Sinkhole risk in Coos County, OR: No soluble rock mapped

The next step for one property

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

Across 1,596 square miles, under one square mile of Coos County maps onto soluble rock. With about 64,326 residents (40 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 248 map points about 2.5 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Coos County

The nearest county rated sinkhole country is Emery County, UT, about 753 miles east. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

• Douglas County, OR 48 mi east · 1% at surface
• Curry County, OR 50 mi south · under 1% at surface
• Josephine County, OR 61 mi southeast · 9% at surface
• Lane County, OR 79 mi northeast · 0% at surface
• Jackson County, OR 90 mi southeast · 2% at surface
• Benton County, OR 96 mi north · 0% at surface

Against the rest of Oregon

Coos County ranks 17 of 36 in Oregon for soluble rock at the surface, and sits above 0% of US counties on that measure.

• Baker County 14%
• Josephine County 9%
• Grant County 4%
• Polk County 3%
• Jackson County 2%