Gulf Intracoastal Waterway

Gulf Intracoastal Waterway
Leland Bowman Lock near Intracoastal City, Louisiana, on the Gulf Intracoastal Waterway
The route of the Gulf Intracoastal Waterway
Location	Gulf Coast of the United States
Country	United States
Specifications
Length	1,300[1] miles (2,100 km)
History
Date completed	June 18, 1949 (1949-06-18)
Geography
Start point	Brownsville, Texas
End point	Saint Marks, Florida[2]
Branch of	Intracoastal Waterway
Connects to	Various

The Gulf Intracoastal Waterway (GIWW^[1]) is the portion of the Intracoastal Waterway located along the Gulf Coast of the United States. It is a navigable inland waterway running approximately 1,300 mi (2,100 km)^[1] from Saint Marks, Florida, to Brownsville, Texas.

The waterway provides a channel with a controlling depth of 12 ft (3.7 m), designed primarily for barge transportation. Although the U.S. government proposals for such a waterway were made in the early 19th century,^[3] the Gulf Intracoastal Waterway was not completed until 1949.^[4]

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 29°54′32″N 90°05′02″W / 29.909°N 90.084°W / 29.909; -90.084. 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).^[5]

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
• Arroyo Colorado
• Atchafalaya River
• Bayou Lafourche
• Bayou Terrebonne
• Calcasieu River
• Calcasieu Ship Channel
• Delcambre Canal
• Houston Ship Channel
• Industrial Canal
• Lower Mississippi River
• Mississippi River-Gulf Outlet Canal
• Mobile Bay (connecting to the Tenn-Tom Waterway)
• Pearl River
• Sabine-Neches Waterway (Includes portions of)
  • Neches River
  • Sabine Lake
  • Sabine River
• Santa Rosa Sound
• The Rigolets
• Vermilion River

Ports and harbors

Many of the busiest ports in the United States in terms of tons of cargo^[6] are located on or near the Gulf Intracoastal Waterway. Notable ports on or near the waterway include:
Florida

• Apalachicola, Florida
• Carrabelle, Florida
• Panama City, Florida
• Pensacola, Florida

Alabama

• Mobile, Alabama - Ranked 11th busiest

Mississippi

• Gulfport, Mississippi
• Pascagoula, Mississippi - Ranked 29th busiest

Louisiana

• Baton Rouge, Louisiana - Ranked 7th busiest
• Houma, Louisiana -
• Intracoastal City, Louisiana
• Lake Charles, Louisiana - Ranked 14th busiest
• Larose, Louisiana
• Morgan City, Louisiana
• New Orleans, Louisiana - Ranked 5th busiest
• Port Allen, Louisiana
• Port of South Louisiana - Ranked 2nd busiest
• Port of Plaquemines - Ranked 12th busiest

Texas

• Beaumont, Texas - Ranked 8th busiest
• Brownsville, Texas
• Corpus Christi, Texas - Ranked 3rd busiest
• Port Freeport, Texas - Ranked 16th busiest
• Galveston, Texas - Ranked 46th busiest
• Houston, Texas - Ranked as busiest port in the United States
• Port Arthur, Texas - Ranked 15th busiest
• Port Lavaca - Point Comfort, Texas
• Texas City, Texas - Ranked 20th busiest
• Victoria, Texas

See also

• IHNC Lake Borgne Surge Barrier
• Gulf Intracoastal Waterway West Closure Complex

References

Sources

• The Marine Transportation System and the Federal Role: Measuring Performance, Targeting Improvement. Special report (National Research Council (U.S.). Transportation Research Board). Transportation Research Board. 2004. ISBN 978-0-309-09452-8. Retrieved 2023-06-03.
• US Army (March 6, 2013). "What is the district's role in maintaining the GIWW?". army.mil. US Army.

This page was last edited on 3 June 2023, at 22:23