% | n/a |
| Segno | 9% | n/a |
| Caneyhead | 8% | n/a |
| Splendora | 7% | n/a |
What the numbers mean here
On 50% of Plum Grove's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 89% of the land very limited for septic absorption fields.
Drought in Liberty County
61.2% of Liberty 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 Plum Grove. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 77327 | over 99% | 356 | $21.7 million |
Homes in Plum Grove
| Housing units | 536 |
| Median year built | 2010 |
| Built before 1980 | 11% |
| Built 2000 or later | 63% |
| Owner-occupied | 93% |
| Median value, owner-occupied | $200,800 |
| Single-family detached | 68% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Roman Forest | 4 mi | under 1% | 76% |
| Patton Village | 4 mi | 3% | 59% |
| Splendora | 4 mi | 1% | 53% |
| Woodbranch | 5 mi | 3% | 49% |
| Cleveland | 10 mi | 1% | 74% |
| North Cleveland | 11 mi | 14% | 31% |
| Dayton | 16 mi | 59% | 56% |
| Kenefick | 17 mi | 53% | 48% |
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