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.
Where does all the water in the Great Lakes come from?
The Great Lakes were formed by the melted water from glaciers, with the last glacier retreating almost 11,000 years ago. Today, snowmelt still supplies the Great Lakes with much of its water.
Thank you for your question!
Answered on September 26, 2000