Sinkhole risk in Clallam County, WA: 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 Clallam County
No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.
Across 1,739 square miles, under one square mile of Clallam County maps onto soluble rock. With about 77,958 residents (45 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 616 map points about 1.7 miles apart, so a pocket smaller than that can be missed or overstated.
Read next: how these percentages are measured, and the warning signs that apply anywhere.
Counties around Clallam County
The nearest county rated sinkhole country is Emery County, UT, about 909 miles southeast. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.
- Jefferson County, WA 27 mi southeast · 0% at surface
- San Juan County, WA 45 mi northeast · 4% at surface
- Island County, WA 56 mi east · 0% at surface
- Mason County, WA 62 mi southeast · 0% at surface
- Kitsap County, WA 66 mi southeast · 0% at surface
- Grays Harbor County, WA 69 mi south · 0% at surface
Against the rest of Washington
Clallam County ranks 13 of 39 in Washington for soluble rock at the surface, and sits above 0% of US counties on that measure.
- San Juan County 4%
- Stevens County 3%
- Pend Oreille County 2%
- Okanogan County under 1%
- Ferry County under 1%