Event Overview

The Ohio River Flood of 1937 remains one of the most widespread and destructive floods in the history of the Ohio Valley, affecting multiple states and devastating southern Ohio communities. Weeks of heavy rainfall saturated the watershed and pushed the river to record breaking levels, overwhelming levees and inundating entire neighborhoods. Cincinnati, Portsmouth, and other river cities suffered catastrophic damage as water levels rose far beyond previous flood records. Hundreds of thousands of residents were displaced, and economic losses reached unprecedented levels. The disaster prompted major federal investments in flood control infrastructure. Its scale and impact remain unmatched in many parts of the region.

Causes

Persistent rainfall overwhelmed the watershed. River levels rose steadily for weeks. Levee systems were unable to contain the flow.

Impact

Entire neighborhoods were submerged. Transportation networks were crippled. Thousands of residents were forced to evacuate.

Aftermath

Federal flood control projects expanded. New levees and floodwalls were constructed. Communities rebuilt over several years.

Ohio Flood Events

Ohio River Flood of 1959: Snowmelt Driven Flooding

Ohio River Flood of 1997: Cincinnati’s Modern Flood Disaster

Great Miami River Floods: Multi Decade Flood History