Water Volume: 5,500 cubic miles (22,809 cubic
km), 90% of U.S. supply, 18% of world supply
Water Surface Area: 95,000 square miles (245,759
square km). Largest surface area of freshwater in the world.
Shoreline Length: 10,210 miles (17,017 km).
- Residential - U.S. 26.5%, Canada 18.6%;
- Commercial / Industrial - U.S. 6.7%, Canada 2.6%;
- Agricultural - U.S. 1.5%, Canada 8.2%;
- Other - U.S. 65.3%, Canada 70.6% (Canada includes transportation/communications,
recreation, extraction, water, wetlands, forestry, grassland,
barren; U.S. includes public, beaches, forests, barren lands)
Population: 35 million.
Outlets: St. Lawrence River and Chicago Sanitary
& Ship Canal
Retention Times (amount of time it takes for lakes
to get rid of pollutants):
- Lake Superior: 191 years
- Lake Michigan: 99 years
- Lake Huron: 22 years
- Lake Ontario: 6 years
- Lake Erie: 2.6 years
$4 billion sports fishery industry.
250 species of fish.
Provides drinking water for 40 million people. Provides 56 billion
gallons of water per day for municipal, agricultural, and industrial
Commercial shipping of 200 million tons over 1,270 mile route.
Provides power generation and cooling water.
Produces 90% of iron ore. Also, 58% of automobiles in the U.S.
and Canada are manufactured in the Great Lakes basin.
1,000 mile international border.