| See under Intracoastal Waterway. |
[in-truh-koh-stuh
l, in-] 
| a mostly inland water route, partly natural and partly artificial, extending 1550 mi. (2500 km) along the Atlantic coast from Boston to Florida Bay (Atlantic Intracoastal Waterway) and 1116 mi. (1800 km) along the Gulf coast from Carrabelle, Fla., to Brownsville, Tex. (Gulf Intracoastal Waterway): constructed to protect small craft from the hazards of the open sea. |
| Gulf Intracoastal Waterway (gŭlf) An inland waterway of bays, canals, and rivers from northwest Florida to Brownsville, Texas. It is approximately 1,770 km (1,100 mi) long. |