Sinkhole risk in Putnam County, MO: 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 Putnam County

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

Across 517 square miles, under one square mile of Putnam County maps onto soluble rock. With about 4,539 residents (9 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 343 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Putnam County

The nearest county rated sinkhole country is Cooper County, MO, about 113 miles south. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Sullivan County, MO 19 mi south · 0% at surface
Appanoose County, IA 20 mi north · 0% at surface
Wayne County, IA 25 mi northwest · 0% at surface
Schuyler County, MO 26 mi east · 0% at surface
Mercer County, MO 29 mi west · 0% at surface
Adair County, MO 29 mi southeast · 0% at surface

Against the rest of Missouri

Putnam County ranks 108 of 115 in Missouri for soluble rock at the surface, and sits above 0% of US counties on that measure.