The Five Great Lakes are a group of large freshwater lakes in North America. Students need to know their names, locations, and basic map order because the lakes are important to United States and Canadian geography. The memory aid HOMES helps students remember all five lakes quickly and accurately.
This cheat sheet gives a simple way to connect each letter to a lake name.
HOMES stands for Huron, Ontario, Michigan, Erie, and Superior. Lake Superior is the largest and farthest northwest, while Lake Ontario is the farthest east. Lake Michigan is the only Great Lake located entirely in the United States.
The lakes are connected to each other and form an important water route for trade, travel, and ecosystems.
Key Facts
- HOMES stands for Huron, Ontario, Michigan, Erie, and Superior.
- The five Great Lakes are Lake Huron, Lake Ontario, Lake Michigan, Lake Erie, and Lake Superior.
- Lake Superior is the largest Great Lake by surface area and holds the most freshwater.
- Lake Michigan is the only Great Lake located completely within the United States.
- Lake Ontario is the smallest Great Lake by surface area and is the farthest east.
- Lake Erie is the shallowest Great Lake and is located south of Lake Huron and west of Lake Ontario.
- A west-to-east order that is useful for maps is Superior, Michigan, Huron, Erie, Ontario.
- The Great Lakes border eight U.S. states and two Canadian provinces.
Vocabulary
- Great Lakes
- The Great Lakes are five large freshwater lakes in North America shared by the United States and Canada.
- HOMES
- HOMES is a mnemonic that helps students remember Huron, Ontario, Michigan, Erie, and Superior.
- Mnemonic
- A mnemonic is a memory tool that uses letters, words, or patterns to make information easier to remember.
- Freshwater
- Freshwater is water that has very little salt and is found in lakes, rivers, and streams.
- Border
- A border is a line or area where two places, such as states or countries, meet.
- Region
- A region is an area that shares common features, such as location, climate, or geography.
Common Mistakes to Avoid
- Mixing up Lake Michigan and Lake Huron is wrong because Lake Michigan is west of Lake Huron and lies entirely in the United States.
- Forgetting that HOMES includes all five lakes is wrong because each letter stands for one lake: Huron, Ontario, Michigan, Erie, and Superior.
- Calling the Great Lakes oceans is wrong because they are freshwater lakes, not saltwater oceans.
- Thinking Lake Ontario is in the middle is wrong because Lake Ontario is the farthest east of the five Great Lakes.
- Assuming all Great Lakes touch both the United States and Canada is wrong because Lake Michigan is completely within the United States.
Practice Questions
- 1 Write the five Great Lakes in the order of the HOMES mnemonic.
- 2 If a map labels Lake Superior, Lake Michigan, and Lake Erie, which two Great Lakes are missing?
- 3 Using west-to-east order, which lake comes after Lake Huron: Lake Erie or Lake Superior?
- 4 Explain why HOMES is a helpful memory aid for learning the Five Great Lakes.
Understanding Five Great Lakes (HOMES) Memory Aid
The Great Lakes were shaped by glaciers during the most recent Ice Age. Huge sheets of moving ice scraped and deepened the land over thousands of years. When the ice melted, water filled the basins it had helped create.
This history explains why the lakes are so large and why their shorelines have many bays, islands, cliffs, and sandy beaches. Together, they hold roughly one fifth of the world’s surface freshwater.
That water is not ocean water. It is fresh enough to support drinking water supplies, farms, forests, fish, and wetlands across a very large region.
The lakes form a connected drainage system, so water can travel a long way from the inland northwest toward the Atlantic Ocean. Water leaves Lake Superior through the St. Marys River and reaches Lake Huron.
Lake Michigan joins Lake Huron through the Straits of Mackinac. These two lakes are at the same water level and are connected so openly that some scientists describe them as one body of water. Water then moves through the St.
Clair River, Lake St. Clair, and the Detroit River before entering Lake Erie. From there, it flows along the Niagara River, over Niagara Falls, into Lake Ontario, and finally through the St.
Lawrence River toward the Atlantic Ocean. This route helps explain the positions of the lakes on a map.
People depend on the lakes in many ways. Major cities use their water for homes, schools, and businesses. Ships carry materials such as grain, iron ore, and stone between ports.
Locks help ships move around changes in water level, especially near Niagara Falls. The lakes are shared by the United States and Canada, so both countries must work together to protect the water. Pollution, plastic waste, invasive species, and harmful algae can damage habitats.
Lake Erie is especially likely to warm quickly because it is relatively shallow. Warm water and extra fertilizer washing from farms can help algae grow too much. This can make water unsafe and reduce oxygen for fish.
For map work, focus on shape and position instead of relying only on the memory word. Lake Superior sits like a broad upper cap. Lake Michigan is long and runs north to south.
Lake Huron lies to its east and has a rough shoreline with many islands. Lake Erie is a narrow lake farther south. Lake Ontario is east of Erie and closer to the St.
Lawrence River. Notice that the lakes do not sit in a simple straight line. A useful study habit is to trace the water route with a finger on a blank map, then label each lake from memory.
Check north, south, east, and west each time. This makes the names connected to real places rather than just a list of letters.