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Atlantic Seaboard
Watershed
The Atlantic Seaboard Watershed extends southward along the Atlantic Ocean from Nova Scotia to Florida
Location
Canada and the United States
Area
• Total
720,000 km2 (277,000 sq mi)
The Atlantic seaboard watershed is a watershed of the Atlantic Ocean in eastern North America along the Atlantic Canada (Maritimes) coast south of the Gulf of Saint Lawrence Watershed, and the East Coast of the United States north of the Kissimmee River watershed of Lake Okeechobee basin in the central Florida Peninsula.
The continental area east of the Appalachian Mountains and highlands to the north and south is demarcated on the south by drainage to the Lake Okeechobee basin (which drains both westward to the Gulf and eastward to ocean), the Eastern Continental Divide (ECD) to the west, and the Saint Lawrence divide to the north. US physiographic regions of this watershed are the Atlantic Plain and the Appalachian Mountains & Highlands.
Sub-watersheds adjacent to the Saint Lawrence divide
Chedabucto Bay: 2,148 square miles (5,560 km2)[1]
Gulf of Maine: 69,115 square miles (179,010 km2)
Long Island Sound: 16,246 square miles (42,080 km2)
Lower New York Bay: >14,000 square miles (36,000 km2)[clarification needed - The 14000 value is just the Hudson River drainage]
Other notable sub-watersheds
Delaware Bay: 14,119 square miles (36,570 km2)[clarification needed - The 14119 value is just the Delaware River drainage] — larger than several, but not adjacent to either divide
Rehoboth Bay
Indian River Bay
Assawoman Bay
Isle of Wight Bay
Sinepuxent Bay
Chincoteague Bay
Chesapeake Bay: 64,299 square miles (166,530 km2) — adjacent to both divides (at the Triple Divide point)
Sub-watersheds adjacent to the Eastern Continental Divide
Albemarle Sound: >14,380 square miles (37,200 km2)[2][specify]
Winyah Bay: >7,221 square miles (18,700 km2)[3][specify]
Santee River: >4,531 square miles (11,740 km2)[4][specify]
Savannah River: 9,850 square miles (25,500 km2)
St. Johns River: 8,840 square miles (22,900 km2)
Biscayne Bay: >2,800 square miles (7,300 km2)[clarification needed - The 2800 value is just the Miami River drainage]
Kissimmee River: 3,000 square miles (7,800 km2)
^"Chedabucto Bay". Archived from the original on 2011-07-06. Retrieved 2010-04-10.
^"Archived copy" (PDF). Archived from the original (PDF) on 2011-07-18. Retrieved 2010-08-10.{{cite web}}: CS1 maint: archived copy as title (link)
^[1][permanent dead link]
^"Bureau of Water -- Outreach". Archived from the original on 2010-06-03. Retrieved 2010-08-10.
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