kids encyclopedia robot

Intracoastal Waterway facts for kids

Kids Encyclopedia Facts
Quick facts for kids
Intracoastal Waterway
Ft. Lauderdale Intracoastal Waterway.jpg
Intracoastal Waterway at Sunrise Boulevard, Fort Lauderdale, Florida, 2010
Country United States
Length 3,000 miles (4,800 km)
Date completed June 18, 1949 (1949-06-18)
Start point Annisquam River
End point Brownsville, Texas
Branch(es) Gulf Intracoastal Waterway
Connects to Atlantic portion
Gulf portion
Hobucken Bridge North Carolina
A section of the Intracoastal Waterway in Pamlico County, North Carolina crossed by the Hobucken Bridge

The Intracoastal Waterway (ICW) is a 3,000-mile (4,800 km) inland waterway along the Atlantic and Gulf of Mexico coasts of the United States, running from Boston, Massachusetts, southward along the Atlantic Seaboard and around the southern tip of Florida, then following the Gulf Coast to Brownsville, Texas. Some sections of the waterway consist of natural inlets, saltwater rivers, bays, and sounds, while others are artificial canals. It provides a navigable route along its length without many of the hazards of travel on the open sea.

Context and early history

Since the coastline represented the national border and commerce of the time was chiefly by water, the fledgling U.S. government established a degree of national control over it. Inland transportation to supply the coasting trade at the time was less known and virtually undeveloped, but when new lands and their favorable river systems were added in 1787, a radically new and free national policy was established for their development and transportation use.

Over time, internal improvements of natural coastal and inland waterways would develop into the Great Loop, which allows for waterborne circumnavigation of the eastern continental United States, using minimal ocean travel, with the Intracoastal Waterway providing its eastern end.

In 1808, the first federal government report on existing, possible, and likely avenues of transportation improvement was presented; it included much of the distance where the ICW now traverses the Atlantic coast. At the request of the Senate, Treasury Secretary Albert Gallatin presented an overall plan for future transportation developments of national importance and scope.

Along with inland east–west improvements, Gallatin's north–south improvements included the following:

The map of the United States will show that they possess a tide water inland navigation, secure from storms and enemies, and which, from Massachusetts to the southern extremity of Georgia, is principally, if not solely, interrupted by four necks of land. These are the Isthmus of Barnstable, that part of New Jersey which extends from the Raritan to the Delaware, the peninsula between the Delaware and the Chesapeake, and that low and marshy tract which divides the Chesapeake from Albemarle Sound. ...

Should this great work, the expense of which, as will hereafter be shown, is estimated at about three millions of dollars, be accomplished, a sea vessel entering the first canal in the harbor of Boston would, through the bay of Rhode Island, Long Island Sound, and the harbor of New York, reach Brunswick on the Raritan; thence pass through the second canal to Trenton on the Delaware, down that river to Christiana or Newcastle, and through the third canal to Elk River and the Chesapeake, whence, sailing down that bay and up Elizabeth River, it would, through the fourth canal, enter the Albemarle Sound, and by Pamlico, Core, and Bogue sounds, reach Beaufort and Swansborough in North Carolina. From the last-mentioned place, the inland navigation, through Stumpy and Toomer's sounds, is continued until a diminished draught of water, and by cutting two low and narrow necks, not exceeding three miles together, to Cape Fear River, and thence by an open but short and direct run along the coast is reached that chain of islands between which and the main the inland navigation is continued, to St. Marys along the coast of South Carolina and Georgia. It is unnecessary to add any comments on the utility of the work, in peace or war, for the transportation of merchandise or the conveyance of persons.

While Gallatin discussed the details of engineering, construction, and costs, including the national benefits to accrue from lowered transportation costs between domestic and international markets, his full $20 million, 10-year plan was never approved. That is not to say his plan was never implemented, however, for with experience in the War of 1812 shortly thereafter and the attendant British blockade, the continued need for such facility was soon highlighted.

Since Gallatin had based his proposals on the known advantageous natural geographic features of the country, many of his proposals became the locations of navigation improvements that were surveyed, authorized, and constructed starting with the 1824 General Survey Act and the first of many pieces of rivers and harbors legislation, as well by individual state-built improvements.

Since these 1824 acts, the United States Army Corps of Engineers (USACE) has responsibility for navigation waterway improvements and maintenance. All four proposed sections of Gallatin's intracoastal plan were eventually built; the Delaware and Raritan Canal was later abandoned for a better alternative, but the Cape Cod Canal remains in operation, and the Delaware and the Dismal Swamp portions still form part of the larger present-day Intracoastal Waterway.

19th-century growth

In 1826, Congress authorized the first survey for an inland canal between the Atlantic Ocean and Gulf of Mexico. After the Civil War, government funding shifted from waterways to railroads; still, coastal improvements authorized for development included the Houston Ship Channel and the Delaware River in 1872. The following year, the Senate's Select Committee on Transportation Routes to the Seaboard looked at the need for more haulage capacity to move freight to the coasts. But their "Report of Windom Select Committee" their plans and recommendations "received less attention than was anticipated, of course by reason of the rapid growth of interest in railways".

In the River and Harbors Appropriations Acts of 1882 and 1884, Congress signaled its intent to improve waterways to benefit the nation by promoting competition among transportation modes. The 1882 act was the first act of Congress to combine appropriations for development of the nation's waterways with a reaffirmation of the policy of freedom from tolls and other user charges, first stated in 1787; it was passed over President Chester Arthur's veto, who considered it a waste of the federal government's growing budget surplus. In 1887, the Interstate Commerce Act established federal regulation of railroads; Congress continued to promote freedom from tolls or special taxes on waterways. In 1890, Congress passed the Sherman Antitrust Act, the first federal statute to limit cartels and monopolies, but the federal government used it minimally until Theodore Roosevelt's presidency more than 10 years later.

Continued insufficient capacity of railroad transportation became apparent following the harvest of 1906.

Current route

Tug & barges on Gulf Intracoastal Waterway
Tug and barge passing through the Colorado River Locks on the Gulf Intracoastal Waterway near Matagorda, Texas
Intracoastal Waterway Louisiana
Navigation on the Gulf Intracoastal Waterway, where it intersects with Bayou Perot, in the vicinity of New Orleans
Aerial photo of the Cape Cod Canal and Scusset Beach State Reservation in southeastern Massachusetts

The Intracoastal Waterway runs for most of the length of the Eastern Seaboard. The waterway consists of three non-contiguous segments. The first segment runs from Brownsville, Texas east to Carrabelle, Florida. Then there's a gap in northwest Florida until it starts again at Tarpon Springs, Florida and runs south to Fort Myers, Florida. Then there's another gap in southwest Florida until it starts again at Key West, Florida and runs north to Portsmouth, Virginia (milepost 0.0). The first and second sections are collectively referred to as the Gulf Intracoastal Waterway, and the third is referred to as the Atlantic Intracoastal Waterway (AIWW).

The first and second sections were intended to be connected via a dredged waterway from Tarpon Springs to St. Marks, Florida (which is near Carrabelle), and the second and third sections were intended to be connected via the Cross Florida Barge Canal across northern Florida. But these projects were never completed due to environmental concerns.

Additional canals and bays extend a navigable waterway north of Portsmouth. Its unofficial northern terminus is the Manasquan River in New Jersey, where it connects with the Atlantic Ocean at the Manasquan Inlet. North of that is its official terminus point, the Annisquam River, a U.S. Army Corps maintained channel 26 miles (42 km) northeast of Boston, Massachusetts, connecting Annisquam and Gloucester, Massachusetts.

The Intracoastal Waterway has a good deal of commercial activity; barges haul petroleum, petroleum products, foodstuffs, building materials, and manufactured goods. It is also used extensively by recreational boaters. On the east coast, some of the traffic in fall and spring is by snowbirds who regularly move south in winter and north in summer. The waterway is also used when the ocean is too rough for travel. Numerous inlets connect the Atlantic and the Gulf of Mexico with the Intracoastal Waterway.

The Intracoastal Waterway connects to several navigable rivers where shipping traffic can travel to inland ports, including the Mississippi, Alabama, Savannah, James, Delaware, Hudson, and Connecticut rivers.

Natural bodies of water

The following natural bodies of water are included in the Intracoastal Waterway system: Albemarle Sound, Apalachicola Bay, St. Andrews Bay, Aransas Bay, Barnegat Bay, Biscayne Bay, Boca Ciega Bay, Bogue Sound, Bon Secour Bay, Buzzards Bay, Cape Cod Bay, Cape Fear River, Casco Bay, Charleston Harbor, Charlotte Harbor, Chesapeake Bay, Choctawhatchee Bay, Connecticut River, Corpus Christi Bay, Delaware Bay, East River, Elizabeth River, Galveston Bay, Halifax River, Hampton Roads, Indian River Lagoon, Laguna Madre, Lake Worth Lagoon, Little River, Long Island Sound, Mobile Bay, Pensacola Bay, Perdido Bay, Waccamaw River, Winyah Bay.

East Coast Canals

Major freight canals

Other canals

Lewes and Rehoboth Canal north from Savannah Road drawbridge
Lewes and Rehoboth Canal in Lewes, Delaware
kids search engine
Intracoastal Waterway Facts for Kids. Kiddle Encyclopedia.