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Gulf Intracoastal Waterway
(詳細はIntracoastal Waterway located along the Gulf Coast of the United States. It is a navigable inland waterway running approximately 1050 miles (1700 kilometers) from Carrabelle, Florida, to Brownsville, Texas.
The waterway provides a channel with a controlling depth of 12 feet (3.7 meters), designed primarily for barge transportation. Although the U.S. government proposals for such a waterway were made in the early 19th century,〔(【引用サイトリンク】 work=University of Texas )〕 the Gulf Intracoastal Waterway was not completed until 1949.
==EHL & WHL mileages==
Locations along the Gulf Intracoastal Waterway are defined in terms of statute miles (as opposed to nautical miles, in which most marine routes are measured) east and west of Harvey Lock, a navigation lock in the New Orleans area located at . The Hathaway Bridge in Panama City, Florida, for example, is at mile 284.6 EHL (East of Harvey Lock). The Queen Isabella Causeway Bridge at South Padre Island is at mile 665.1 WHL (West of Harvey Lock).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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