The Potomac River.
The Potomac River divides Maryland and Virginia (The Southern Border) , but Virginia does not own half of the Potomac River.
The dividing line between the states of Maryland and Virginia are the Potomac River, the District of Columbia (Washington, DC), and a line just north of due east from the Pocomoke River on the Delmarva Peninsula.
Maryland/Virginia border, flows into the Chesapeake bayUnited States [West Virginia, Maryland, Virginia and District of Columbia]
The Potomac River
West Virginia is bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the north and Maryland to the northeast. The Ohio River is the border on the west. The North branch of the Potomac River is part of the border on the Northeast. The Big Sandy River is part of the Southwest border.
No, but it is on the north (Maryland) side of the Potomac River, on the border between Maryland and Virginia. It is about 30 miles SW of Baltimore, MD and about 70 miles north of Richmond, VA.
The Potomac River separates Maryland and Virginia.
The Ohio River forms the border between WV and OH.
Potomac River, for a short distance.