Sinkhole risk in Morris County, TX: Not karst, but voids possible

Not karst, but voids possible

No soluble bedrock; some pseudokarst (piping or lava-tube ground).

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

What this means before you buy

Not true karst, but soil piping or lava tubes can still open voids - mention it to an inspector.

Across 252 square miles, under one square mile of Morris County maps onto soluble rock. With about 12,184 residents (48 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 334 map points about 0.9 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why gypsum and salt move faster than limestone, and how ground with no limestone still opens up.

Counties around Morris County

The nearest county rated sinkhole country is Adair County, OK, about 192 miles north. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Titus County, TX 15 mi northwest · 10% at surface
Camp County, TX 17 mi southwest · 0% at surface
Cass County, TX 22 mi east · 0% at surface
Franklin County, TX 29 mi west · 31% at surface
Bowie County, TX 29 mi northeast · 24% at surface
Upshur County, TX 29 mi southwest · 0% at surface

Against the rest of Texas

Morris County ranks 214 of 254 in Texas for soluble rock at the surface, and sits above 0% of US counties on that measure.