Atlantic seaboard watershed
The Atlantic seaboard watershed is a watershed of the Atlantic Ocean in eastern North America along the Atlantic Canada 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, the Eastern Continental Divide to the west, and the :File:NorthAmericaDivides.gif|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:
- Gulf of Maine:
- Long Island Sound:
- Lower New York Bay: >
;Other notable sub-watersheds:
- Delaware Bay: — larger than several, but not adjacent to either divide
- Chesapeake Bay: — adjacent to both divides
;Sub-watersheds adjacent to the Eastern Continental Divide:
- Albemarle Sound: >
- Winyah Bay: >
- Santee River: >
- Savannah River:
- St. Johns River:
- Biscayne Bay: >
- Kissimmee River:
