What is the deepest lake in Canada?

Great Slave Lake is the deepest lake in Canada.

Its maximum depth is about 614 metres (2,014 feet), found in the lake’s deep Christie Bay. That depth also makes it the deepest lake in North America. Great Slave Lake lies in Canada’s Northwest Territories and drains westward through the Mackenzie River.

The lake is the second-largest in the Northwest Territories, after Great Bear Lake, but “largest” and “deepest” are different records. Great Bear Lake covers more surface area, while Great Slave Lake plunges much farther below the waterline. Lake Athabasca is also a major Canadian lake, but it is considerably shallower.

The lake formed from glacial processes and is a remnant of the much larger prehistoric Lake McConnell. Its name reflects the historical English usage for the Slavey, a Dene people; many Indigenous communities use traditional names for the lake.