teach.GLIN.net
GLIN Daily News About GLIN
AboutEnvironmentHistory/CultureGeographyPollutionCareers/BusinessTeachers' Corner
water photo
What's New?

Strategic plan targets invasive species
The Superior Daily Telegram (11/17)
Douglas County’s Land Conservation Committee is forwarding a plan to the county board that takes aim at invasive species.

Mich. Clean Marina Program: Public-private partners work together to improve water quality
Grand Rapids Environmental News Examiner (11/9)
Partners from the public and private sector in Michigan are working together in a voluntary program to improve the quality of the Great Lakes.

Researchers seek funding for wind test site in Lake Michigan
Grand Rapids Environmental News Examiner (11/7)
In a recent article in The Muskegon Chronicle, it was reported that researchers at Grand Valley State University’s Michigan Alternative and Renewable Energy Center (MAREC) cited a lack of year-around data (on wind platform testing) needed by prospective development companies.

COMMENTARY: Senate needs to pass clean energy act to help Michigan
The Grand Rapids Press (10/26)
Senate Majority Leader Harry Reid was absolutely correct with his recent proclamation about the current condition of the Great Lakes State: "The State of Michigan," Reid declared from the Senate Floor, with a copy Time Magazine in his hand, "is in trouble."

First Nation women 'walk the environmental talk'
WeNews (10/23)
Tomorrow's global day of climate activism aims for media and political attention. First Nation women have another way. Since 2003, they've walked the shoreline of a Great Lake or major river, meditating on the needs of an unborn generation.

City making big push for water school
The Business Journal (10/23)
The push is on to convince the University of Wisconsin-Milwaukee that the best location for its new School of Freshwater Sciences is near the university’s existing Great Lakes Water Institute on East Greenfield Avenue.

TEACH Calendar of Events
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.
TEACH Questions & Answers

What year did Lake Ontario freeze completely solid for one day?
from Anthony in Wilson, NY, Age 62

The Great Lakes can sometimes freeze completely over, but the water beneath the surface layer of ice remains in a liquid state well above the freezing point: 32 degrees Farenheight or 0 (zero) degrees Celsius. If all this water froze completely solid, even for a day, then all of the lifeforms in the lake would die!

Lake Erie, for example, is the shallowest lake and the lake with the least volume. It can freeze over (but not completely solid) during any severe winter. On the other hand, Lake Ontario -- with the second deepest average depth of all the Great Lakes and a volume approximately 3.5 times that of Lake Erie -- will only have about 25% ice coverage of its surface during a severe winter.

Related references:
TEACH: Do the Great Lakes freeze in the winter?
Great Lakes Aquarium: How often do the Great Lakes freeze completely over?
GLERL: Great Lakes Surface Environmental Analysis (GLSEA)

Thank you for your question!


Answered on August 3, 2001

Return to Great Lakes Vault of Knowledge