Sinkhole risk in Lincoln County, OK: Pockets of it

Pockets of it

Soluble rock at the surface or under thin cover in part of the county.

On soluble rock: 28%
At or near the surface: 28%
Buried under cover: 0%

What this means before you buy

Check the parcel against your state survey sinkhole map, and ask for an inspection if cracks, depressions or sticking doors show up.

That works out to roughly 268 of Lincoln County's 952 square miles on soluble rock, 268 of them with the rock at or near the surface. With about 34,972 residents (37 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 399 map points about 1.5 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: the signs to look for and how an inspection works, and how these percentages are measured.

Counties around Lincoln County

The nearest county rated sinkhole country is Canadian County, OK, about 63 miles west. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Payne County, OK 27 mi north · 18% at surface
Oklahoma County, OK 31 mi west · 11% at surface
Creek County, OK 31 mi northeast · 15% at surface
Pottawatomie County, OK 34 mi south · 10% at surface
Logan County, OK 35 mi northwest · 0% at surface
Okfuskee County, OK 35 mi southeast · 10% at surface

Which formation it is

The largest mapped soluble unit here is the Vanoss Group (shale), Late Pennsylvanian in age, covering about 28% of the county.

Against the rest of Oklahoma

Lincoln County ranks 31 of 77 in Oklahoma for soluble rock at the surface, and sits above 78% of US counties on that measure.