Stories tagged limnology


Lake Superior Day: Swimmers enjoy the waters of Lake Superior in Duluth, Minnesota's Canal Park.
Lake Superior Day: Swimmers enjoy the waters of Lake Superior in Duluth, Minnesota's Canal Park.Courtesy Mark Ryan
How do you celebrate one of the largest pools of freshwater on Earth? By participating in the annual Lake Superior Day, that’s how! This Sunday, July 20, is Lake Superior Day, a day of celebrations for the world’s largest and cleanest freshwater lake.

Towns and communities lining the shores of Superior in Michigan, Minnesota, and Wisconsin, and the Canadian province of Ontario are planning all sorts of events in tribute to the greatest of the Great Lakes.

Picnics, beach clean-ups, library displays, kite flying, concerts, hikes, an essay contest, and government proclamations are all part of the day’s celebration to bring attention to this huge body of water that holds 10 percent of Earth’s fresh water. Events are planned all around the lake. For example, games and activities promoting water conservation will take place in Red Rock, Ontario. A family picnic is scheduled at Silver Harbour in Thunder Bay, Canada. Afternoon events will take place on Barker’s Island Festival Park in the city of Superior, Wisconsin, and scientists and lake area experts will be on hand at the Lake Superior Maritime Visitor Center at Canal Park in Duluth with information about the lake’s natural history, regional culture, and invasive aquatic species.

The annual event takes place on the third Sunday of July, and is sponsored by the Lake Superior Binational Forum, the U.S. Environmental Protection Agency, and Environment Canada. So, if you're anywhere near Gichigami this coming Sunday, join in the festivities, or just go jump in the lake!


Since 2005, an ebola-like virus has been killing fish in the Great Lakes. A major die-off was recently reported near Milwaukee, affecting some 30 species. While the disease does not affect humans, it could devastate sport and commercial fishing in the region. Though the disease has not hit Lake Superior yet, it is starting to spread out from the Great Lakes region, thanks to infected fish swimming into rivers and streams.