Sinkhole risk in Calhoun 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%

What to do about a house in Calhoun County

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

Across 507 square miles, under one square mile of Calhoun County maps onto soluble rock. With about 19,942 residents (39 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 556 map points about 1.0 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Calhoun County

The nearest county rated sinkhole country is Runnels County, TX, about 311 miles northwest. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Aransas County, TX 32 mi southwest · 0% at surface
Victoria County, TX 34 mi northwest · 0% at surface
Jackson County, TX 36 mi north · 0% at surface
Refugio County, TX 36 mi west · 0% at surface
Matagorda County, TX 42 mi northeast · 0% at surface
Goliad County, TX 54 mi west · 0% at surface

Against the rest of Texas

Calhoun County ranks 160 of 254 in Texas for soluble rock at the surface, and sits above 0% of US counties on that measure.