As the ice sheet melted, it created vast amounts of meltwater that flowed into the lowlands of the continent, eventually forming a series of large lakes, including Lake Agassiz. Over time ...

Aerial photograph showing flooding in the Traverse Gap, the former southern outlet of Glacial Lake Agassiz and the source of River Warren. Ice-covered Lake Traverse (Mde Hdakiŋyaŋ), a natural ...