Lake McConnell to have drained first into Lake Agassiz", an even larger lake to the southeast, "then into the Arctic Ocean via the Mackenzie River, then back into Lake Agassiz, and then back to the Arctic Ocean" at various times in its history. Either 8,300 or between 9,000 and 8,000 years ago, it divided to form Great Slave Lake and Lake Athabasca. These two and Great Bear Lake are considered its 'daughter' lakes. Lake McConnell Lake McConnell was a very large proglacial lake that existed in what is now Canada from 11,800 to 8,300 years ago. Other sources give starting and ending
Steamboats of the Peace River Steamboats of the Peace River The Peace River, which flows from the Rocky Mountains in British Columbia to the Peace–Athabasca Delta and Lake Athabasca in Alberta, was navigable by late nineteenth and early twentieth century steamboats from the Rocky Mountain Falls at Hudson's Hope to Fort Vermilion, where there was another set of rapids, then via the lower Peace from Vermilion to Lake Athabasca. The Peace is part of the Mackenzie Basin, a larger river complex which includes the Athabasca, Slave, and Mackenzie Rivers. The Athabasca had large rapids too at Grande Rapids and Fort Smith; in this way the