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About Our Great Lakes : Lake by Lake Profiles
Introduction | Background |
Ecology | Economy
Great Lakes Facts | Threats
| Lake by Lake Profiles | Tour |
Lake Superior is the largest of the Great Lakes
and ranks as the second largest lake in the world.
Lake Superior Basin Statistics
Length |
350 mi / 563 km |
Breadth |
160 mi / 257 km |
Depth |
489 ft / 149 m average
1,333 ft / 406 m maximum |
Shoreline Length |
2,730 miles / 4393 km (including islands) |
Volume |
2,935 cubic mi /
12,232 cubic km |
Water Surface Area |
31,700 square miles /
82,097 square km |
Retention/Replacement Time |
191 years |
Outlet |
St. Marys River to Lake Huron
Levels regulated by international agreements |
Surface Area in U.S. |
20,598 square miles / 53,350 square km |
Population |
444,000 U.S. /
229,000 Canada |
Source: Lake Superior Basin map produced
by Michigan Sea Grant/Michigan State University Extension. |
Lake Michigan is
the third largest of the Great Lakes and ranks as the fifth
largest lake in the world.
Lake Michigan Basin Statistics
Length |
307 mi / 494 km |
Breadth |
118 mi /190 km |
Depth |
279 ft / 85 m average
923 ft / 281 m maximum |
Volume |
1,180 cubic mi /
4,918 cubic km |
Shoreline Length |
1,640 mi
/ 2,639 km (including islands) |
Water Surface Area |
22,300 square mi /
57,753 square km |
Surface Area in U.S. |
22,300 square mi /
57,753 square km |
Retention/Replacement Time |
99 years |
Outlet |
Straits of Mackinac to Lake Huron |
Population |
12,052,743 U.S. |
Source: The Lake Michigan Basin bathymetry
map was produced by NOAA (GLERL and National
Geophysical Data Center).
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Lake Huron is the second largest of the Great
Lakes and ranks as the fourth largest lake in the world.
Lake Huron Basin Statistics
Length |
206 mi / 332 km |
Breadth |
183 mi / 295 km |
Depth |
195 ft / 59 m average
750 ft / 229 m maximum |
Volume |
849 cubic mi /
3,538 cubic km |
Shoreline Length |
3,830 mi /
6,164 km (including islands) |
Water Surface Area |
23,000 square mi /
59,565 square km |
Surface Area in U.S. |
9,111 square mi /
23,600 square km |
Retention/Replacement Time |
22 years |
Outlet |
St. Clair River to Lake Erie |
Population |
1.5 million U.S. /
1.5 million Canada |
Source: The Lake Huron Basin bathymetry
map was produced by NOAA (GLERL and National
Geophysical Data Center). |
Lake Erie is
the fourth largest of the Great Lakes and ranks as the 13th
largest lake in the world.
Lake Erie Basin Statistics
Length |
241 mi / 388 km |
Breadth |
57 mi / 92 km |
Depth |
62 ft / 19 m average
210 ft / 64 m maximum |
Volume |
116 cubic mi /
483 cubic km |
Shoreline Length |
871 mi /
1,402 km (including islands) |
Water Surface Area |
9,910 square mi /
25,655 square km |
Surface Area in U.S. |
4,977 square mi /
12,893 square km |
Retention/Replacement Time |
2.6 years |
Outlet |
Niagara River and Welland Canal |
Population |
10.5 million U.S. /
1.9 million Canada |
Source: The Lake Erie Basin bathymetry map
was produced by NOAA (GLERL and National
Geophysical Data Center). |
Lake Ontario is
the fifth largest of the Great Lakes and ranks as the 17th largest
lake in the world.
Lake Ontario Basin Statistics
Length |
193 mi / 311 km |
Breadth |
53 mi / 85 km |
Depth |
283 ft / 86 m average
802 ft / 244 m maximum |
Volume |
393 cubic mi / 1,639 cubic km |
Shoreline Length |
712 mi /
1,146 km (including islands) |
Water Surface Area |
7,340 square mi /
19,009 square km |
Surface Area in U.S. |
3,560 square mi /
8,960 square km |
Retention/Replacement Time |
6 years |
Outlet |
St. Lawrence River to the Atlantic Ocean
Levels regulated by international agreements |
Population |
2.8 million U.S./2.8 million Canada |
Source: The Lake Ontario Basin bathymetry
map was produced by NOAA (GLERL and National
Geophysical Data Center). |
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Bathymetry data products, such as posters and CD-ROMs, are
available to order through the NOAA
National Geophysical Data Center web site.
NOAA is engaged in a program to compile Great Lakes bathymetric data
and make them readily available to the public, especially to the communities
concerned with Great Lakes science, pollution, coastal erosion, response
to climate changes, threats to lake ecosystems, and health of the fishing
industry. This program is managed by NGDC and it relies on the cooperation
of NOAA/Great Lakes Environmental Research Laboratory, NOAA/National
Ocean Service, the Canadian Hydrographic Service, other agencies, and
academic laboratories.
Last updated: 2004-11-15 js
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