The following lists include extreme and significant points of the geography of Canada. All Canada Northernmost point — Cape Columbia, Ellesmere Island, Nunavut Southernmost point — South point of Middle Island, Ontario, in Lake Erie Easternmost point — Cape Spear, Newfoundland Westernmost point — Boundary Peak 187, Yukon Non-insular (mainland) Canada Northernmost point — Zenith Point, Nunavut Southernmost point — Point Pelee, Ontario Easternmost point — Cape Saint Charles, Labrador Westernmost point — Boundary Peak 187, Yukon Highest points Mount Logan Yukon — highest Canadian summit at Barbeau Peak, Ellesmere Island, Nunavut — highest Canadian island summit and highest summit of the Canadian Arctic at Lowest points Coastline — lowest Canadian surface point at sea level Great Slave Lake bottom, Northwest Territories — lowest fresh water point of North America at Islands Baffin Island, Nunavut — most extensive Canadian island at Ellesmere Island, Nunavut — tallest Canadian island at Island of Newfoundland, Newfoundland and Labrador — most extensive Canadian Atlantic island at Vancouver Island, British Columbia — most extensive Canadian Pacific island at Manitoulin Island in Lake Huron, Ontario — most extensive lake island on Earth at Lakes Lake Superior, Ontario — most voluminous lake of Western Hemisphere at Great Slave Lake, Northwest Territories — deepest lake of Western Hemisphere at Lake Michigan–Huron, Ontario — by some considerations the most extensive lake of Western Hemisphere and the most extensive freshwater lake on Earth at Nettilling Lake on Baffin Island, Nunavut — most extensive lake on an island on Earth at Lake Manitou on Manitoulin Island in Lake Huron, Ontario — most extensive lake on an island in a lake on Earth at Upper Dumbell Lake on Ellesmere Island Nunavut — most northern lake, there are more northern lakes but they are all unnamed and are only shown on detailed maps. Rivers Yukon River, British Columbia, Yukon, and Alaska — longest Bering Sea main stem river at Nelson River, Manitoba — longest Hudson Bay main stem river at Columbia River, British Columbia — longest Canadian Pacific Ocean main stem river at Mackenzie River, Northwest Territories — longest Canadian Arctic Ocean main stem river at Saint Lawrence River, Ontario and Quebec — longest Canadian Atlantic Ocean main stem river at See also Geography of Canada Extreme points of North America Extreme points of Canadian provinces Extreme communities of Canada Nordicity Remote and isolated community Notes References External links Lists of landforms of