The Intracoastal Waterway is a 4,800-km (3,000-mile) recreational and commercial
waterway along the
Atlantic and
Gulf coasts of the
United States. Some lengths consist of natural inlets, salt-water rivers, bays, and sounds; others are man-made canals.The waterway runs the length of the Eastern Seaboard (Maine to
Miami,
Florida), from its unofficial northern terminus at the
Manasquan River in New Jersey, where it connects with the Atlantic Ocean at the Manasquan Inlet, to
Brownsville,
Texas. The waterway is toll-free, but commercial users pay a
fuel tax that is used to maintain and improve it. The ICW is a significant portion of the
Great loop, a circumnavigation route encircling the Eastern half of the North American continent.
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