Causes and risk factors of Barrett's esophagus As with most diseases and conditions, there are certain groups of people who are at a higher risk of developing Barrett's esophagus. GERD is a condition that is closely linked to Barrett's esophagus.
Potomac River â Map & Details. print this map. Located along the mid-Atlantic coast of the United States, and flowing into the Chesapeake Bay, the Potomac River flows through Washington DC, Virginia, Maryland, Pennsylvania and West Virginia.
Share Potomac River. The Potomac River begins at a spring in the northeastern corner of Tucker County. The spring is the site of a small monolith, a replica of the first Fairfax Stone that once marked the boundary of the land grant to the sixth Lord Fairfax, which ran to the farthest headwaters of the Potomac.