Sinkhole risk in Chisago County, MN: 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 Chisago County

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

Across 415 square miles, under one square mile of Chisago County maps onto soluble rock. With about 59,105 residents (142 per square mile), homes are spread across towns and farmland, and a mapped unit may or may not reach the developed parts. The figures come from 254 map points about 1.3 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 Chisago County

The nearest county rated sinkhole country is Vernon County, WI, about 167 miles southeast. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Isanti County, MN 19 mi west · 0% at surface
Polk County, WI 22 mi east · 0% at surface
Anoka County, MN 23 mi southwest · 0% at surface
Washington County, MN 32 mi south · 0% at surface
Ramsey County, MN 35 mi south · 0% at surface
Burnett County, WI 36 mi northeast · 0% at surface

Against the rest of Minnesota

Chisago County ranks 20 of 87 in Minnesota for soluble rock at the surface, and sits above 0% of US counties on that measure.