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The article currently refers to "the ice age" -- as if there had only been one. The last glaciation, which ended less than 10,000 years ago, was just the most recent in a sequence of four glaciations. And, unless I am mistaken, all four of those preceded the glaciation this article says formed Lake Tight.

In addition the article currently makes three assertions that are not reconcilable:

• Lake Tight was short-lived;
• Lake Tight filled 2 million years ago;
• Lake Tight existed until 6,500 years;

Cheers! Geo Swan ( talk) 23:03, 20 October 2009 (UTC) reply

There is a move discussion in progress which affects this page. Please participate at Talk:Glacial Lake Duluth - Requested move and not in this talk page section. Thank you. — RM bot 04:21, 7 July 2012 (UTC) reply