the Allegheny rive takes you to different rives then you will get there
It begins at Pittsburgh, Pennsylvania and runs to Cairo, Illinois where it meets the Mississippi River.
Illinois 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.
* Illinois * Indiana * Kentucky * Ohio * West Virginia
Missouri R.
Rivers flow in any direction they choose, constantly shifting and changing course in their search for a lower elevation.
The Ohio river is located on the east side of the united states.It is connected to the Mississippi river and ends in Pennsylvania.
The Rock River is a tribunary of the Mississippi River. It runs through the states of Illinois, as well as Wisconsin.
Pennsylvania, West Virginia, Ohio, Kentucky, Indian, Illinois
The Wabash River forms the easter border of Illinois. I've noticed that the previous answer was the Ohio River. The Ohio River actually is what runs along the southern tip of Illinois.
Peoria, IL is east of the Mississippi River which serves as the western border of the state of Illnois.
Mississippi