The Great Lakes — Superior, Michigan, Huron, Erie, and Ontario — form the largest group of freshwater lakes on Earth, holding roughly 21% of the world's surface fresh water. Together they border eight US states and two Canadian provinces, creating a geographic and economic powerhouse that has shaped American history since before the nation's founding. But can you name every state that touches each lake?

This quiz challenges your knowledge of one of America's most important geographic features. Some answers are obvious — everyone knows Michigan borders the Great Lakes (it's literally shaped by them). But can you remember which states touch Lake Erie? Or that only one US state borders Lake Ontario? The Great Lakes region is home to major cities like Chicago, Detroit, Cleveland, and Milwaukee, and understanding which states share these vital waterways is key to understanding Midwestern geography and economy.

The Great Lakes also play a crucial role in American weather patterns. Lake-effect snow can dump feet of snow on cities like Buffalo and Erie, while lake breezes moderate summer temperatures along the shorelines. The lakes support massive shipping operations, with iron ore, coal, and grain moving through their waters. Ecologically, they're home to unique fish species and fragile ecosystems facing challenges from invasive species like zebra mussels. Take this quiz to test your knowledge of America's inland seas and the states that depend on them.