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Drinking Water Week
American Water Works Association (5/6)
Drinking Water Week, May 4-10, is a unique opportunity for water professionals and the communities they serve to join together to recognize the vital role water plays in our daily lives.
American Wetlands Month
U.S. Environmental Protection Agency (5/2)
This May will mark the 18th anniversary of American Wetlands Month, a time when EPA and its partners celebrate the vital importance of wetlands to the Nation's ecological, economic, and social health. It is also a great opportunity to discover and teach others about the important role that wetlands play in our environment and the significant benefits they provide.
Great Lakes Regional Research Information Network (GLRRIN)
GLIN's May 2008 Site of the Month (5/1)
Established in 2006 by NOAA Sea Grant, GLIN and regional partners, GLRRIN provides a powerful means to foster collaboration, acquire funding, highlight research needs and issues, and increase the overall impact of Great Lakes research. GLRRIN is a free service and offers research-related news and upcoming events, and profiles of Great Lakes researchers and their current projects.
Mother Earth Water Walk
(4/28)
Two Anishinawbe Grandmothers, and a group of Anishinawbe Women and Men have taken action regarding the water issue by walking the perimeter of the Great Lakes. The 2008 Lake Michigan walk kicked off April 26.
Shipwrecks and Maritime Tales of the Lake Erie Coastal Ohio Trail
Ohio Sea Grant (4/24)
The shipwrecks within this website are a mere sampling of the hundreds of shipwreck sites located in the depths of Lake Erie. The goal is to make the visitor aware of the rich maritime history which lies beneath the surface of Ohio's Lake Erie.
Michigan Wildlife Conservancy
(4/21)
The Michigan Wildlife Conservancy provides the technical and financial assistance that landowners and managers need to restore and maintain wildlife habitat on their own land.
What's going on in your neighborhood this month? Meet other people and learn together at recreational and educational events! Our new dynamic calendar is updated daily with current educational events.
3 | Introduction to the Great Lakes
Lake Superior is the largest of the Great Lakes in surface area and volume. In fact, Superior has the largest surface area of any freshwater lake in the world. 
The lake stretches 350 miles from west to east and 160 miles north to south. Its shoreline is nearly 2,800 miles long. Superior is also the coldest and deepest of the five Great Lakes. Average depths are close to 500 feet; the deepest point in the lake reaches 1,332 feet.
Fun Facts
Lake Superior's volume is so large that it could contain all the other Great Lakes plus three additional lakes the size of Lake Erie.
In 1985, scientists using a submersible vessel descended for the first time to the deepest part of Lake Superior (-1,332 ft./-405 m), near the Pictured Rocks National Lakeshore in Michigan waters.
Graphics: Basin map with Lake Superior highlighted; rocky cliffs on the shores of Isle Royale show the effects of prolonged wind and waves; Miner's Castle rock formation at Pictured Rocks National Lakeshore.
