What is the annual average water temperature of each of the Great Lakes?
March 29, 2007 12:00 PM Subscribe
What is the average annual water temperature of each of the Great Lakes? I've only found the one for Lake Superior, and have Googled and searched NOAA's website. I need this info for a book about the Great Lakes for children. The book is sold to schools and libraries. Include in your reply, the source of your information. Thanks!