About the Great Lakes and St. Lawrence Region

The Great Lakes – St. Lawrence Basin is the largest source of surface freshwater in the world. The Basin contains over 21% of the world’s surface freshwater and is the primary water source for over 40 million people. The five Great Lakes – Superior, Michigan, Huron, Erie, and Ontario – and the St. Lawrence River are bordered by eight US states and two Canadian provinces.

Read more about the Great Lakes and St. Lawrence River here:

US Environmental Protection Agency

NOAA Great Lakes Environmental Research Lab

Environment Canada (St. Lawrence River)


Great Lakes region

Great Lakes depths