
Sinkholes in Blackburn Park in Webster Groves are relatively small, but can clog with leaves and brush.
by Don Corrigan
Missouri is famous for mood rings, monster trucks, ice cream cones, toasted ravioli, floatable streams and show caves. Something the Show-Me-State should also be known for is its sinkholes.
Missouri is the Sinkhole State with huge, medium and teeny sinkholes. It has urban and rural, prairie and forest sinkholes. Technically a sinkhole is defined as a natural depression in the ground that can swallow lots of rain, but also on occasion a car or even a house.
For a good look at some small suburban sinkholes, take a walk in Blackburn Park in the St. Louis suburb of Webster Groves. For a good look at rural sinkholes, take a drive to Boone County south of Columbia.
The largest known sinkhole in Missouri encompasses approximately 700 acres southeast of where Interstate 70 crosses the Missouri River. Records are not kept about depth, but some sinkholes in Boone County are greater than 100 feet deep.
Rock Bridge Memorial State Park, located five miles south of Columbia, is a 2,273-acre park with sinkholes, a rock bridge, and an underground stream. The park also has a trail called the Sinkhole Trail.
Heavy rain across southern Missouri this fall opened up a new set of problems beyond flooding – sinkholes. When they open, they can swallow garages, houses and drain lakes and ponds.
The suburb of Webster Groves and parts of South St. Louis County are dotted with sinkholes, according to Missouri Department of Natural Resource geologic maps.











