Sinkhole risk in Galveston County, TX: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: 0%
At or near the surface: 0%
Buried under cover: 0%

The next step for one property

No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.

Across 379 square miles, under one square mile of Galveston County maps onto soluble rock. With about 367,407 residents (968 per square mile), most of the county is built up, so a mapped unit is likely to sit under somebody's street. The figures come from 396 map points about 1.0 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Galveston County

The nearest county rated sinkhole country is Runnels County, TX, about 353 miles northwest. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Brazoria County, TX 33 mi west · 0% at surface
Chambers County, TX 35 mi north · 0% at surface
Harris County, TX 53 mi northwest · 0% at surface
Fort Bend County, TX 57 mi west · 0% at surface
Jefferson County, TX 62 mi northeast · 0% at surface
Liberty County, TX 64 mi north · 0% at surface

Against the rest of Texas

Galveston County ranks 178 of 254 in Texas for soluble rock at the surface, and sits above 0% of US counties on that measure.