Description: A map from 1911 showing the early drainage history of the southern Great Lake district during the last glacial period. The map indicates the present lake shorelines (dashed line) and shows the progression of the retreat of the ice lobes and the expansion of the proglacial Lake Warren. The map shows rivers and the remnant glacial lobes with direction of flow of the Huron lobe and the Ontario lobe.
Place Names: Midwest States,
ISO Topic Categories: boundaries,
geoscientificInformation,
inlandWaters,
location
Keywords: Drainage History of the Southern Great Lake District, physical, kGlacial, physical features, boundaries,
geoscientificInformation,
inlandWaters,
location, Unknown, Ice Age
Source: Isaiah Bowman, Ph. D, Forest Physiography (New York, NY: John Wiley and Sons, 1911) 480
Map Credit: Courtesy the private collection of Roy Winkelman |
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