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Dividing Line

What was "Glacial Lake Monongahela?"

Carbon-14 dates of about 22,000, 23,000, and 39,000 years old, all from plant matter found in lake sediments near Morgantown, indicate that Glacial Lake Monongahela was in existence during the Wisconsinan glacial stage. Some sediments are reversely magnetized in an early stand of the lake and therefore are older than 780,000 years BP (before the present)! Evidence exists suggesting that a high stand of the lake overflowed, perhaps at several places. The dominant outlet for a considerable period of time was along the Doddridge-Harrison County line just west of Salem, and the water flowed down the valley of Middle Island Creek. At some time during the multiple Pleistocene glaciations, a divide just south of New Martinsville was reduced and the present path of the Ohio River was established.

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