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.
Washington DC is on the Potomac River, which also separates Virginia from Maryland. Originally, the Potomac River was not a boundary line, it was part of the District. It sep â¦ arated Maryland and Virginia. The land for D.C. was taken from Maryland and Virginia.