Sinkhole risk in Roberts 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%
The next step for one property
Not true karst, but soil piping or lava tubes can still open voids - mention it to an inspector.
Across 924 square miles, under one square mile of Roberts County maps onto soluble rock. With about 837 residents (1 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 396 map points about 1.5 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 Roberts County
The nearest county rated sinkhole country is Donley County, TX, about 61 miles south. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.
- Hutchinson County, TX 29 mi west · 12% at surface
- Gray County, TX 30 mi south · 2% at surface
- Ochiltree County, TX 30 mi north · under 1% at surface
- Hemphill County, TX 31 mi east · 0% at surface
- Carson County, TX 42 mi southwest · under 1% at surface
- Hansford County, TX 42 mi northwest · 0% at surface
Against the rest of Texas
Roberts County ranks 225 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%