Editing Lake Agassiz (section)

=== Moorhead Phase: 12,560–11,690 YBP ===
As the ice sheet melted northward, Lake Agassiz found a lower outlet through the [[Kaministiquia River|Kaministikwia]] route along the modern Minnesota–Ontario border. This moved water to [[Lake Duluth]], a proglacial lake in the [[Lake Superior]] basin. From there the water drained south via an ancestral [[St. Croix River (Wisconsin–Minnesota)|St. Croix]] and [[Mississippi River]] systems. The lake drained below the Herman lake beaches until [[isostatic rebound]] and glacial advances closed the Kaministikwia route. This stabilized the lake at the Norcross lake stage ({{convert|325|m|ft}}).<ref name=Michalek/><ref>(Thorleifson, 1996).</ref> The average depth of Lake Agassiz during the late Moorhead Phase was {{convert|258|m|ft}}. Drainage from Lake Agassiz continued to flow southward out of the ancient Minnesota and Mississippi River systems into the Gulf of Mexico.<ref name=Michalek/>