Bootheel
The Bootheel's sandy 'sunk lands' trace to the New Madrid quakes
Some low, sandy Bootheel ground subsided during the 1811-1812 New Madrid earthquakes, tying Dunklin County's soils and drainage to a seismic zone that state and federal agencies still treat as active.
Parts of the Bootheel sit low and sandy. Some of this ground is called “sunk lands.” It dropped during the great New Madrid earthquakes of 1811-1812. The Missouri Geological Survey says those quakes caused the land to sink, rise, and flood across the region. They also left thick sand and blocked old drainage. Much of the Bootheel later had to be drained before farmers could use it.
This history ties Dunklin County’s soils and water to the New Madrid Seismic Zone. State and federal agencies still treat that zone as a live hazard, not just old news. The area sees small quakes most years, and a larger one is possible someday.
If you are buying or building here, treat earthquakes as a current planning question. Read the official preparedness material from SEMA, and ask your insurance agent and builder direct questions. Skip the scary predictions and stick with the agencies that track the zone.
References
Where this fits: this note belongs to Dunklin County. See every local note for the county on its page.