The Ohio River forms the southern borders of Ohio and Indiana.
what lake forms the northerm borders of Ohio
Ohio
Lake Erie forms the entire north border. The Ohio River forms the entire south border. There are no natural borders on the East or West borders of Ohio.
Ohio
The border is the Ohio River.
the ohio river
Ohio
The Ohio River.
Ohio
Pennsylvania's western borders are with the states of Ohio to the west and West Virginia to the southwest.
The Ohio River forms the borders of West Virginia, Ohio, Kentucky, Indiana, and Illinois. The border terminates at the confluence with the Mississippi and the border with Pennsylvania.