Sinkhole risk in Wahkiakum 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 this means before you buy

No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.

Across 263 square miles, under one square mile of Wahkiakum County maps onto soluble rock. With about 4,800 residents (18 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 279 map points about 1.0 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Wahkiakum County

The nearest county rated sinkhole country is Emery County, UT, about 817 miles southeast. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Clatsop County, OR 23 mi southwest · 0% at surface
Pacific County, WA 25 mi northwest · 0% at surface
Columbia County, OR 29 mi southeast · 0% at surface
Cowlitz County, WA 36 mi east · 0% at surface
Thurston County, WA 53 mi northeast · 0% at surface
Washington County, OR 54 mi south · 0% at surface

Against the rest of Washington

Wahkiakum County ranks 36 of 39 in Washington for soluble rock at the surface, and sits above 0% of US counties on that measure.