Great Miami River

Catchment area of ​​the Great Miami River ( beige) in the west. To the east of the Little Miami River ( catchment area shown in yellow )

Great Miami River near Vandalia

The Great Miami River ( Miami River also called ) is a right tributary of the Ohio River, approximately 257 km long, in southwestern Ohio (USA).

He was named after the tribe of Miami, who lived here until the land by white settlers. The region around the Great Miami River is known as the Miami Valley.

The river begins at Indian Lake in Logan County, about 24 km south-west of Lima. It flows south and southwest, to Sidney in the Loramie Creek in northern Miami County. He then flows south to Piqua and Troy, by Dayton, at its confluence with the rivers Stillwater River, Mad River, and Wolf Creek. From Dayton, it flows southwest to Middletown and Hamilton in southwest Ohio. In Hamilton County, it flows with the Whitewater River about 8 km from its confluence with the Ohio, about 24 km west of Cincinnati.

The Miami and Erie Canal was built in the 1830s and connects it to Lake Erie and served until the 1850s as a main transportation route in western Ohio.

After a major flood in March 1913 ( Great Dayton Flood ), the Miami Conservancy District established in 1914 to regulate the river and control.