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 genesee river

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PostSubject: genesee river   Fri May 28, 2010 5:16 am

# River channel between Rush and Honeoye Falls is filled by glacial debris. Lake Scottsville (elev. 540 feet) is formed along the present river route, with the Pinnacle Range damming the northern exit. Water flow continued northward through a depression in the hills at the University of Rochester, where it joined Lake Dawson (elev. 480 feet) about a mile north of the rapids that were created when the river crossed the Niagara Escarpment.
# Retreating ice exposes a new outlet, and Lake Dawson's level rapidly drops 45 feet, creating Lake Iroquois (elev. 435 feet). This in turn drains Lake Scottsville, and moves the mouth of the Genesee a mile further north, to a point just north of the Veteran's Memorial Bridge. Rapids at the Niagara Escarpment have eroded to form a 40 foot falls, just north of today's High Falls. Two new sets of rapids are formed between the escarpment and the river mouth
# Ice clears the Thousand Island Outlet, and the water level drops again forming Admiralty Lake (elev. 50 feet). The ground in this area has been so compressed by the absolutely massive weight of ice two mile thick, that the lake level is 200 feet lower than today's Lake Ontario. The river has to extend it's length by seven miles to reach the new shoreline
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