What river does Beaver and Erie Canal and Louisville and Portland Canal have in common?
Beaver and Erie Canal:  The canal ran 136 mi north–south near the western edge of the state from the Ohio River to Lake Erie through Beaver County, Lawrence County, Mercer County, Crawford County, and Erie County, Pennsylvania. Louisville and Portland Canal: The Louisville and Portland Canal was a 2 mi canal bypassing the Falls of the Ohio River at Louisville, Kentucky.
Ohio River