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Sandy Point, Texas
Inside Sandy Point's city limits, shrink-swell clay limits houses without basements on 74% of mapped land, higher than 77% of Texas cities. A shallow water table limits basements on 34%.
That clay share is above Brazoria County's 64%. FEMA's flood data list 403 flood losses since 2016 in ZIP code 77583 overlapping the city.
Data as of October 13, 2026 · sources · in Brazoria County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
Foundation repair in Sandy Point
Foundation repair in Sandy Point: shrink-swell clay limits slab homes on 74% of Sandy Point's mapped land, more than in 77% 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 Sandy Point city limits
| Expansive clay (limits slab homes) | 73.5% |
| High water table (limits basements) | 34.3% |
| Septic fields very limited | 88.5% |
| Clay swell (LEP, by area) | 10.5% |
| High-swell land (LEP 6%+) | 71.0% |
| Mapped soil | 1,111 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Lake Charles | 58% | 97% |
| Bernard | 23% | 43% |
| Edna | 6% | n/a |
| Bacliff | 3% | n/a |
| Aris | 3% | n/a |
| Pledger | 2% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 10.5% by land area here, and 71% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 74% of the mapped land.
Clay shrinks as it dries: 100% of Brazoria County is in drought on the latest map, and 74% of Sandy Point's mapped land has shrink-swell clay.
On 34% of Sandy Point'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 Brazoria County
100% of Brazoria 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 Sandy Point. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 77583 | 100% | 403 | $23.5 million |
Homes
Sandy Point has fewer than 100 housing units in the ACS 2020-2024 estimates, too few for reliable shares.
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Iowa Colony | 4 mi | 76% | 28% |
| Bonney | 6 mi | 74% | 21% |
| Arcola | 7 mi | 80% | 23% |
| Manvel | 9 mi | 70% | 47% |
| Thompsons | 11 mi | 42% | 23% |
| Missouri City | 11 mi | 58% | 29% |
| Holiday Lakes | 14 mi | 38% | 2% |
| Liverpool | 14 mi | 84% | 33% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026). Methods · Data status