Great Lakes region

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The states and provinces shown in red all have shorelines on at least one of the Great Lakes. Great Lakes Region North America.svg
The states and provinces shown in red all have shorelines on at least one of the Great Lakes.

The Great Lakes region of North America is a bi-national CanadianAmerican region that includes portions of the eight U.S. states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania and Wisconsin as well as the Canadian province of Ontario. The region centers on the Great Lakes and forms a distinctive historical, economic, and cultural identity. A portion of the region also encompasses the Great Lakes Megalopolis.

North America Continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.

Canada Country in North America

Canada is a country in the northern part of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres, making it the world's second-largest country by total area. Canada's southern border with the United States is the world's longest bi-national land border. Its capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. As a whole, Canada is sparsely populated, the majority of its land area being dominated by forest and tundra. Consequently, its population is highly urbanized, with over 80 percent of its inhabitants concentrated in large and medium-sized cities, many near the southern border. Canada's climate varies widely across its vast area, ranging from arctic weather in the north, to hot summers in the southern regions, with four distinct seasons.

United States Federal republic in North America

The United States of America (USA), commonly known as the United States or America, is a country composed of 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.

Contents

The Great Lakes Commission, authorized by the region's American states and Province of Ontario, and the additional Canadian Province of Quebec, comprises a bi-national authority with specified powers to protect and preserve the water and environmental resources of the Great Lakes and surrounding waterways and aquifers. The Commission's authorities are confirmed by the Canadian and American federal governments, and by its constituent states and provinces. The states and provinces are represented in the Conference of Great Lakes and St. Lawrence Governors and Premiers.

Great Lakes Commission

The Great Lakes Commission is a United States interstate agency established in 1955 through the Great Lakes Basin Compact, in order to "promote the orderly, integrated and comprehensive development, use and conservation of the water resources of the Great Lakes Basin," which includes the Saint Lawrence River. The Great Lakes Commission provides policy development, coordination, and advocacy on issues of regional concern, as well as communication and research services.

Ontario Province of Canada

Ontario is one of the 13 provinces and territories of Canada and is located in east-central Canada. It is Canada's most populous province accounting for 38.3 percent of the country's population, and is the second-largest province in total area. Ontario is fourth-largest jurisdiction in total area when the territories of the Northwest Territories and Nunavut are included. It is home to the nation's capital city, Ottawa, and the nation's most populous city, Toronto, which is also Ontario's provincial capital.

Quebec Province of Canada

Quebec is one of the thirteen provinces and territories of Canada. It is bordered to the west by the province of Ontario and the bodies of water James Bay and Hudson Bay; to the north by Hudson Strait and Ungava Bay; to the east by the Gulf of Saint Lawrence and the province of Newfoundland and Labrador; and to the south by the province of New Brunswick and the U.S. states of Maine, New Hampshire, Vermont, and New York. It also shares maritime borders with Nunavut, Prince Edward Island, and Nova Scotia. Quebec is Canada's largest province by area and its second-largest administrative division; only the territory of Nunavut is larger. It is historically and politically considered to be part of Central Canada.

The Great Lakes region takes its name from the corresponding geological formation of the Great Lakes Basin, a narrow watershed encompassing The Great Lakes, bounded by watersheds to the region's north (Hudson Bay), west (Mississippi), east and south (Ohio). To the east, the rivers of St. Lawrence, Richelieu, Hudson, Mohawk and Susquehanna form an arc of watersheds east to The Atlantic.

Great Lakes Basin drainage basin of the Great Lakes in North America

The Great Lakes Basin consists of the Great Lakes and the surrounding lands of the states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin in the United States, and the province of Ontario in Canada, whose direct surface runoff and watersheds form a large drainage basin that feeds into the lakes. It is generally considered to also include a small area around and beyond Wolfe Island, Ontario, at the east end of Lake Ontario, which does not directly drain into the Great lakes, but into the Saint Lawrence River.

Hudson Bay A large body of saltwater in northeastern Canada

Hudson Bay is a large body of saltwater in northeastern Canada with a surface area of 1,230,000 km2 (470,000 sq mi). It drains a very large area, about 3,861,400 km2 (1,490,900 sq mi), that includes parts of southeastern Nunavut, Saskatchewan, most of Manitoba, Ontario, Quebec and indirectly through smaller passages of water to parts of North Dakota, South Dakota, Minnesota, and Montana. Hudson Bay's southern arm is called James Bay.

Mississippi River largest river system in North America

The Mississippi River is the second-longest river and chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system. Its source is Lake Itasca in northern Minnesota and it flows generally south for 2,320 miles (3,730 km) to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is 1,151,000 sq mi (2,980,000 km2), of which only about one percent is in Canada. The Mississippi ranks as the fourth-longest and fifteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.

The Great Lakes region, as distinct from the Great Lakes Basin, defines a unit of sub-national political entities defined by the U.S. states and the Canadian Province of Ontario encompassing the Great Lakes watershed, and the states and Province bordering one or more of the Great Lakes.

History

Map of the Great Lakes Basin. Great-Lakes-Basin.svg
Map of the Great Lakes Basin.

Prior to European settlement, Iroquoian people lived around Lakes Erie and Ontario, Algonquian peoples around most of the rest, and a variety of other indigenous nation-peoples including the Menominee, Ojibwa, Illinois, Pottawatmie, Huron, Shawnee, Erie, Fox, Miami, Meskwaki and Ho-Chunk (Winnebago). With the first permanent European settlements in the early seventeenth century, all these nation-peoples developed an extensive fur trade with French, Dutch, and English merchants in the St. Lawrence, Hudson and Mohawk Valleys, and Hudson's Bay, respectively.

Lake Erie one of the Great Lakes in North America

Lake Erie is the fourth-largest lake of the five Great Lakes in North America, and the eleventh-largest globally if measured in terms of surface area. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has the shortest average water residence time. At its deepest point Lake Erie is 210 feet deep.

Lake Ontario one of the Great Lakes in North America

Lake Ontario is one of the five Great Lakes of North America. It is surrounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the American state of New York, whose water boundaries meet in the middle of the lake. Ontario, Canada's most populous province, was named for the lake. Many of Ontario's most populous cities, including Toronto, Canada's most populous city, and Hamilton, are on the lake's northern or western shores. In the Huron language, the name Ontarí'io means "Lake of Shining Waters". Its primary inlet is the Niagara River from Lake Erie. The last in the Great Lakes chain, Lake Ontario serves as the outlet to the Atlantic Ocean via the Saint Lawrence River. It is the only Great Lake not to border the state of Michigan.

Algonquian peoples ethnic group

The Algonquian are one of the most populous and widespread North American native language groups. Today, thousands of individuals identify with various Algonquian peoples. Historically, the peoples were prominent along the Atlantic Coast and into the interior along the Saint Lawrence River and around the Great Lakes. This grouping consists of the peoples who speak Algonquian languages.

The prospects of fur monopolies and discovery of a fabled Northwest Passage to Asia generated sporadic but intense competition among the three most powerful northwest Europe imperial nations to control the territory. A century and a half of naval and land wars among France, The Netherlands and Britain resulted finally in British control of the region, from the Ohio River to the Arctic, and from the Atlantic to the Mississippi. Beyond the region, North American claims remained disputed among Britain, France, Spain and Russia.

Northwest Passage sea route north of North America

The Northwest Passage (NWP) is, from the European and northern Atlantic point of view, the sea route to the Pacific Ocean through the Arctic Ocean, along the northern coast of North America via waterways through the Canadian Arctic Archipelago. The eastern route along the Arctic coasts of Norway and Siberia is accordingly called the Northeast Passage (NEP).

Britain defeated France decisively at the Battle of the Plains of Abraham near Quebec City in 1759, and the Treaty of Paris (1763) that ended The Seven Years' War, known in America as the French and Indian War ceded the entire region to the victor. Britain's claims were intensely disputed by a confederation of Indians during Pontiac's Rebellion, which induced major concessions to still sovereign Indian nations; and by the Iroquois Confederacy, whose six member nations-Mohawk, Oneida, Onondaga, Cayuga, Seneca and Tuscarora-never conceded sovereignty to either Britain or, later, The United States. [1]

During the American Revolution, the region was contested between Britain and rebellious American colonies. Hoping for favorable claims of territorial control in an eventual peace treaty with Britain, American adventurers led by Kentucky militia leader George Rogers Clark briefly occupied village settlements, including Cahokia, Kaskaskia and Vincennes unopposed, with passive support from Francophone inhabitants. In the Peace of Paris (1784) Britain ceded what became known as The Northwest Territory, the area bounded by Great Lakes, Mississippi and Ohio rivers, and the eastern colonies of New York and Pennsylvania, to the fledgling United States. Britain, which may have entertained ambitions to repossess the area if America failed to govern it, retained control over its forts and licensed fur trade for fifteen years.

During the Confederacy Period of 1781–1789, the Continental Congress passed three ordinances whose authority was unclear regarding the region's governance on the American side. The Land Ordinance of 1784 established the broad outlines of future governance. The territory would be divided into six states, which would be given broad powers of constitutional instituting, and admitted to the nation as equal members. The Land Ordinance of 1785 specified the manner in which land would be distributed in the Territory, favoring sale in small parcels to settlers who would work their own farms.

The Northwest Ordinance of 1787 defined the political protocols by which American states south of the lakes would enter the union as political equals with the original thirteen colonies. The ordinance, adopted in its final form just before the writing of the United States Constitution, was a sweeping, visionary proposal to create what was at the time a radical experiment in democratic governance and economy. The Northwest Ordinance of 1787 prohibited slavery, restricted primogeniture, mandated universal public education, provided for affordable farm land to people who settled and improved it, and required peaceful, lawful treatment of the Indian population. The ordinance prohibited the establishment of state religion and established civic rights that foreshadowed the United States Bill of Rights. Civil rights included freedom from cruel and unusual punishment, trial by jury, and exemption from unreasonable search and seizure. States were authorized to organize constitutional conventions and petition for admission as states equal to the original thirteen. Five states evolved from its provisions: Ohio, Indiana, Michigan, Illinois, and Wisconsin. The northeastern section of Minnesota, from the Mississippi to St. Croix River, also fell under ordinance jurisdiction and extended the constitution and culture of the Old Northwest to the Dakotas. The surge of settlement generated tension culminating in the Battle of Fallen Timbers in 1794.

Britain, fearing that fast American settlement could lead to annexation of its western provinces, countered with The Constitution Act of 1791, granting limited self-government to Canadian provinces, and creating two new provinces out of Canada: Lower Canada (today's Quebec) and Upper Canada (Ontario).

Settlement and economic expansion on both sides accelerated after the 1825 opening of The Erie Canal, an astonishingly successful public venture that effectively integrated markets and commerce between the Atlantic seaboard and the region. The region on both sides of the border became a vast research and design laboratory for agricultural machinery and techniques. Owner-operator family farms transformed both demographics and ecology into a vast terrain of farmlands, producing primarily wheat and corn. In western New York and northeast Ohio, the St. Lawrence, Mohawk, and Hudson rivers provided outlets for commercial corn and wheat, while The Ohio River let agricultural products from western Pennsylvania and southern Ohio, Indiana and Illinois journey downstream to New Orleans. Mining, primarily soft metals of copper, zinc, and lead; and timber to supply rapidly expanding sawmills that supplied lumber for new settlements.

Agricultural and industrial production generated distinctive political and social cultures of independent republican producers, who consolidated an ideology of personal liberty, free markets, and great social visions, often expressed in religious terms and enthusiasms. The region's alliance of antislavery with free soil movements contributed troops and agricultural goods that proved critical in the Union's victory. The Homestead and Morrill Acts, donating federal land to extend the agrarian economic franchise, and support state universities, modeled western expansion and education for all future states.

The British-Canadian London Conference of 1866, and subsequent Constitution Act of 1867 analogously derived from political, and some military, turmoil in the former jurisdiction of Upper Canada, which was renamed and organized in the new dominion as the Province of Ontario. Like the provisions of the ordinance, Ontario prohibited slavery, made provisions for land distribution to farmers who owned their own land, and mandated universal public education.

Ford's River Rouge assembly plant 1941 River Rouge tool and die8b00276r.jpg
Ford's River Rouge assembly plant 1941

Industrial production, organization, and technology have made the region among the world's most productive manufacturing centers. Nineteenth-century proto-monopolies such as International Harvester, Standard Oil, and United States Steel established the pattern of American centralized industrial consolidation and eventual global dominance. The region hosted the world's greatest concentrations of production for oil, coal, steel, automobiles, synthetic rubber, agricultural machinery, and heavy transport equipment. Agronomy industrialized as well, in meat processing, packaged cereal products, and processed dairy products. In response to disruptions and imbalances of power resulting from so vast a concentration of economic power, industrial workers organized the Congress of Industrial Organizations, a coherent agricultural cooperative movement, and the Progressive politics led by Wisconsin's Governor and Senator Robert M. La Follette Sr.. State universities, professional social work, and unemployment and workers' compensation were some of the region's permanent contributions to American social policy.

The Great Lakes region has produced globally influential breakthroughs in agricultural technology, transportation and building construction. Cyrus McCormick's reaper, John Deere's steel plow, Joseph Dart (Dart's Elevator), and George Washington Snow's balloon-frame construction are some of innovations that made significant, global impact. The University of Chicago and Case Western Reserve University figured prominently in developing nuclear power. Automobile manufacture developed simultaneously in Ohio and Indiana and became centered in the Detroit area of Michigan. Henry Ford's movable assembly line drew on regional experience in meat processing, agricultural machinery manufacture, and the industrial engineering of steel in revolutionizing the modern era of mass production manufacturing. Chicago-based Montgomery Ward and Sears Roebuck companies complemented mass manufactures with mass retail distribution.

Chicago and Detroit carry important roles in the field of architecture. Chicago pioneered the world's first skyscraper, the Home Insurance Building designed by William LeBaron Jenney. Engineering innovation established Chicago from that time on to become one of the world's most influential epicenters of contemporary urban and commercial architecture. Equally influential was the 1832 invention of balloon-framing in Chicago which replaced heavy timber construction requiring massive beams and great woodworking skill with pre-cut timber. This new lumber could be nailed together by farmers and settlers who used it to build homes and barns throughout the western prairies and plains. Wisconsin-born, Chicago-trained Sullivan apprentice Frank Lloyd Wright designed prototypes for architectural designs from the commercial skylight atrium to suburban ranch house.

German-born Pennsylvania immigrant John A. Roebling invented steel wire rope, a pivotal part of suspension bridges he designed and whose construction he supervised in Pittsburgh, Cincinnati and Buffalo, based on earlier successful canal aqueducts. His most famous project was the Brooklyn Bridge.

Contributions to modern transportation include the Wright brothers' early airplanes, designed and perfected in their Dayton, Ohio mechanics' workshops; distinctive Great Lakes freighters, and railroad beds constructed of wooden ties and steel rails. The early nineteenth century Erie Canal and mid-twentieth century St. Lawrence Seaway expanded the scale and capacity of massive water-born freight.

Agricultural associations joined the nineteenth century Grange, which in turn generated the agricultural cooperatives that defined much of rural political economy and culture throughout the region. Fraternal, ethnic, and civic organizations extended cooperatives and supported local ventures from insurance companies to orphanages and hospitals. The region was the political base, and provided much leadership political parties in the region.

The region's greatest institutional contributions were major corporate, labor, educational and cooperative organizations. It hosted some of the most influential national and international corporations of the late nineteenth and early twentieth century monopoly age, including John Deere Plow, McCormack Reaper, New York Central and Erie railroads, Carnegie Steel, U.S. Steel, International Harvester and Standard Oil. In part to balance democratic representation against the economic and political power of these corporations, the region hosted industrial labor organization, consolidated agricultural cooperatives and state educational systems. The Big Ten Conference memorializes the nation's first region in which every state sponsored major research, technical-agricultural, and teacher-training colleges and universities. The Congress of Industrial Organizations grew out of the region's coal and iron mines; steel, automobile and rubber industries; and breakthrough strikes and contracts of Ohio, Indiana, and Michigan.

During World War II, the region became the global epicenter of motorized land vehicles, including cars, trucks and jeeps, as well as a major supplier of engine, transmission, and electrical components to the wartime aeronautics industry. Despite extreme labor shortages, the region increased mechanization, and absorbed large numbers of women and immigrant labor, to increase its food production.

Economy

Great Lakes region
State or Province
2008 GDP
millions
of USD
%
Flag of New York.svg New York 1,141,08825.2
Flag of Illinois.svg Illinois 633,69714.0
Flag of Ontario.svg  Ontario 584,46012.9
Flag of Pennsylvania.svg Pennsylvania 553,30112.2
Flag of Ohio.svg Ohio 471,50810.4
Flag of Michigan.svg Michigan 382,5448.4
Flag of Minnesota.svg Minnesota 262,8475.8
Flag of Indiana.svg Indiana 254,8615.6
Flag of Wisconsin.svg Wisconsin 240,4295.3
Flag of the United States.svg Flag of Canada (Pantone).svg TOTAL4,528,128100.00

Navigable terrain, waterways, and ports spurred an unprecedented construction of transportation infrastructure throughout the region. The region is a global leader in advanced manufacturing and research and development, with significant innovations in both production processes and business organization. John D. Rockefeller's Standard Oil set precedents for centralized pricing, uniform distribution, and controlled product standards through Standard Oil, which started as a consolidated refinery in Cleveland. Cyrus McCormick's Reaper and other manufacturers of agricultural machinery consolidated into International Harvester in Chicago. Andrew Carnegie's steel production integrated large-scale open-hearth and Bessemer processes into the world's most efficient and profitable mills. The largest, most comprehensive monopoly in the world, United States Steel, consolidated steel production throughout the region. Many of the world's largest employers began in the Great Lakes region.

Mass marketing in the modern sense was born in the region. Two competing Chicago retailers—Montgomery Ward and Sears Roebuck—developed mass marketing and sales through catalogues, mail-order distribution, and the establishment of their brand names as purveyors of consumer goods. The region's natural features, cultural institutions, and resorts make it a popular destination for tourism.

Advantages of accessible waterways, highly developed transportation infrastructure, finance, and a prosperous market base make the region the global leader in automobile production and a global business location. Henry Ford's movable assembly line and integrated production set the model and standard for major car manufactures. The Detroit area emerged as the world's automotive center, with facilities throughout the region. Akron, Ohio became the global leader in rubber production, driven by the demand for tires. Over 200 million tons of cargo are shipped annually through the Great Lakes. [2] [3] [4]

According to the Brookings Institution, if it stood alone as a country, the Great Lakes economy would be one of the largest economic units on Earth (with a $4.5-trillion gross regional product). This region also contains what area urban planners call the Great Lakes Megalopolis, which has an estimated 59 million people. Chicago is emerging as the third megacity in the United States, after the New York City and Los Angeles metropolitan areas, with a metro population approaching ten million. Cities along the Great Lakes have access to the Atlantic Ocean through the St. Lawrence Seaway, making them international ports.

Population centers

Rank Area State/
Province
ImageCSA/CMA
2009 population
Projected [5] [6] [7]
2025 population
Projected increase
2009–2025
1 Chicago IL-IN-WI 2009-09-18 3060x2040 chicago skyline.jpg 9,804,84510,935,1001,130,255
2 Toronto ON Skyline of Toronto viewed from Harbour.jpg 5,741,4007,408,0001,666,600
3 Detroit MI DowntownDetroit.jpg 5,327,7646,191,000863,236
4 Cleveland OH ClevelandSkyline.jpg 3,515,6463,795,658280,012
5 Milwaukee WI Milwaukee skyline.jpg 1,760,2681,913,000157,732
6 Ottawa – Gatineau ON-QC Downtown ottawa night.jpg 1,451,4151,596,556145,141
7 Grand Rapids MI Grdowntown.jpg 1,327,3661,530,000202,634
8 Buffalo NY BuffaloSkyline.jpg 1,203,4931,040,400-163,093
9 Rochester NY Skyline Rochester, NY.jpg 1,149,6531,248,60098,947
10 Hamilton ON HamiltonOntarioSkylineC.JPG 740,200954,858214,658
11 Toledo OH ToledoMorning.JPG 672,220672,2200
12 Kalamazoo MI Kalamazoo.jpg 524,030540,00015,970
13 Lansing MI Lansing skyline brobb 11 2009.jpg 523,609547,32523,716
14 Kitchener – Cambridge – Waterloo ON Arial photo of downtown Kitchener Ontario.JPG 492,400635,196142,796
15 London ON London, Ontario, Canada- The Forest City from above.jpg 492,200634,938142,738
16 Fort Wayne IN Reservoir Park Skyline.JPG 414,315455,62339,366
17 St. Catharines – Niagara ON SkylineNiagaraFalls.jpg 404,400521,676117,276
18 Windsor ON Windsor Ontario skyline.jpg 330,900426,86195,961
19 South Bend-Mishawaka IN South-bend-indiana.jpg 319,224
20 Erie PA Flagship-Niagara-Dobbins-Landing-Erie-July4-2009.jpg 280,985N/AN/A

Geography

The Palaeozoic strata are but parts of a great area of similar strata hundreds of feet in thickness. These strata decline gently southward from the great upland of the Laurentian Highlands of eastern Canada. The visible upland area of today was but a small part of the primeval continent with the remainder of it still buried under a Palaeozoic cover. The visible part was the last part of the primeval continent to sink under the advancing Palaeozoic seas. When the upland and its overlap of stratified deposits were elevated again, the overlapping strata must have had the appearance of a coastal plain. Of course that was long ago; since then the strata have eroded substantially and today possess neither the area nor the smooth form of their initial extent. This district may be considered an ancient coastal plain. As is always the case in the broad denudation of the gently inclined strata of such plains, the weaker layers are worn down in sub-parallel belts of lower land between the upland and the belts of more resistant strata, which rise in uplands.

Niagara Escarpment (in red) Niagara Escarpment map.png
Niagara Escarpment (in red)

Few better illustrations of this type of forms are to be found than that presented in the district of the Great Lakes. The chief upland belt or escarpment is formed by the firm Niagara limestone/dolostone, which takes its name from the gorge and falls cut through the upland by the Niagara River. As in all such forms, the Niagara Escarpment has a relatively strong slope or infacing escarpment on the side towards the upland, and a long gentle slope on the other side. Its relief is seldom more than 200 or 300 feet (91 m) and is generally small. Its continuity and its contrast with the associated lowlands on the underlying and overlying weak strata suffice to make it an important feature. The escarpment would lie straight east-west if the slant of the strata were uniformly to the south. However, the strata are somewhat warped and so the escarpment's course is strongly convex to the north in the middle, gently convex to the south at either end.

The escarpment begins where its determining limestone/dolostone begins, in west-central New York. There, it separates the lowlands that contain Lake Ontario from Lake Erie. It curves to the northwest through the Ontario province to the island belt that divides the Georgian Bay from Lake Huron. From there, it heads westward through the land-arm between Lake Superior and Lake Michigan and southwestward into the narrow points dividing Green Bay from Lake Michigan. Finally, it fades away with the thinning out of the limestone and is hardly traceable across the Mississippi River.

The arrangement of the Great Lakes closely matches the course of the lowlands worn on the two belts of weaker strata on either side of the Niagara escarpment. Lake Ontario, Georgian Bay and Green Bay occupy depressions in the lowland on the inner side of the escarpment. Lake Erie, Lake Huron and Lake Michigan lie in depressions in the lowland on the outer side. When the two lowlands are traced eastward, they become confluent after the Niagara limestone has faded away in central New York, and the single lowland is continued under the name of the Mohawk Valley. This is an east-west longitudinal depression that has been eroded on a belt of relatively weak strata between the resistant crystalline rocks of the Adirondacks on the north and the northern escarpment of the Appalachian plateau (Catskills-Helderbergs) on the south. Early in U.S. history, this provided a vital economic route between the Atlantic seaports and the U.S. interior.

In Wisconsin, the inner lowland has an interesting feature. It is a knob of resistant quartzites, known as Baraboo Ridge, rising from the buried upland floor through the partly denuded cover of lower Palaeozoic strata. This knob or ridge can be thought of as an ancient physiographic fossil, as it is an ancient monadnock having been preserved from destructive attacks of weather by burial under sea-floor deposits. It has been recently re-exposed through the erosion of its cover.

The occurrence of the lake basins in the lowland belts on either side of the Niagara escarpment is an abnormal feature. Ordinary erosion does not explain it. Glacial erosion has formed them through the glacial drift obstructing the normal outlet valleys and to crustal warping in connection with or independent of the glacial sheet.

Lake Superior is unlike the other lakes. The greater part of its basin occupies a depression in the upland area, independent of the overlap of Palaeozoic strata. The western half of the basin occupies a trough of synclinal structure. The Great Lakes are peculiar in receiving the drainage of but a small peripheral land area, enclosed by an ill-defined water-parting from the rivers that run to Hudson Bay or the Gulf of Saint Lawrence on the north and to the Gulf of Mexico on the south.

An upbound lake freighter passing the Detroit riverfront including the Renaissance Center. DetroitRiverlaker.jpg
An upbound lake freighter passing the Detroit riverfront including the Renaissance Center.

The three lakes of the middle group stand at practically the same level:

Lake Michigan and Lake Huron are connected by the Straits of Mackinac with the Mackinac Bridge spanning the straits. Lake Huron and Lake Erie are connected by the St. Clair River and Detroit River, with the small Lake St. Clair between them. The land northeast of the rivers is undergoing a slow elevation. The Niagara River connecting Lake Erie and Lake Ontario, with a fall of 326 feet (99 m) (160 feet (49 m) at the cataract) in 30 miles (48 km), is of very recent origin, as an older river would have a mature valley. The original valley that is thought to have connected the two depressions through the Niagara Escarpment is thought to have been at the present route of the Welland Canal, and to have been completely filled with glacial drift. The same is true for the St. Lawrence, where there may not have been an original valley. The Ontarian River that was a precursor to Lake Ontario is thought to have drained westward, and the St. Lawrence drainage to have been created by subsidence due to the weight of the ice sheet.

See also

Notes

  1. The Middle Ground: Empires, Indians and Republics in The Great Lakes Region 1603–1815, Richard White, 1991 Cambridge University Press
  2. "About Our Great Lakes -Great Lakes Basin Facts- NOAA Great Lakes Environmental Research Lab (GLERL)". Archived from the original on 8 March 2012. Retrieved 7 May 2016.
  3. "Economy of the Great Lakes Region" . Retrieved 7 May 2016.
  4. U.S Army Corps of Engineers (January 2009).Great Lakes Navigation System: Economic Strength to the Nation Archived 2011-07-18 at the Wayback Machine . Retrieved on July 27, 2010.
  5. "Home - Federation for American Immigration Reform". Archived from the original on 17 March 2012. Retrieved 7 May 2016.
  6. "Ontario Population Projections" . Retrieved 7 May 2016.
  7. Institut de la statistique Quebec Archived 2003-12-07 at the Wayback Machine

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The Snowbelt is the region near the Great Lakes in North America where heavy snowfall in the form of lake-effect snow is particularly common. Snowbelts are typically found downwind of the lakes, principally off the eastern and southern shores. Lake-effect snow occurs when cold air moves over warmer water, taking up moisture that later precipitates as snow when the air moves over land and cools. The lakes produce snowsqualls and persistently cloudy skies throughout the winter, as long as air temperatures are colder than water temperatures, or until a lake freezes over.

Early Lake Erie

Early Lake Erie was a prehistoric proglacial lake that existed at the end of the last ice age approximately 13,000 years ago. The early Erie fed waters to Glacial Lake Iroquois.

The Niagara Frontier refers to the stretch of land south of Lake Ontario and Lake Erie and extending westward to Cleveland, Ohio. The term dates to the War of 1812. This only includes the land east of the Niagara River and south of Lake Erie within the United States. The western side of the Niagara River on the Canada/Ontario side is the Niagara Peninsula and is considered part of the Golden Horseshoe.

Geography of Ontario

Ontario is located in East/Central Canada. It is Canada's second largest province in total land area. Its physical features vary greatly from the Mixedwood Plains in the southeast to the boreal forests and tundra in the north. Ontario borders Manitoba to the west, Hudson Bay and James Bay to the north, Quebec to the east, and the Great Lakes and the United States to the south. The province is named for Great Lake Ontario, an adaptation of the Iroquois word Onitariio, meaning "beautiful lake", or Kanadario, variously translated as "beautiful water". There are approximately 250,000 lakes and over 100,000 kilometres (62,000 mi) of rivers in the province.

Lake Erie Basin

Lake Erie Basin consists of Lake Erie and surrounding watersheds, which are typically named after the river, creek, or stream that provides drainage into the lake. The watersheds are located in the states of Indiana, Michigan, New York, Ohio, and Pennsylvania in the United States, and in the Province of Ontario in Canada. The basin is part of the Great Lakes Basin and Saint Lawrence River Watershed, which feeds into the Atlantic Ocean. 80% of the lake's water flows in from the Detroit River, with only 9% coming from all of the remaining watersheds combined. A littoral zone serves as the interface between land and lake, being that portion of the basin where the lake is less than 15 feet (4.6 m) in depth.

Laurentian Upland mountainous region in North America

The Laurentian Upland is a physiographic region which, when referred to as the "Laurentian Region" or the Grenville geological province, is recognized by Natural Resources Canada as one of five provinces of the larger Canadian Shield physiographic division. The United States Geological Survey recognizes the Laurentian Upland as the larger general upland area of the Canadian Shield.

Great Lakes Megalopolis Megaregion of the U.S. and Canada

The Great Lakes Megalopolis consists of the group of metropolitan areas in North America largely in the Great Lakes region and along the Saint Lawrence Seaway. It extends from the Midwestern United States in the south and west to western Pennsylvania and Upstate New York in the east and northward through Southern Ontario into southwestern Quebec in Canada. It is the most populated and largest megalopolis in North America.

Eastern Great Lakes lowland forests

The Eastern Great Lakes lowland forests is a temperate broadleaf and mixed forest ecoregion of North America, mostly in eastern Canada.

Eastern Great Lakes and Hudson Lowlands (ecoregion) ecoregion in the United States

The Eastern Great Lakes and Hudson Lowlands region extends along the south shores of Lake Erie and Lake Ontario and the St. Lawrence River to Lake Champlain, and south down the Hudson River. It is primarily within the state of New York, with smaller portions in Pennsylvania and Ohio. In the north it meets the Mixedwood Plains Ecozone of Canada. It is mostly temperate deciduous forest and agricultural land.

Mixedwood Plains Ecozone (Canada) Canadian ecozone with the most southerly extent

The Mixedwood Plains Ecozone is the Canadian ecozone with the most southern extent, covering all of southwestern Ontario, and parts of central and northeastern Ontario and southern Quebec along the Saint Lawrence River. It was originally dominated by temperate deciduous forest growing mostly on limestone covered by glacial till. It is the smallest ecozone in Canada, but it includes the country's most productive industrial and commercial region, and is home to nearly half of Canada's population, including its two largest cities, Toronto, Ontario and Montreal, Quebec. Hence, little of the original forest cover remains, making protection of the remaining forests a high conservation priority. This ecozone includes two regions described by J.S. Rowe in his classic Forest Regions of Canada: the entire Deciduous Forest Region, and the southern portions of the Great Lakes-St. Lawrence Forest Region. In the province of Ontario, the Ontario Ministry of Natural Resources maps this area as Site Regions 6E and 7E.

Erie Plain lacustrine plain that borders Lake Erie in North America

The Erie Plain is a lacustrine plain that borders Lake Erie in North America. From Buffalo, New York, to Cleveland, Ohio, it is quite narrow, but broadens considerably from Cleveland around Lake Erie to Southern Ontario, where it forms most of the Ontario peninsula. The Erie Plain was used in the United States as a natural gateway to the North American interior, and in both the United States and Canada the plain is heavily populated and provides very fertile agricultural land.

Saint Lawrence River Divide hydrological divide in eastern North America


The Saint Lawrence River Divide is a continental divide in central and eastern North America that separates the Great Lakes-St. Lawrence River Basin from the southerly Atlantic Ocean watersheds. Water, including rainfall and snowfall, lakes, rivers and streams, north and west of the divide, drains into the Gulf of St. Lawrence or the Labrador Sea; water south and east of the divide drains into the Atlantic Ocean or Gulf of Mexico. The divide is one of six continental divides in North America that demarcate several watersheds that flow to different gulfs, seas or oceans.

Portage Escarpment

The Portage Escarpment is a major landform in the U.S. states of Ohio, Pennsylvania, and New York which marks the boundary between the Till Plains to the north and west and the Appalachian Plateau to the east and south. The escarpment is the defining geological feature of New York's Finger Lakes region. Its proximity to Lake Erie creates a narrow but easily traveled route between upstate New York and the Midwest. Extensive industrial and residential development occurred along this route.

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