Sinkhole risk in Jefferson 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 Jefferson County
No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.
Across 1,804 square miles, under one square mile of Jefferson County maps onto soluble rock. With about 33,944 residents (19 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 484 map points about 1.9 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 Jefferson County
The nearest county rated sinkhole country is Emery County, UT, about 883 miles southeast. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.
- Clallam County, WA 27 mi northwest · 0% at surface
- Mason County, WA 35 mi southeast · 0% at surface
- Kitsap County, WA 42 mi east · 0% at surface
- Island County, WA 47 mi northeast · 0% at surface
- Grays Harbor County, WA 50 mi south · 0% at surface
- San Juan County, WA 52 mi north · 4% at surface
Against the rest of Washington
Jefferson County ranks 23 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%