Where Are the Great Lakes Located? A Beginner’s Guide

The Great Lakes are located in east-central North America along the United States Canada border. The five lakes are Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario. They stretch more than 750 miles from west to east and form the largest connected freshwater system of its kind on Earth.

Four of the five Great Lakes are shared directly by the United States and Canada. Lake Michigan is entirely within the United States, although it is still part of the same connected Great Lakes system.

From west to east, the lakes are:

Lake Superior → Lake Michigan → Lake Huron → Lake Erie → Lake Ontario

Their location is important for much more than geography. The Great Lakes provide drinking water, support major cities and ports, influence regional weather, provide wildlife habitat, and form an important transportation route between the interior of North America and the Atlantic Ocean.

Where Are the Great Lakes Located on a Map?

The Great Lakes occupy a broad area between the central United States and southeastern Canada. Their western end reaches toward Minnesota and Wisconsin, while their eastern end extends to New York and Ontario.

A simple way to picture them is to follow the lakes from northwest to southeast and then east:

• Lake Superior sits at the northwestern end.
• Lake Michigan lies south of Lake Superior and is surrounded entirely by U.S. territory.
• Lake Huron sits east of Michigan and north of Lake Erie.
• Lake Erie lies farther south, between Michigan, Ohio, Pennsylvania, New York, and Ontario.
• Lake Ontario is the easternmost lake, between Ontario and New York.

The five lakes are not arranged in a straight line. They form a connected, irregular chain with rivers, straits, bays, islands, and smaller connecting waterways between them.

A Simple West-to-East Mental Map

If you are looking at a map and want to identify the lakes quickly, start with Lake Superior in the northwest.

Move southeast and you will encounter the Lake Michigan–Lake Huron area. Lake Michigan is the lake west of Michigan’s Lower Peninsula, while Lake Huron is on its eastern side.

Continue south and east to Lake Erie, the relatively shallow lake along the southern edge of the Great Lakes system.

Finally, move east to Lake Ontario, which sits between Ontario and New York and provides the outlet toward the St. Lawrence River.

This west-to-east approach is more useful for understanding the geography than simply memorizing the names.

Which Countries Are the Great Lakes In?

The Great Lakes are shared by the United States and Canada.

Canada’s direct Great Lakes shoreline is in Ontario, while eight U.S. states are recognized as Great Lakes states: Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, Pennsylvania, and New York.

The United States

The United States borders all five Great Lakes in some way except that Lake Michigan is completely within U.S. territory.

The eight Great Lakes states are:

State	Great Lakes Shoreline
Minnesota	Lake Superior
Wisconsin	Lake Superior, Lake Michigan
Illinois	Lake Michigan
Indiana	Lake Michigan
Michigan	Lake Superior, Lake Michigan, Lake Huron, Lake Erie
Ohio	Lake Erie
Pennsylvania	Lake Erie
New York	Lake Erie, Lake Ontario

Michigan has the most extensive direct connection to the five lakes, touching four of them.

Canada

Ontario is the Canadian province with direct shorelines on the Great Lakes. It borders:

• Lake Superior
• Lake Huron
• Lake Erie
• Lake Ontario

Major Ontario communities connected to the Great Lakes include Toronto, Hamilton, Windsor, Sarnia, Thunder Bay, and Kingston.

The St. Lawrence River also connects the Great Lakes system to Quebec and eventually to the Atlantic Ocean, but Quebec does not have a direct shoreline on any of the five Great Lakes.

Where Is Each Great Lake Located?

Each lake has its own geographic position and surrounding communities. Understanding them individually makes the entire system much easier to visualize.

Where Is Lake Superior?

Lake Superior is the northwesternmost Great Lake. It borders Minnesota, Wisconsin, Michigan, and Ontario.

Its southern shoreline includes Minnesota, Wisconsin, and Michigan’s Upper Peninsula, while Ontario forms much of its northern shoreline.

Important communities around Lake Superior include:

• Duluth, Minnesota
• Superior, Wisconsin
• Marquette, Michigan
• Sault Ste. Marie, Michigan
• Thunder Bay, Ontario

Lake Superior is the largest of the five Great Lakes by surface area and contains the greatest volume of water. It is also the deepest of the Great Lakes.

Its water flows eastward through the St. Marys River toward Lake Huron.

Where Is Lake Michigan?

Lake Michigan is located entirely within the United States. It is bordered by Michigan, Wisconsin, Illinois, and Indiana.

Its shoreline reaches from the northern Great Lakes region down toward Chicago and northwestern Indiana.

Major cities and communities near Lake Michigan include:

• Chicago, Illinois
• Milwaukee, Wisconsin
• Green Bay, Wisconsin
• Gary, Indiana
• Muskegon, Michigan

Lake Michigan is connected to Lake Huron through the Straits of Mackinac. Because the two lakes are connected by a wide waterway and have essentially the same water level, scientists often describe them as hydrologically inseparable even though they are traditionally counted as two Great Lakes.

Where Is Lake Huron?

Lake Huron lies between Michigan and Ontario. Michigan’s Lower Peninsula forms much of its western side, while Ontario borders its eastern and northern portions.

Major communities near Lake Huron include:

• Alpena, Michigan
• Port Huron, Michigan
• Sarnia, Ontario
• Owen Sound, Ontario
• Bay City, Michigan

Lake Huron is especially notable for its complex shoreline and numerous islands. It is also connected directly to Lake Michigan through the Straits of Mackinac.

Where Is Lake Erie?

Lake Erie is the southernmost of the five Great Lakes. It borders Michigan, Ohio, Pennsylvania, New York, and Ontario.

Important cities around Lake Erie include:

• Toledo, Ohio
• Cleveland, Ohio
• Sandusky, Ohio
• Erie, Pennsylvania
• Buffalo, New York
• Windsor, Ontario

Lake Erie is much shallower than the other Great Lakes. Its average depth is about 62 feet, compared with about 483 feet for Lake Superior.

Its shallow western basin and southern location also give it different physical and ecological characteristics from the deeper upper lakes.

Where Is Lake Ontario?

Lake Ontario is the easternmost Great Lake. It lies between southern Ontario and northern New York.

Major communities along or near the lake include:

• Toronto, Ontario
• Hamilton, Ontario
• Kingston, Ontario
• Rochester, New York
• Oswego, New York

Lake Ontario receives water from Lake Erie through the Niagara River. Water then leaves Lake Ontario through the St. Lawrence River, beginning the route toward the Atlantic Ocean.

Although Lake Ontario is the smallest Great Lake by surface area, it is relatively deep and holds considerably more water than its surface area alone might suggest.

How Are the Great Lakes Connected?

The Great Lakes are not five isolated lakes. They form a connected system through rivers, straits, and channels.

The main sequence is:

Lake Superior → St. Marys River → Lake Huron → St. Clair River → Lake St. Clair → Detroit River → Lake Erie → Niagara River → Lake Ontario → St. Lawrence River → Atlantic Ocean

Lake Michigan connects with Lake Huron through the Straits of Mackinac.

Lake Superior to Lake Huron

Water leaves Lake Superior through the St. Marys River near Sault Ste. Marie.

The river connects the two lakes and also contains the famous Soo Locks, which allow ships to navigate the difference in elevation between Lake Superior and Lake Huron.

Lake Huron to Lake Erie

From Lake Huron, water moves through the St. Clair River, enters Lake St. Clair, and then continues through the Detroit River into Lake Erie.

Lake St. Clair is an important part of the system, but it is not one of the five Great Lakes.

Lake Erie to Lake Ontario

Water leaves Lake Erie through the Niagara River.

Niagara Falls lies along this route. After passing through the Niagara River system, water reaches Lake Ontario.

Lake Ontario to the Atlantic Ocean

Lake Ontario is the final Great Lake in the main west-to-east sequence.

From Lake Ontario, water flows into the St. Lawrence River, which carries it toward the Atlantic Ocean.

This connection is one reason the Great Lakes are important to ocean-going and inland shipping.

What Is the Difference Between the Great Lakes and the Great Lakes Basin?

One of the most common geographic mistakes is treating the Great Lakes, Great Lakes Basin, and Great Lakes Region as if they mean exactly the same thing.

They do not.

The Great Lakes

The Great Lakes specifically refers to the five major lakes:

• Lake Superior
• Lake Michigan
• Lake Huron
• Lake Erie
• Lake Ontario

The wider Great Lakes system can also include their connecting channels and related waters.

The Great Lakes Basin

The Great Lakes Basin is the land area whose water drains into the Great Lakes and their connecting channels.

This means the basin is much larger than the visible shoreline.

Rain and snow that fall on land inside the basin can eventually reach one of the lakes through streams, rivers, groundwater, and other drainage routes. EPA describes the basin primarily through the watersheds that drain into the lakes and connecting channels.

This distinction matters because a place does not have to touch a Great Lake to be part of its drainage basin.

The Great Lakes Region

The Great Lakes Region is a broader geographic term. Depending on the organization or purpose, it can describe the states, province, communities, industries, ecosystems, and watersheds associated with the lakes.

For example, USGS uses a particular definition of the Great Lakes region that includes the lakes and drainage basins in several U.S. states. Other organizations may use broader boundaries.

For accurate writing, it is better to specify whether you mean the lakes themselves, their drainage basin, or the broader region.

Which Cities Are Located on the Great Lakes?

Some of North America’s largest cities are located directly on Great Lakes shorelines or along their connecting waterways.

City	State or Province	Great Lakes Connection
Duluth	Minnesota	Lake Superior
Chicago	Illinois	Lake Michigan
Milwaukee	Wisconsin	Lake Michigan
Detroit	Michigan	Detroit River
Cleveland	Ohio	Lake Erie
Toledo	Ohio	Lake Erie
Erie	Pennsylvania	Lake Erie
Buffalo	New York	Lake Erie
Rochester	New York	Lake Ontario
Toronto	Ontario	Lake Ontario
Hamilton	Ontario	Lake Ontario
Thunder Bay	Ontario	Lake Superior
Sarnia	Ontario	Lake Huron system
Windsor	Ontario	Detroit River

Chicago and Lake Michigan

Chicago sits on the southwestern shore of Lake Michigan. Its location helped make it a major transportation and commercial center.

The city also has connections to inland waterways that link the Great Lakes drainage system with the Mississippi River watershed, giving Chicago an unusual position between major North American water systems.

Detroit and the Detroit River

Detroit is located along the Detroit River, between Lake St. Clair and Lake Erie.

This means Detroit is closely tied to the Great Lakes system even though the city’s waterfront is on a connecting river rather than directly on the open waters of one of the five lakes.

Toronto and Lake Ontario

Toronto sits along the northwestern shore of Lake Ontario.

Its waterfront is part of one of the most heavily populated portions of the Great Lakes shoreline, and the lake has long influenced the city’s transportation, recreation, climate, and development.

Why Were the Great Lakes Formed in This Location?

The present-day Great Lakes were shaped largely by repeated glacial advances and retreats during the Ice Age.

How Glaciers Shaped the Great Lakes

Large ice sheets repeatedly advanced across the region. Moving ice eroded bedrock and enlarged existing low areas in the landscape.

The glaciers also transported and deposited enormous quantities of sediment.

As the climate warmed and the ice retreated, meltwater filled the excavated basins. Changes in drainage routes and the continued adjustment of the land helped shape the Great Lakes system that exists today. USGS describes glacial erosion, deposits, moraines, and bedrock features as major parts of the region’s geological history.

The lakes therefore are not simply giant depressions that filled with rain. Their present shapes reflect a long combination of bedrock geology, glacial erosion, sediment deposition, drainage changes, and post-glacial landscape adjustment.

Why Do the Lakes Have Different Shapes?

Each Great Lake developed within a different geological setting.

That is why:

• Lake Superior has a large and deep basin.
• Lake Michigan has a long north-south shape.
• Lake Huron has many islands and complex coastal features.
• Lake Erie is broad and relatively shallow.
• Lake Ontario is smaller in surface area but comparatively deep.

Their physical differences are documented in Great Lakes measurements maintained by EPA and other scientific agencies.

How Can You Tell Which Great Lake You Are Looking At?

If you are studying a map, these clues make identification much easier.

Lake Superior

Look for the large lake in the northwest, north of Wisconsin and Michigan’s Upper Peninsula.

Lake Michigan

Look for the large lake completely surrounded by U.S. states. It sits west of Michigan’s Lower Peninsula.

Lake Huron

Look east of Michigan’s Lower Peninsula. Its northern and eastern sides extend into Ontario, and its shoreline contains many islands and bays.

Lake Erie

Look south of Lake Huron. It is the long, shallow lake bordered by Ohio, Pennsylvania, New York, Michigan, and Ontario.

Lake Ontario

Look east of Lake Erie. It is separated from Lake Erie by the Niagara River and sits between Ontario and New York.

Remember the Names With “HOMES”

The word HOMES is a common memory trick:

• H — Huron
• O — Ontario
• M — Michigan
• E — Erie
• S — Superior

It is useful for remembering the names, but it does not represent their geographic order. For map reading, the west-to-east sequence is more helpful:

Superior → Michigan → Huron → Erie → Ontario

Why Does the Location of the Great Lakes Matter?

The geographic position of the Great Lakes has shaped the region’s environment, cities, industries, and transportation for centuries.

Freshwater Supply

The lakes are a major source of freshwater for communities in the United States and Canada. The Great Lakes Commission notes that the system supplies drinking water to more than 40 million people in the two countries.

Because so many communities depend on the lakes, water quality and ecosystem protection are major regional concerns.

Transportation and Shipping

The Great Lakes form an extensive inland waterway.

Ships transport commodities such as iron ore, grain, limestone, coal, salt, and manufactured products through the lakes and connecting waterways.

The system connects inland ports with the St. Lawrence Seaway and, ultimately, the Atlantic Ocean.

Weather and Climate

The lakes influence weather in nearby communities.

Because the water stores and releases heat differently from land, the lakes can moderate temperatures along parts of their shorelines. They can also contribute to lake-effect snow when cold air moves across relatively warmer lake water and picks up moisture.

The effect varies considerably from lake to lake and from one shoreline to another.

Wildlife and Ecosystems

The Great Lakes support diverse aquatic and coastal habitats, including wetlands, beaches, dunes, forests, islands, and river mouths.

The system supports thousands of plant and animal species, while its connecting waters provide habitat corridors between different environments.

Recreation

The lakes are also major recreational destinations.

Depending on the location, people use them for:

• Swimming
• Boating
• Fishing
• Kayaking
• Sailing
• Hiking
• Camping
• Birdwatching
• Beach trips
• Lighthouse visits

The experience can be very different from one lake to another. A rocky Lake Superior shoreline does not look or behave the same way as a sandy Lake Michigan beach or a sheltered Lake Ontario waterfront.

Common Misunderstandings About Great Lakes Geography

All Five Great Lakes Are Not Shared Equally by the Two Countries

Lake Michigan is entirely in the United States. The other four have shorelines in both the United States and Canada.

All Great Lakes States Do Not Border Every Lake

The eight Great Lakes states have different shoreline connections. Michigan touches four lakes, while Illinois and Indiana touch only Lake Michigan, for example.

Lake St. Clair Is Not One of the Five Great Lakes

Lake St. Clair sits between Lake Huron and Lake Erie and is an important part of the connecting waterway, but it is not counted as one of the five Great Lakes.

The Great Lakes Are Not Oceans

They are freshwater lakes, not seas or oceans. However, their enormous size means they can produce large waves, strong currents, storms, and hazardous boating conditions.

The Great Lakes Do Not End at Lake Ontario

The Great Lakes system continues beyond Lake Ontario through the St. Lawrence River toward the Atlantic Ocean.

Frequently Asked Questions

Where Are the Great Lakes Located?

The Great Lakes are located in east-central North America between the United States and Canada. They extend more than 750 miles from west to east, from the Lake Superior area toward Lake Ontario and the St. Lawrence River.

What Are the Five Great Lakes?

The five Great Lakes are Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario.

Which Great Lake Is Entirely in the United States?

Lake Michigan is the only Great Lake located entirely within the United States.

Which Canadian Province Has the Great Lakes?

Ontario has direct shorelines on Lake Superior, Lake Huron, Lake Erie, and Lake Ontario.

How Many U.S. States Border the Great Lakes?

Eight U.S. states are recognized as Great Lakes states: Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, Pennsylvania, and New York.

Does Michigan Touch All Five Great Lakes?

No. Michigan touches four Great Lakes: Superior, Michigan, Huron, and Erie. It does not border Lake Ontario.

Is Chicago on a Great Lake?

Yes. Chicago is located on the southwestern shore of Lake Michigan.

Is Toronto on a Great Lake?

Yes. Toronto is located on the northern shore of Lake Ontario.

Which Great Lake Is the Largest?

Lake Superior is the largest Great Lake by surface area and also contains the greatest volume of water.

Which Great Lake Is the Smallest?

Lake Ontario is the smallest of the five Great Lakes by surface area.

Which Great Lake Is the Shallowest?

Lake Erie is the shallowest Great Lake by average and maximum depth. EPA lists its average depth at about 62 feet and its maximum depth at about 210 feet.

Are the Great Lakes Freshwater?

Yes. The Great Lakes are freshwater lakes and together form one of the world’s largest freshwater systems.

Do the Great Lakes Connect to the Ocean?

Yes. Water eventually flows from the Great Lakes through Lake Ontario and the St. Lawrence River to the Atlantic Ocean.

Were the Great Lakes Formed by Glaciers?

Glacial activity played a major role in shaping the modern Great Lakes. Repeated ice-sheet advances eroded the landscape, while retreating glaciers left sediments and altered drainage patterns.

Conclusion

The Great Lakes are located in east-central North America along the United States Canada border. From west to east, they are Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario.

Their geography becomes much easier to understand when the lakes are viewed as one connected system rather than five separate bodies of water. Lake Superior feeds Lake Huron, Lake Michigan connects with Lake Huron through the Straits of Mackinac, Lake Huron connects to Lake Erie through the St. Clair–Detroit waterway, and Lake Erie drains into Lake Ontario through the Niagara River. From Lake Ontario, water continues through the St. Lawrence River toward the Atlantic Ocean.

The distinction between the Great Lakes, Great Lakes Basin, and Great Lakes Region is also important. The lakes are the five major bodies of water; the basin is the surrounding land that drains into the system; and the region is a broader geographic term that can include communities, ecosystems, industries, and watersheds connected to the lakes.

Their location has shaped North American transportation, cities, freshwater resources, wildlife, climate, and recreation. That combination of geography and importance is what makes the Great Lakes one of the defining natural features of the continent.