Tygart Valley River
The Ohio river is formed by the confluence (meeting) of the Allegheny and Monongahela rivers.
There is a Monongahela River and the Monongahela National Forest in the state of West Virginia.
Allegheny River (from the North East) and the Monongahela River (from the South East) meet to form the Ohio River.
The Allegheny, The Monongahela and the Ohio.
The Monongahala River (i'm not quite sure i spelled that right), and the Allegheny River
The Allegheny River and the Monongahela River
The Allegheny River and the Monongahela River
The Allegheny River and the Monongahela River
The river is formed by the confluence of the Allegheny and Monongahela rivers at Point State Park (called the "Point") in Pittsburgh, Pennsylvania. It joins the Mississippi River at Cairo, Illinois. The native Americans considered the Monongahela to be the same as the Ohio and the Allegheny as a branch.
Tne Allegheny and Monongahela flow together and form the begining of the Ohio.
Pittsburgh
Pittsburgh