St. Lawrence Seaway (1983)
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The St. Lawrence Seaway (french: la Voie Maritime du Saint-Laurent) is a system of locks,
canal Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow un ...
s, and channels in Canada and the United States that permits oceangoing vessels to travel from the Atlantic Ocean to the
Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes ...
of North America, as far inland as
Duluth, Minnesota , settlement_type = City , nicknames = Twin Ports (with Superior), Zenith City , motto = , image_skyline = , image_caption = Clockwise from top: urban Duluth skyline; Minnesota ...
, at the western end of
Lake Superior Lake Superior in central North America is the largest freshwater lake in the world by surface areaThe Caspian Sea is the largest lake, but is saline, not freshwater. and the third-largest by volume, holding 10% of the world's surface fresh wa ...
. The seaway is named for the
St. Lawrence River The St. Lawrence River (french: Fleuve Saint-Laurent, ) is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a (roughly) northeasterly direction, into the Gulf of St. Lawrence, connecting ...
, which flows from
Lake Ontario Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York. The Canada–United States border sp ...
to the Atlantic Ocean. Legally, the seaway extends from
Montreal Montreal ( ; officially Montréal, ) is the List of the largest municipalities in Canada by population, second-most populous city in Canada and List of towns in Quebec, most populous city in the Provinces and territories of Canada, Canadian ...
,
Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
, to
Lake Erie Lake Erie ( "eerie") is the fourth largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has t ...
, and includes the Welland Canal. Ships from the Atlantic Ocean are able to reach ports in all five of the Great Lakes, via the Great Lakes Waterway. The St. Lawrence River portion of the seaway is not a continuous canal; rather, it consists of several stretches of navigable channels within the river, a number of locks, and canals along the banks of the St. Lawrence River to bypass several
rapids Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. ...
and
dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, a ...
s. A number of the locks are managed by the
St. Lawrence Seaway Management Corporation The St. Lawrence Seaway Management Corporation (SLSMC), formerly known as the St. Lawrence Seaway Authority, is a nonprofit Canadian Corporation established in 1998 by the government of Canada, in partnership with Seaway users and other stakeho ...
in Canada, and others in the United States by the
St. Lawrence Seaway Development Corporation The Great Lakes St. Lawrence Seaway Development Corporation (GLS) is an agency of the United States Department of Transportation that operates and maintains the U.S.-owned and operated facilities of the joint United States-Canadian St. Lawrence ...
; the two bodies together advertise the seaway as part of "Highway H2O". The section of the river from Montreal to the Atlantic is under Canadian jurisdiction, regulated by the offices of
Transport Canada Transport Canada (french: Transports Canada) is the department within the Government of Canada responsible for developing regulations, policies and services of road, rail, marine and air transportation in Canada. It is part of the Transportati ...
in the Port of Quebec.


History

The St. Lawrence Seaway was preceded by several other canals. In 1871, locks on the St. Lawrence allowed transit of vessels long, wide, and deep. The First Welland Canal, constructed between 1824 and 1829, had a minimum lock size of long, wide, and deep, but it was generally too small to allow passage of larger oceangoing ships. The Welland Canal's minimum lock size was increased to long, wide, and deep for the Second Welland Canal; to long, wide, and deep with the Third Welland Canal; and to long, wide, and deep for the current (Fourth) Welland Canal. The first proposals for a binational comprehensive deep waterway along the St. Lawrence were made in the 1890s. In the following decades, developers proposed a hydropower project as inseparable from the seaway; the various governments and seaway supporters believed the deeper water to be created by the hydro project was necessary to make the seaway channels feasible for oceangoing ships. U.S. proposals for development up to and including the
First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
met with little interest from the Canadian federal government. But the two national governments submitted St. Lawrence plans to a group for study. By the early 1920s, both ''
The Wooten-Bowden Report ''The'' () is a grammatical article in English, denoting persons or things already mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the m ...
'' and the International Joint Commission recommended the project. Although the Liberal Prime Minister
William Lyon Mackenzie King William Lyon Mackenzie King (December 17, 1874 – July 22, 1950) was a Canadian statesman and politician who served as the tenth prime minister of Canada for three non-consecutive terms from 1921 to 1926, 1926 to 1930, and 1935 to 1948. A Li ...
was reluctant to proceed, in part because of opposition to the project in
Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
, in 1932 he and the U.S. representative signed a treaty of intent. This treaty was submitted to the U.S. Senate in November 1932 and hearings continued until a vote was taken on March 14, 1934. The majority voted in favor of the treaty, but it failed to gain the necessary two-thirds vote for ratification. Later attempts between the governments in the 1930s to forge an agreement came to naught due to opposition by the Ontario government of Mitchell Hepburn and the government of Quebec. In 1936,
John C. Beukema John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second E ...
, head of the Great Lakes Harbors Association and a member of the Great Lakes Tidewater Commission, was among a delegation of eight from the Great Lakes states to meet at the White House with US President
Franklin D. Roosevelt Franklin Delano Roosevelt (; ; January 30, 1882April 12, 1945), often referred to by his initials FDR, was an American politician and attorney who served as the 32nd president of the United States from 1933 until his death in 1945. As the ...
to obtain his support for the seaway concept. Beukema and St. Lawrence Seaway proponents were convinced a nautical link would lead to the development of the communities and economies of the Great Lakes region by permitting the passage of oceangoing ships. In this period, exports of grain, along with other commodities, to Europe were an important part of the national economy. Negotiations on the treaty resumed in 1938, and by January 1940 substantial agreement was reached between Canada and the United States. By 1941, President Roosevelt and Prime Minister Mackenzie King made an executive agreement to build the joint hydro and navigation works, but this failed to receive the assent of the U.S. Congress. Proposals for the seaway were met with resistance; the primary opposition came from interests representing harbors on the
Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...
and Gulf coasts and internal waterways and from the railroad associations. The railroads carried freight and goods between the coastal ports and the Great Lakes cities. After 1945, proposals to introduce tolls to the seaway were not sufficient to gain support for the project by the U.S. Congress. Growing impatient, and with Ontario desperate for the power to be generated by hydroelectricity, Canada began to consider developing the project alone. This seized the imagination of Canadians, engendering a groundswell of nationalism around the St. Lawrence. Canadian Prime Minister
Louis St. Laurent Louis Stephen St. Laurent (''Saint-Laurent'' or ''St-Laurent'' in French, baptized Louis-Étienne St-Laurent; February 1, 1882 – July 25, 1973) was a Canadian lawyer and politician who served as the 12th prime minister of Canada from 19 ...
advised U.S. President
Harry S. Truman Harry S. Truman (May 8, 1884December 26, 1972) was the 33rd president of the United States, serving from 1945 to 1953. A leader of the Democratic Party, he previously served as the 34th vice president from January to April 1945 under Franklin ...
on September 28, 1951, that Canada was unwilling to wait for the United States and would build a seaway alone; the Canadian Parliament authorized the founding of the
St. Lawrence Seaway Authority The St. Lawrence Seaway Management Corporation (SLSMC), formerly known as the St. Lawrence Seaway Authority, is a nonprofit Canadian Corporation established in 1998 by the government of Canada, in partnership with Seaway users and other stakeho ...
on December 21 of that year. Fueled by this support, Saint Laurent's administration decided during 1951 and 1952 to construct the waterway alone, combined with the
Moses-Saunders Power Dam The Moses-Saunders Power Dam, short for Robert Moses- Robert H. Saunders Power Dam, is a dam on the Saint Lawrence River straddling the border between the United States and Canada. It is located between Massena in New York and Cornwall in Ontar ...
. (This became the joint responsibility of Ontario and New York: as a hydropower dam would change the water levels, it required bilateral cooperation.) The International Joint Commission issued an order of approval for joint construction of the dam in October 1952. U.S. Senate debate on the bill began on January 12, 1953, and the bill emerged from the House of Representatives Committee of Public Works on February 22, 1954. It received approval from the Senate and the House by May 1954. The first positive action to enlarge the seaway was taken on May 13, 1954, when U.S. President
Dwight D. Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; ; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, ...
signed the Wiley-Dondero Seaway Act to authorize joint construction and establish the
St. Lawrence Seaway Development Corporation The Great Lakes St. Lawrence Seaway Development Corporation (GLS) is an agency of the United States Department of Transportation that operates and maintains the U.S.-owned and operated facilities of the joint United States-Canadian St. Lawrence ...
as the U.S. authority. The need for cheap haulage of Quebec-
Labrador , nickname = "The Big Land" , etymology = , subdivision_type = Country , subdivision_name = Canada , subdivision_type1 = Province , subdivision_name1 ...
iron ore was one of the arguments that finally swung the balance in favor of the seaway. Groundbreaking ceremonies took place in
Massena, New York Massena is a town in St. Lawrence County, New York, United States. Massena is along the county's northern border, just south of the St. Lawrence River and the Three Nations Crossing of the Canada–United States border. The population was 12,8 ...
, on August 10, 1954. That year
John C. Beukema John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second E ...
was appointed by Eisenhower to the five-member
St. Lawrence Seaway Advisory Board ST, St, or St. may refer to: Arts and entertainment * Stanza, in poetry * Suicidal Tendencies, an American heavy metal/hardcore punk band * Star Trek, a science-fiction media franchise * Summa Theologica, a compendium of Catholic philosophy ...
. In May 1957, the Connecting Channels Project was begun by the
United States Army Corps of Engineers , colors = , anniversaries = 16 June (Organization Day) , battles = , battles_label = Wars , website = , commander1 = ...
. By 1959, Beukema was on board the U.S. Coast Guard cutter ''Maple'' for the first trip through the U.S. locks, which opened up the Great Lakes to oceangoing ships. On April 25, 1959, large, deep-draft ocean vessels began streaming to the heart of the North American continent through the seaway, a project supported by every administration from
Woodrow Wilson Thomas Woodrow Wilson (December 28, 1856February 3, 1924) was an American politician and academic who served as the 28th president of the United States from 1913 to 1921. A member of the Democratic Party, Wilson served as the president of ...
through Eisenhower. In the United States,
N. R. Danelian N is the fourteenth letter of the Latin alphabet. N or n may also refer to: Mathematics * \mathbb, the set of natural numbers * N, the field norm * N for ''nullae'', a rare Roman numeral for zero * n, the size of a statistical sample Sci ...
(who was the director of the 13-volume St. Lawrence Seaway Survey in the U.S. Department of Navigation (1932–63)), worked with the U.S. Secretary of State on Canadian-U.S. issues regarding the seaway, persevering through 15 years to gain passage by Congress of the Seaway Act. He later became president of the
Great Lakes St. Lawrence Association Great may refer to: Descriptions or measurements * Great, a relative measurement in physical space, see Size * Greatness, being divine, majestic, superior, majestic, or transcendent People * List of people known as "the Great" *Artel Great (born ...
to promote seaway development to benefit the American heartland. The seaway was heavily promoted by the Eisenhower administration, which had been concerned with a lack of US control. The seaway opened in 1959 and cost C$470 million, $336.2 million of which was paid by the Canadian government.
Elizabeth II Elizabeth II (Elizabeth Alexandra Mary; 21 April 1926 – 8 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death in 2022. She was queen regnant of 32 sovereign states during ...
, Queen of Canada and American President
Dwight D. Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; ; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, ...
formally opened the seaway on June 26, 1959 with a short cruise aboard the
royal yacht A royal yacht is a ship used by a monarch or a royal family. If the monarch is an emperor the proper term is imperial yacht. Most of them are financed by the government of the country of which the monarch is head. The royal yacht is most often c ...
after addressing crowds in Saint-Lambert, Quebec. 22,000 workers were employed at one time or another on the project, a superhighway for ocean freighters. Port of Milwaukee director Harry C. Brockel forecast just before the Seaway opened in 1959 that "The St. Lawrence Seaway will be the greatest single development of this century in its effects on Milwaukee's future growth and prosperity." Lester Olsen, president of the Milwaukee Association of Commerce, said, "The magnitude and potential of the St. Lawrence Seaway and the power project stir the imagination of the world." The seaway's opening is often credited with making the
Erie Canal The Erie Canal is a historic canal in upstate New York that runs east-west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway connecting the Atlantic Ocean to the Great Lakes, vastly reducing t ...
obsolete and causing the severe economic decline of several cities along the canal in
Upstate New York Upstate New York is a geographic region consisting of the area of New York State that lies north and northwest of the New York City metropolitan area. Although the precise boundary is debated, Upstate New York excludes New York City and Long Is ...
. But by the turn of the 20th century, the Erie Canal had already been largely supplanted by the railroads, which had been constructed across New York and could carry freight more quickly and cheaply. Upstate New York's economic decline was precipitated by numerous factors, only some of which had to do with the St. Lawrence Seaway. Under the Canada Marine Act (1998), the Canadian portions of the seaway were set up with a non-profit corporate structure; this legislation also introduced changes to federal ports. Great Lakes and seaway shipping generates $3.4 billion in business revenue annually in the United States. In 2002, ships moved 222 million tonnes of cargo through the seaway. Overseas shipments, mostly of inbound steel and outbound grain, accounted for 15.4 million tonnes, or 6.9%, of the total cargo moved. In 2004, seaway grain exports accounted for about 3.6% of U.S. overseas grain shipments, according to the U.S. Grains Council. In a typical year, seaway steel imports account for around 6% of the U.S. annual total. The toll revenue obtained from ocean vessels is about 25–30% of cargo revenue. The Port of Duluth shipped just over 2.5 million tonnes of grain, which is less than the port typically moved in the decade before the seaway opened
Lake Superior Lake Superior in central North America is the largest freshwater lake in the world by surface areaThe Caspian Sea is the largest lake, but is saline, not freshwater. and the third-largest by volume, holding 10% of the world's surface fresh wa ...
to deep-draft oceangoing vessels in 1959. International changes have affected shipping through the seaway. Europe is no longer a major grain importer; large U.S. export shipments are now going to South America, Asia, and Africa. These destinations make Gulf and West Coast ports more critical to 21st-century grain exports. Referring to the seaway project, a retired Iowa State University economics professor who specialized in transportation issues said, "It probably did make sense, at about the time it (the Seaway) was constructed and conceived, but since then everything has changed." Certain seaway users have been concerned about the low water levels of the Great Lakes that have been recorded since 2010.


Expansion proposal

The
Panama Canal The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a conduit ...
was completed in 1914 and also serves oceangoing traffic. In the 1950s, seaway designers chose not to build the locks to match the size of ships permitted by the 1914 locks at the Panama Canal (, known as the
Panamax Panamax and New Panamax (or Neopanamax) are terms for the size limits for ships travelling through the Panama Canal. The limits and requirements are published by the Panama Canal Authority (ACP) in a publication titled "Vessel Requirements". ...
limit). Instead, the seaway locks were built to match the smaller locks of Welland Canal, which opened in 1932. The seaway locks permit passage of a ship long by feet wide (the Seawaymax limit). The U.S. Army Corps of Engineers conducted a study to expand the St. Lawrence Seaway, but the plan was scrapped in 2011 because of tight budgets.


Locks in the St. Lawrence River

There are seven locks in the St. Lawrence River portion of the seaway. From downstream to upstream they are: # St. Lambert Lock— Saint Lambert, QC # Côte Ste. Catherine Lock— Sainte-Catherine, QC # Beauharnois Locks (two locks)— Melocheville, QC, at and # Snell Lock— Massena, NY #
Eisenhower Lock The Eisenhower Lock is one of the seven canal locks on the St Lawrence River leg of the St Lawrence Seaway. This lock provides a 38 foot lift for ships heading upstream. It is one of two locks located near Massena, New York. The lock was construct ...
Massena, NY # Iroquois Lock—
Iroquois The Iroquois ( or ), officially the Haudenosaunee ( meaning "people of the longhouse"), are an Iroquoian-speaking confederacy of First Nations peoples in northeast North America/ Turtle Island. They were known during the colonial years to ...
, ON, at Water Level Elevations: * Lake Ontario is above sea level. * The drop through Iroquois Lock is . * Lake St. Lawrence is above sea level. * The drop through Eisenhower Lock is . * The Wiley-Dondero Canal is above sea level. * The drop through Snell Lock is . * Lake St. Francis is above sea level . * The drop through Upper Beauharnois Lock is . * The Beauharnois Canal is above sea level. * The drop through Lower Beauharnois Lock is . * Lake St. Louis is above sea level. * The drop through Côte Ste. Catherine Lock is . * Laprairie Basin is above sea level. * The drop through St. Lambert Lock is . * The drop through the Lachine Rapids is a few feet. * Montreal Harbour is approximately above sea level.


Locks in the Welland Canal

There are eight locks on the Welland Canal. From the north to the south, there is lock 1 at Port Weller, followed by Lock 2 and then Lock 3, a site with a visitors' information centre and museum in
St. Catharines, Ontario St. Catharines is the largest city in Canada's Niagara Region and the sixth largest urban area in the province of Ontario. As of 2016, it has an area of , 136,803 residents, and a metropolitan population of 406,074. It lies in Southern Ontari ...
. There are four locks in
Thorold, Ontario Thorold is a city in Ontario, Canada, located on the Niagara Escarpment. It is also the seat of the Regional Municipality of Niagara. The Welland Canal passes through the city, featuring lock 7 and the Twin Flight Locks. History The first sur ...
, including twin-flight locks 4, 5 and 6, with Lock 7 leading up to the main channel. The Lake Erie level control lock sits in Port Colborne, Ontario.


Lock, channel dimensions, and additional statistical data

The size of vessels that can traverse the seaway is limited by the size of locks. Locks on the St. Lawrence and on the Welland Canal are long, wide, and deep. The maximum allowed vessel size is slightly smaller: long, wide, and deep. Many vessels designed for use on the Great Lakes following the opening of the seaway were built to the maximum size permissible by the locks, known informally as Seawaymax or Seaway-Max. Large vessels of the lake freighter fleet are built on the lakes and cannot travel downstream beyond the Welland Canal. On the remaining Great Lakes, these ships are constrained only by the largest lock on the Great Lakes Waterway, the Poe Lock at the
Soo Locks The Soo Locks (sometimes spelled Sault Locks but pronounced "soo") are a set of parallel locks, operated and maintained by the United States Army Corps of Engineers, Detroit District, that enable ships to travel between Lake Superior and the lowe ...
(at Sault Ste. Marie), which is long, wide and deep. A vessel's draft is another obstacle to passage on the seaway, particularly in connecting waterways such as the St. Lawrence River. The depth in the seaway's channels is (
Panamax Panamax and New Panamax (or Neopanamax) are terms for the size limits for ships travelling through the Panama Canal. The limits and requirements are published by the Panama Canal Authority (ACP) in a publication titled "Vessel Requirements". ...
-depth) downstream of
Quebec City Quebec City ( or ; french: Ville de Québec), officially Québec (), is the capital city of the Provinces and territories of Canada, Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Communauté métrop ...
, between Quebec City and Deschaillons, to Montreal, and upstream of Montreal. Channel depths and limited lock sizes meant only 10% of current oceangoing ships, which have been built much larger than in the 1950s, can traverse the entire seaway. Proposals to expand the seaway, dating from as early as the 1960s, have been rejected since the late 20th century as too costly. In addition, researchers, policy makers, and the public are much more aware of the environmental issues that have accompanied seaway development and are reluctant to open the Great Lakes to more invasions of damaging species, as well as associated issues along the canals and river. Questions have been raised as to whether such infrastructure costs could ever be recovered. Lower water levels in the Great Lakes have also posed problems for some vessels in recent years, and pose greater issues to communities, industries, and agriculture in the region. While the seaway is (as of 2010) mostly used for shipping
bulk cargo Bulk cargo is commodity cargo that is transported unpackaged in large quantities. Description Bulk cargo refers to material in either liquid or granular, particulate form, as a mass of relatively small solids, such as petroleum/ crude oi ...
, the possibility of its use for large-scale
container shipping Containerization is a system of intermodal freight transport using intermodal containers (also called shipping containers and ISO containers). Containerization is also referred as "Container Stuffing" or "Container Loading", which is the pro ...
is under consideration as well. If the expansion project goes ahead,
feeder ship Feeder vessels or feeder ships are medium-size freight ships. In general, a feeder designates a seagoing vessel with an average capacity of . Feeders collect shipping containers from different ports and transport them to central container termina ...
s would take containers from the port of Oswego on Lake Ontario in upstate
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to
Melford International Terminal Melford International Terminal is a proposed Canadian marine-rail container terminal to be built in the community of Middle Melford in Guysborough County, Nova Scotia. If constructed, Melford International Terminal would be the closest deep-wat ...
in
Nova Scotia Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland". Most of the population are native Eng ...
for transfer to larger oceangoing ships. A website hosts measurements of wind, water, levels and water temperatures. A real-time interactive map of seaway locks, vessels, and ports is available at. The
NOAA The National Oceanic and Atmospheric Administration (abbreviated as NOAA ) is an United States scientific and regulatory agency within the United States Department of Commerce that forecasts weather, monitors oceanic and atmospheric conditio ...
-funded
Great Lakes Water Level Dashboard Great may refer to: Descriptions or measurements * Great, a relative measurement in physical space, see Size * Greatness, being divine, majestic, superior, majestic, or transcendent People * List of people known as "the Great" *Artel Great (born ...
compiles statistics on water depth at various points along the seaway.


Ecology

To create a navigable channel through the
Long Sault Long Sault was a rapid in the St. Lawrence River upstream and west of Cornwall, Ontario. ''Sault'' is the archaic spelling of the French word ''saut'', meaning rapids. The Long Sault created a navigation barrier along the river for much of its ...
rapids and to allow
hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...
stations to be established immediately upriver from
Cornwall, Ontario Cornwall is a city in Eastern Ontario, Canada, situated where the provinces of Central Canada, Ontario and Quebec and the state of New York (state), New York converge. It is the seat of the United Counties of Stormont, Dundas and Glengarry, Unit ...
, and
Massena, New York Massena is a town in St. Lawrence County, New York, United States. Massena is along the county's northern border, just south of the St. Lawrence River and the Three Nations Crossing of the Canada–United States border. The population was 12,8 ...
, Lake St. Lawrence was created behind a dam. This required the condemnation and acquisition by the government of all the properties of six villages and three hamlets in Ontario; these are now collectively known as The Lost Villages. The area was flooded on July 1, 1958, creating the lake. There was also inundation on the New York side of the border, and the village of Louisville Landing was submerged. A notable adverse environmental effect of the operation of the seaway has been the introduction of numerous
invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad ...
of aquatic animals into the Great Lakes Basin. The zebra mussel has been most damaging in the Great Lakes and through its invasion of related rivers, waterways, and city water facilities. Invasive species and artificial water level controls imposed by the seaway have had a negative impact on recreational fishing. The seaway, along with the St. Lawrence River it passes through, also provides opportunities for outdoor recreation, such as
boating Boating is the leisurely activity of travelling by boat, or the recreational use of a boat whether Motorboat, powerboats, Sailing, sailboats, or man-powered vessels (such as rowing and paddle boats), focused on the travel itself, as well as sp ...
,
camping Camping is an outdoor activity involving overnight stays away from home, either without shelter or using basic shelter such as a tent, or a recreational vehicle. Typically, participants leave developed areas to spend time outdoors in more nat ...
,
fishing Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from the natural environment, but may also be caught from stocked bodies of water such as ponds, canals, park wetlands and reservoirs. Fishing techniques inclu ...
, and
scuba diving Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface air supply. The name "scuba", an acronym for "Self-Contained Underwater Breathing Apparatus", was coined by Chris ...
. Of note, the Old Power House near Lock 23 (near Morrisburg, Ontario) became an attractive site for scuba divers. The submerged stone building has become covered with barnacles and is home to an abundance of underwater life. The seaway passes through the St. Lawrence River, which provides a number of divable
shipwreck A shipwreck is the wreckage of a ship that is located either beached on land or sunken to the bottom of a body of water. Shipwrecking may be intentional or unintentional. Angela Croome reported in January 1999 that there were approximately ...
s within recreational scuba limits (shallower than ). The region also offers technical diving, with some wrecks lying at . The water temperature can be as warm as during the mid- to late-summer months. The first of Lake Ontario is warmed and enters the St. Lawrence River, as the fast-moving water body has no thermocline circulation. On July 12, 2010, ''Richelieu'' (owned by Canada Steamship Lines) ran aground after losing power near the Côte-Sainte-Catherine lock. The grounding punctured a fuel tank, spilling an estimated of
diesel fuel Diesel fuel , also called diesel oil, is any liquid fuel specifically designed for use in a diesel engine, a type of internal combustion engine in which fuel ignition takes place without a spark as a result of compression of the inlet air and t ...
, covering approximately . The seaway and lock were shut down to help contain the spill.


International trade and tourism

The seaway is important for American and Canadian international trade. It handles 40–50 million annual tonnes of cargo. About 50% of this cargo carried travels to and from international ports in Europe, the Middle East, and Africa. The rest comprises coastal trade, or
short sea shipping The modern terms short-sea shipping (sometimes unhyphenated), marine highway, and motorways of the sea, and the more historical terms coastal trade, coastal shipping, coasting trade, and coastwise trade, all encompass the movement of cargo and pas ...
, between various American and Canadian ports. Among international shippers are found: *
Polsteam Polska Żegluga Morska known as Polsteam or PŻM, is a cargo ship operator based in Szczecin, Poland. Polsteam is a state-owned enterprise with around 3,000 employees. Company history Polsteam was founded in 1951, nationalizing the assets of two ...
, which maintains a fleet of dry-bulk only vessels that transit every two weeks from the Dutch town of
IJmuiden IJ_(digraph).html" ;"title="n IJ (digraph)">n IJ (digraph) and that should remain the only places where they are used. > IJmuiden () is a port city in the Netherlands, Dutch province of North Holland. It is the main town in the municipality ...
to
Duluth, Minnesota , settlement_type = City , nicknames = Twin Ports (with Superior), Zenith City , motto = , image_skyline = , image_caption = Clockwise from top: urban Duluth skyline; Minnesota ...
*
Fednav Group Fednav is a privately owned group of Canada, Canadian companies, divisions, and subsidiaries in the maritime transport industry.Fednav, 2007. ''Fednav Divisions''. Primarily involved in transporting over 30 million tonnes of bulk cargo and bre ...
, a private international dry-bulk only ocean transportation group, with routes between the Port of Antwerp and Sorel, Quebec, even in wintertime *
World Shipping In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the worl ...
Inc., a privately owned global logistics operation *
Canfornav Canadian Forest Navigation (Canfornav) is a Canadian shipping firm. It operates a fleet of close to four dozen bulk carriers. Most of these vessels' voyages are between ports on the North American Great Lakes or the St Lawrence Seaway The S ...
, a subsidiary of
Canfor Canfor Corporation is an integrated forest products company based in Vancouver, British Columbia. History The company traces its roots to the late 1930s when brothers-in-law John G. Prentice and L.L.G. "Poldi" Bentley (surname changed from Bloch ...
, which does dry bulk only and registers most of its vessels in
Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is geo ...
* American Steamship Company, a subsidiary of the
General American Transportation Corporation GATX Corporation is a railcar lessor that owns fleets in North America, Europe, and Asia. In addition, jointly with Rolls-Royce Limited, it owns one of the largest aircraft spare engine lease portfolios. It is headquartered in Chicago, Illinois. ...
(GATX) * Rand Logistics, which was formed from the acquisition of Lower Lakes Towing Ltd, and does not ship containers * McKeil Marine, headquartered in Hamilton, which provides service to Arctic ports *
Groupe Desgagnés Groupe Desgagnés is a Canadian shipping firm. It operates a fleet of nineteen vessels. Gross earnings in 2014 were around $230 million. Desgagnes Transarctik Desgagnes Transarctik, a subsidiary of Groupe Desgagnés, is partners with Arctic Co-ope ...
, * The Port of Montreal is the site of operations of **
Maersk Line Maersk Line or Maersk SeaLand is a Danish international container shipping company and the largest operating subsidiary of the Maersk Group, a Danish business conglomerate. Founded in 1928, it is the world's largest container shipping company by ...
, a unit of the A.P. Moller-Maersk Group ** Mediterranean Shipping Company ** Compagnie Maritime d'Affrètement / Compagnie Generale Maritime, a French transshipper **
Hapag-Lloyd Hapag-Lloyd AG is a German international shipping and container transportation company. Hapag-Lloyd was formed in 1970 through a merger of Hamburg-American Line (HAPAG) and North German Lloyd. History The company was formed on September 1, 1 ...
acquired the Port of Montreal docks of, along with the rest of,
CP Ships CP Ships was a large Canadian shipping company established in the 19th century. From the late 1880s until after World War II, the company was Canada's largest operator of Atlantic and Pacific steamships. Many immigrants travelled on CP ships fr ...
in 2005 ** Orient Overseas Container Line, a Hong Kong-based multinational * Arrimage Quebec, which has stevedoring operations in
Baie-Comeau Baie-Comeau (; 2021 city population 20,687; CA population 26,643) is a city located approximately north-east of Quebec City in the Côte-Nord region of the province of Quebec, Canada. It is located on the shores of the Saint Lawrence River nea ...
, Becancour,
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...
, Cote-Sainte-Catherine, Gaspe, Gros-Cacouna,
Hamilton Hamilton may refer to: People * Hamilton (name), a common British surname and occasional given name, usually of Scottish origin, including a list of persons with the surname ** The Duke of Hamilton, the premier peer of Scotland ** Lord Hamilt ...
,
Matane Matane is a town on the Gaspé Peninsula in Quebec, Canada, on the south shore of the Saint Lawrence River at the mouth of the Matane River. The town is the seat for the La Matanie Regional County Municipality. In addition to Matane itself, the ...
,
Oshawa Oshawa ( , also ; 2021 population 175,383; CMA 415,311) is a city in Ontario, Canada, on the Lake Ontario shoreline. It lies in Southern Ontario, approximately east of Downtown Toronto. It is commonly viewed as the eastern anchor of the G ...
, Pointe-au-Pic, Port Colborne, Portneuf,
Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
,
Rimouski Rimouski ( ) is a city in Quebec, Canada. Rimouski is located in the Bas-Saint-Laurent region, at the mouth of the Rimouski River. It has a population of 48,935 (as of 2021). Rimouski is the site of Université du Québec à Rimouski (UQAR), the C ...
, Saguenay, Sept-Iles, Sorel-Tracy,
St. Catharines St. Catharines is the largest city in Canada's Niagara Region and the sixth largest urban area in the province of Ontario. As of 2016, it has an area of , 136,803 residents, and a metropolitan population of 406,074. It lies in Southern Ontario ...
, and other ports in the Maritime provinces of Canada. The St. Lawrence Seaway (along with ports in Quebec) is the main route for Ontario grain exports to overseas markets. Its fees are publicly known, and were limited in 2013 to an increase of 3%. A trained pilot is required for any foreign trade vessel. A set of rules and regulations are available to help transit. Commercial vessel transit information is hosted on the U.S.
St. Lawrence Seaway Development Corporation The Great Lakes St. Lawrence Seaway Development Corporation (GLS) is an agency of the United States Department of Transportation that operates and maintains the U.S.-owned and operated facilities of the joint United States-Canadian St. Lawrence ...
website. Since 1997, international cruise liners have been known to transit the seaway. The
Hapag-Lloyd Hapag-Lloyd AG is a German international shipping and container transportation company. Hapag-Lloyd was formed in 1970 through a merger of Hamburg-American Line (HAPAG) and North German Lloyd. History The company was formed on September 1, 1 ...
''Christopher Columbus'' carried 400 passengers to
Duluth, Minnesota , settlement_type = City , nicknames = Twin Ports (with Superior), Zenith City , motto = , image_skyline = , image_caption = Clockwise from top: urban Duluth skyline; Minnesota ...
, that year. Since then, the number of annual seaway cruising passengers has increased to 14,000. Every year, more than 2,000 recreational boats, of more than 20 ft and one ton, transit the seaway. The tolls have been fixed for 2017 at $30 per lock. There is a $5 per lock discount for payment in advance. Lockages are scheduled 12 hours a day between the hours of 07:00 and 19:00 from June 15 to September 15. A list of organisations that serve the seaway in some fashion, such as chambers of commerce and municipal or port authorities, is available at the SLSDC website. A 56-page electronic "Great Lakes St. Lawrence Seaway System" Directory is published by Harbor House Publishers.


Map

''Map of the world Great Lakes and the St. Lawrence Seaway from 1959,'' depicting the entire length beginning at the
Gulf of St. Lawrence The Gulf of St. Lawrence () is the outlet of the North American Great Lakes via the St. Lawrence River into the Atlantic Ocean. The gulf is a semi-enclosed sea, covering an area of about and containing about of water, at an average depth of . ...
in the east to the westernmost terminus at Lake Superior.


See also

* Container on barge *
Glossary of nautical terms (A-L) This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th t ...
* * Great Lakes Waterway * Lachine Canal *
Lake Champlain Seaway The Lake Champlain Seaway was a canal project proposed in the late 19th century and considered as late as the 1960s to connect New York State's Hudson River and Quebec's St. Lawrence River with a deep-water canal. The objective was to allow easy sh ...
* Lake freighter *
Merchant vessel A merchant ship, merchant vessel, trading vessel, or merchantman is a watercraft that transports cargo or carries passengers for hire. This is in contrast to pleasure craft, which are used for personal recreation, and naval ships, which are us ...
* Navigability * Seawaymax *
Ship transport Maritime transport (or ocean transport) and hydraulic effluvial transport, or more generally waterborne transport, is the transport of people (passengers) or goods (cargo) via waterways. Freight transport by sea has been widely used throu ...
*
Soulanges Canal The Soulanges Canal is an abandoned shipping canal in Quebec, Canada. It follows the north shore of the Saint Lawrence River between Pointe-des-Cascades and Coteaux-Landing, bypassing the rapids between Lake Saint-Louis and Lake Saint-Francis. ...
*
Watercraft Any vehicle used in or on water as well as underwater, including boats, ships, hovercraft and submarines, is a watercraft, also known as a water vessel or waterborne vessel. A watercraft usually has a propulsive capability (whether by sail, ...
*
Waterway A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary b ...


References

Notes


Further reading

* Macfarlane, Daniel (2014). ''Negotiating a River: Canada, the US, and the Creation of the St. Lawrence Seaway''. Vancouver: UBC Press. * Parr, Joy (2010). '' Sensing Changes: Technologies, Environments, and the Everyday, 1953–2003''. Vancouver: UBC Press. * *
St. Lawrence Seaway Management Corporation The St. Lawrence Seaway Management Corporation (SLSMC), formerly known as the St. Lawrence Seaway Authority, is a nonprofit Canadian Corporation established in 1998 by the government of Canada, in partnership with Seaway users and other stakeho ...
(2006
"Seaway Handbook"
Cornwall, Ontario, Canada. *


External links


Tommy Trent's ABC's of the Seaway, a brochure for young people



The St Lawrence Seaway Development Corporation

"Stairways to the Seas"
''Popular Mechanics'', January 1959, pp. 97–103. Detail article with illustrations of lock system.
St. Lawrence Seaway April 25, 1959


* ttp://lostvillages.ca The Lost Villages Historical Society* Excerpt from the ''Illustrated London News'', January 11, 1862 describing th
''Canals of Canada''.

The Great Waterway: a site dedicated to tourism along the waterway from Lake Ontario to Cornwall and the Seaway Valley


* [http://www.cbc.ca/archives/categories/economy-business/transport/the-st-lawrence-seaway-gateway-to-the-world/st-lawrence-seaway-is-completed.html CBC Digital Archives – The St Lawrence Seaway: Gateway to the world]
Bibliography on Water Resources and International Law
See ''Great Lakes; St. Lawrence River and Seaway''. Peace Palace Library

*
St. Lawrence Waterway Project Report Clippings, 1921
Brock University Library Digital Repository * {{Authority control 1959 establishments in Canada Canada–United States relations Canals opened in 1959 Great Lakes Waterway International canals Locks of Canada Port authorities in Canada Ship canals Sea lanes Transport in Montérégie Water transport in Canada Water transportation in North America Water transportation in the United States Transport buildings and structures in Ontario