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On average, the depth of the bay is 21 feet (6.4 m), including tributaries; [15] over 24 percent of the bay is less than 6 ft (2 m) deep. [16] Because the bay is an estuary, it has fresh water, salt water and brackish water. Brackish water has three salinity zones: oligohaline, mesohaline, and polyhaline.
The Mid Atlantic Bight also includes several large estuaries, such as Chesapeake Bay, whose average depth is less than 10 meters, and Long Island Sound with an average depth of around 20 meters. [ 5 ]
The Chesapeake Bay received so much fresh water that it altered the ecosystem, killing much of the marine life that depended on saltwater. The Mid-Atlantic Flood of June 2006 , caused by a stalled jet stream-driven storm system, affected portions of the river system.
The Chesapeake Bay Bridge, connecting the eastern and western shores of Maryland was completed in 1952. Length of the suspension span is 2,922 feet and the roadway is about 200 feet above water at ...
The depth of the main basin, between the southern tip of Whidbey Island and Tacoma, is approximately 600 feet (180 m). [ 3 ] In 2009, the term Salish Sea was established by the United States Board on Geographic Names as the collective waters of Puget Sound, the Strait of Juan de Fuca, and the Strait of Georgia .
The average daily flow during the water years 1931–2018 was 11,498 cubic feet (325.6 m 3) /s. [2] The highest average daily flow ever recorded on the Potomac at Little Falls, Maryland (near Washington, D.C.), was in March 1936 when it reached 426,000 cubic feet (12,100 m 3) /s. [2]
The Elk River is a tidal tributary of the Chesapeake Bay on the Eastern Shore of Maryland and on the northern edge of the Delmarva Peninsula. It is about 15 miles (24 km) long. [1] As the most northeastern extension of the Chesapeake Bay estuary, it has served as one entrance to the Chesapeake & Delaware Canal since the 19th century
The Chesapeake Bay watershed. The entire Chesapeake Bay watershed includes portions of six states (New York, Pennsylvania, West Virginia, Maryland, Virginia, and Delaware) and the District of Columbia. The watershed of the entire Chesapeake Bay covers 165,760 km 2 (approximately 64,000 mi 2 or 41 million acres [3] [4]).