Sinkhole risk in Williams County, ND: 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 Williams County
No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.
Across 2,078 square miles, under one square mile of Williams County maps onto soluble rock. With about 40,763 residents (20 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 330 map points about 2.5 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 these percentages are measured.
Counties around Williams County
The nearest county rated sinkhole country is Fall River County, SD, about 355 miles south. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.
- Divide County, ND 32 mi north · 0% at surface
- McKenzie County, ND 43 mi south · 0% at surface
- Sheridan County, MT 53 mi northwest · 0% at surface
- Mountrail County, ND 53 mi east · 0% at surface
- Burke County, ND 54 mi northeast · 0% at surface
- Richland County, MT 63 mi southwest · 0% at surface
Against the rest of North Dakota
Williams County ranks 53 of 53 in North Dakota for soluble rock at the surface, and sits above 0% of US counties on that measure.
- Cavalier County 2%
- Ransom County under 1%
- Dunn County under 1%
- Barnes County under 1%
- Slope County under 1%