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Columbus, Ohio — Ohio homeowners in parts of the state face a moderate to high risk of sinkholes, and experts say early warning signs often appear quietly before serious ground failures occur.
According to the U.S. Geological Survey, sections of Ohio sit atop limestone, dolomite, and other soluble rock formations, particularly in western, central, and southwestern parts of the state. This type of terrain, known as karst geology, can gradually erode as water moves underground, forming voids that weaken support beneath the surface. Seasonal temperature swings, heavy rainfall, and groundwater fluctuations can accelerate this process…