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The Chesapeake Bay is the largest estuary in the United States. It lies off the Atlantic Ocean, surrounded by Maryland and Virginia. The Chesapeake Bay's drainage basin covers 64,299 square miles in the District of Columbia and parts of six states: New York, Pennsylvania, Delaware, Maryland, Virginia, and West Virginia. More than 150 rivers and streams drain into the bay. The Chesapeake Bay is approximately 200 miles long, from the Susquehanna River in the north to the Atlantic Ocean in the south. At its narrowest point between Kent County's Plum Point and the Harford County shore near Romney Creek, the bay is 2.8 miles wide; at its widest point, just south of the mouth of the Potomac River, it is 30 miles wide. Total shoreline for the bay and its tributaries is 11,684 miles, and the surface area of the bay and its major tributaries is 4,479 square miles. Average depth of the bay is 46 feet and the maximum depth is 208 feet. The bay is spanned in two places. The Chesapeake Bay Bridge crosses the bay in Maryland from Sandy Point to Kent Island; and the Chesapeake Bay Bridge-Tunnel in Virginia connects Virginia Beach to Cape Charles. The bay is known for its beauty, but in recent years it has been noted that the bay is becoming "emptier", with fewer crabs, oysters, and watermen. (via Freebase)