The Gulf Intracoastal Waterway is the portion of the

Intracoastal Waterway The Intracoastal Waterway (ICW) is a inland waterway along the Atlantic and Gulf of Mexico coasts of the United States, running from Massachusetts southward along the Atlantic Seaboard and around the southern tip of Florida, then following t ...

located along the

Gulf Coast of the United States The Gulf Coast of the United States, also known as the Gulf South, is the coastline along the Southern United States where they meet the Gulf of Mexico. The coastal states that have a shoreline on the Gulf of Mexico are Texas, Louisiana, Missi ...

. It is a navigable inland waterway running approximately from

Carrabelle Carrabelle is a city in Franklin County along Florida's Panhandle, United States. The population was 2,778 as of the 2010 census. Carrabelle is located east of Apalachicola at the mouth of the Carrabelle River on the Gulf of Mexico. Geography ...

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and ...

, to Brownsville,

Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...

. The waterway provides a channel with a controlling depth of , designed primarily for

barge Barge nowadays generally refers to a flat-bottomed inland waterway vessel which does not have its own means of mechanical propulsion. The first modern barges were pulled by tugs, but nowadays most are pushed by pusher boats, or other vessels. ...

transportation. Although the U.S. government proposals for such a waterway were made in the early 19th century, 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 The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and United States customary unit of distance; both are based on the older English unit of length equal to 5,280 Engli ...

(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 New Orleans ( , ,New Orleans

area located at . The Hathaway Bridge in

Panama City Panama City ( es, Ciudad de Panamá, links=no; ), also known as Panama (or Panamá in Spanish), is the capital and largest city of Panama. It has an urban population of 880,691, with over 1.5 million in its metropolitan area. The city is loca ...

, 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).

Connecting waterways

The Gulf Intracoastal Waterway crosses or meets, and in some cases is confluent with, numerous other navigable rivers and waterways. They include: *

Apalachicola River The Apalachicola River is a river, approximately 160 mi (180 km) long in the state of Florida. The river's large watershed, known as the ACF River Basin, drains an area of approximately into the Gulf of Mexico. The distance to its far ...

* Arroyo Colorado *

Atchafalaya River The Atchafalaya River ( french: La Rivière Atchafalaya, es, Río Atchafalaya) is a distributary of the Mississippi River and Red River in south central Louisiana in the United States. It flows south, just west of the Mississippi River, and ...

* Bayou Lafourche * Bayou Terrebonne * Calcasieu River * Calcasieu Ship Channel * Delcambre Canal *

Houston Ship Channel The Houston Ship Channel, in Houston, Texas, is part of the Port of Houston, one of the busiest seaports in the world. The channel is the conduit for ocean-going vessels between Houston-area terminals and the Gulf of Mexico, and it serves a ...

Industrial Canal The Industrial Canal is a 5.5 mile (9 km) waterway in New Orleans, Louisiana, United States. The waterway's proper name, as used by the U.S. Army Corps of Engineers and on NOAA nautical charts, is Inner Harbor Navigation Canal ( IHNC). ...

Lower Mississippi River The Lower Mississippi River is the portion of the Mississippi River downstream of Cairo, Illinois. From the confluence of the Ohio River and Upper Mississippi River at Cairo, the Lower flows just under 1000 miles (1600 km) to the Gulf of ...

Mississippi River-Gulf Outlet Canal Mississippi () is a state in the Southeastern region of the United States, bordered to the north by Tennessee; to the east by Alabama; to the south by the Gulf of Mexico; to the southwest by Louisiana; and to the northwest by Arkansas. Missis ...

Mobile Bay Mobile Bay ( ) is a shallow inlet of the Gulf of Mexico, lying within the state of Alabama in the United States. Its mouth is formed by the Fort Morgan Peninsula on the eastern side and Dauphin Island, a barrier island on the western side. The ...

(connecting to the Tenn-Tom Waterway) * Pearl River * Sabine-Neches Waterway (Includes portions of) **

Neches River The Neches River () begins in Van Zandt County west of Rhine Lake and flows for through the piney woods of east Texas, defining the boundaries of 14 counties on its way to its mouth on Sabine Lake near the Rainbow Bridge. Two major reservoirs, ...

** Sabine Lake ** Sabine River * Santa Rosa Sound *

The Rigolets Rigolets is a 12.9 kilometer (8 mi) long deepwater strait in Louisiana. "Rigolets" comes from the word ''rigole'', French for 'trench' or 'gutter'. The name is now locally pronounced "RIG-uh-leez". The strait begins at and follows a gener ...

* Vermilion River

Ports and harbors

Many of the busiest ports in the United States in terms of tons of cargo are located on or near the Gulf Intracoastal Waterway. Notable ports on or near the waterway include:
Florida *

Apalachicola, Florida Apalachicola ( ) is a city and the county seat of Franklin County, Florida, United States, on the shore of Apalachicola Bay, an inlet of the Gulf of Mexico. The population was 2,231 at the 2010 census. History The Apalachicola people, after ...

* Carrabelle, Florida *

Panama City, Florida Panama City is a city in and the county seat of Bay County, Florida, United States. Located along U.S. Highway 98 (US 98), it is the largest city between Tallahassee and Pensacola. It is the more populated city of the Panama City–Lynn ...

Pensacola, Florida Pensacola () is the westernmost city in the Florida Panhandle, and the county seat and only incorporated city of Escambia County, Florida, United States. As of the 2020 United States census, the population was 54,312. Pensacola is the principal c ...

Alabama *

Mobile, Alabama Mobile ( , ) is a city and the county seat of Mobile County, Alabama, United States. The population within the city limits was 187,041 at the 2020 census, down from 195,111 at the 2010 census. It is the fourth-most-populous city in Alabama ...

- Ranked 11th busiest
Mississippi *

Gulfport, Mississippi Gulfport is the second-largest city in Mississippi after the state capital, Jackson. Along with Biloxi, Gulfport is the co-county seat of Harrison County and the larger of the two principal cities of the Gulfport-Biloxi, Mississippi Metropolit ...

Pascagoula, Mississippi Pascagoula ( ) is a city in Jackson County, Mississippi, United States. It is the principal city of the Pascagoula Metropolitan Statistical Area, and is part of the Gulfport– Biloxi–Pascagoula Combined Statistical Area. The population was 2 ...

- Ranked 29th busiest
Louisiana *

Baton Rouge, Louisiana Baton Rouge ( ; ) is a city in and the List of capitals in the United States, capital of the U.S. state of Louisiana. Located the eastern bank of the Mississippi River, it is the county seat, parish seat of East Baton Rouge Parish, Louisiana, E ...

- Ranked 7th busiest *

Houma, Louisiana Houma ( ) is the largest city in, and the parish seat of, Terrebonne Parish in the U.S. state of Louisiana. It is also the largest principal city of the Houma– Bayou Cane–Thibodaux metropolitan statistical area. The city's government ...

- * Intracoastal City, Louisiana *

Lake Charles, Louisiana Lake Charles (French: ''Lac Charles'') is the fifth-largest incorporated city in the U.S. state of Louisiana, and the parish seat of Calcasieu Parish, located on Lake Charles, Prien Lake, and the Calcasieu River. Founded in 1861 in Calcas ...

- Ranked 14th busiest *

Larose, Louisiana Larose is an unincorporated community and census-designated place (CDP) in Lafourche Parish, Louisiana, United States. The population was 6,763 in 2020. It is part of the Houma– Bayou Cane–Thibodaux metropolitan statistical area. Ge ...

Morgan City, Louisiana Morgan City is a small Citibank, city in St. Mary Parish, Louisiana, St. Mary and lower St. Martin parishes in the U.S. state, U.S. State of Louisiana. The population was 12,404 at the 2010 United States Census, 2010 census. Known for being “rig ...

New Orleans, Louisiana New Orleans ( , ,New Orleans

- Ranked 5th busiest * Port Allen, Louisiana * Port of South Louisiana - Ranked 2nd busiest * Port of Plaquemines - Ranked 12th busiest
Texas *

Beaumont, Texas Beaumont is a coastal city in the U.S. state of Texas. It is the seat of government of Jefferson County, within the Beaumont– Port Arthur metropolitan statistical area, located in Southeast Texas on the Neches River about east of Houston ( ...

- Ranked 8th busiest *

Brownsville, Texas Brownsville () is a city in Cameron County in the U.S. state of Texas. It is on the western Gulf Coast in South Texas, adjacent to the border with Matamoros, Mexico. The city covers , and has a population of 186,738 as of the 2020 census. I ...

Corpus Christi, Texas Corpus Christi (; Ecclesiastical Latin: "''Body of Christ"'') is a coastal city in the South Texas region of the U.S. state of Texas and the county seat and largest city of Nueces County, it also extends into Aransas, Kleberg, and San Patricio ...

- Ranked 3rd busiest * Port Freeport, Texas - Ranked 16th busiest *

Galveston, Texas Galveston ( ) is a coastal resort city and port off the Southeast Texas coast on Galveston Island and Pelican Island in the U.S. state of Texas. The community of , with a population of 47,743 in 2010, is the county seat of surrounding G ...

- Ranked 46th busiest *

Houston, Texas Houston (; ) is the most populous city in Texas, the most populous city in the Southern United States, the fourth-most populous city in the United States, and the sixth-most populous city in North America, with a population of 2,304,580 i ...

- Ranked as busiest port in the United States *

Port Arthur, Texas Port Arthur is a city in Jefferson County, Texas, Jefferson County within the Beaumont–Port Arthur metropolitan area of the U.S. state of Texas. A small, uninhabited portion extends into Orange County, Texas, Orange County; it is east of Housto ...

- Ranked 15th busiest * Port Lavaca - Point Comfort, Texas *

Texas City, Texas Texas City is a city in Galveston County in the U.S. state of Texas. Located on the southwest shoreline of Galveston Bay, Texas City is a busy deepwater port on Texas's Gulf Coast, as well as a petroleum-refining and petrochemical-manufacturin ...

- Ranked 20th busiest *

Victoria, Texas Victoria is a small city in South Texas and county seat of Victoria County, Texas. The population was 65,534 as of the 2020 census. The three counties of the Victoria Metropolitan Statistical Area had a population of 111,163 as of the 2000 censu ...

References

{{Authority control Gulf Gulf Coast of the United States Canals in Alabama Canals in Florida Canals in Louisiana Canals in Mississippi Canals in New Orleans Canals in Texas Canals opened in 1949 1949 establishments in the United States

EHL & WHL mileages

Connecting waterways

Ports and harbors

See also

References