Great Dayton Flood

Date: March 21, 1913 • Location: Dayton, United States

More than 360 were killed and 20,000 homes were destroyed in the Great Dayton Flood in Dayton, Ohio, U.S.

The Great Dayton Flood of 1913, part of the Great Flood of 1913, resulted from flooding by the Great Miami River reaching Dayton, Ohio, and the surrounding area, causing the greatest natural disaster in Ohio history. In response, the General Assembly passed the Vonderheide Act to enable the formation of conservancy districts. The Miami Conservancy District, which included Dayton and the surrounding area, became one of the first major flood control districts in Ohio and the United States.