No. Rivers are natural features.
Well, it depends on your definition of "in Ohio", but Lake Erie certainly is NOT man-made.
The Ohio River
No because a man can not make a river
The Colorado river is not man made, but a reservoir on the river named Lake Powell is.
Ohio is the closest state to the Ohio River that's why it is called the Ohio River.
the River Thames, is natural, it is not man-made.
The Ohio River
the river thames, is natural, it is not man-made.
The Ohio River forms Ohio's southern border.
Ohio River is a very important river in ohio
The Ohio River and Ohio River Valley boarder the southern part of Ohio.
Ohio