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Coastal Flooding

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Coastal Flooding

The most common cause of seiches in Ohio is a strong, constant wind blowing over the surface of the water forcing it to accumulate at the down-wind shore. A seiche is a standing wave in an enclosed or partially enclosed body of water that can cause coastal flooding. Small rhythmic seiches are almost always present on the Great Lakes but are usually unnoticeable except during periods of unusual calm. Wind speed and barometric pressure are the most obvious contributors to the size of an event. Because of the shallowness and elongated shape of Lake Erie, it is more prone to wind seiches similar to a storm surge like that caused by hurricanes.

For more information, see the section on seiche/coastal flooding in the State Hazard Mitigation Plan: Section 2.8

Reference Links

Coastal Management

ODNR's Coastal Erosion Area home page.

Lake Erie Coastal Erosion Program

ODNR, Division of Geological Survey, Lake Erie Coastal Erosion Problem in Ohio.