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Annapolis, Md. — Maryland homeowners in parts of the state face a moderate risk of sinkholes, and experts say early warning signs often appear quietly before noticeable ground failures occur.
According to the U.S. Geological Survey, sections of Maryland sit atop limestone and other soluble rock formations, particularly in western and central regions of the state. This type of terrain, known as karst geology, can slowly erode as water moves underground, creating voids that weaken support beneath the surface. Heavy rainfall, prolonged wet periods, and shifts in groundwater levels can influence how quickly these changes develop…