Sinkhole risk in Rockwall 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 Rockwall County

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

Across 127 square miles, under one square mile of Rockwall County maps onto soluble rock. With about 137,044 residents (1,077 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 391 map points about 0.6 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 Rockwall County

The nearest county rated sinkhole country is Baylor County, TX, about 169 miles west. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Kaufman County, TX 22 mi south · 0% at surface
Collin County, TX 23 mi northwest · 47% at surface
Dallas County, TX 23 mi southwest · 39% at surface
Hunt County, TX 24 mi northeast · 2% at surface
Rains County, TX 36 mi east · 0% at surface
Van Zandt County, TX 41 mi southeast · 0% at surface

Against the rest of Texas

Rockwall County ranks 227 of 254 in Texas for soluble rock at the surface, and sits above 0% of US counties on that measure.