Sinkhole risk in Cass 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 to do about a house in Cass County
Not true karst, but soil piping or lava tubes can still open voids - mention it to an inspector.
Across 937 square miles, under one square mile of Cass County maps onto soluble rock. With about 28,622 residents (31 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 377 map points about 1.6 miles apart, so a pocket smaller than that can be missed or overstated.
Read next: why gypsum and salt move faster than limestone, and how ground with no limestone still opens up.
Counties around Cass County
The nearest county rated sinkhole country is Adair County, OK, about 195 miles north. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.
- Marion County, TX 20 mi south · 0% at surface
- Morris County, TX 22 mi west · 0% at surface
- Bowie County, TX 25 mi north · 24% at surface
- Miller County, AR 30 mi northeast · 0% at surface
- Titus County, TX 36 mi west · 10% at surface
- Camp County, TX 37 mi west · 0% at surface
Against the rest of Texas
Cass County ranks 163 of 254 in Texas for soluble rock at the surface, and sits above 0% of US counties on that measure.
- Kerr County 99%
- Edwards County 99%
- Kendall County 98%
- Kimble County 97%
- King County 97%