Frozen Lake Nipigon and Thawed Lake Superior, Canada49.7N 88.6W
The Canadian terrain north of Lake Superior is lightly dusted in snow in this spring image. While Lake Superior appears to have mostly thawed out, with the exception of a few bays along the northern shoreline, Lake Nipigon (small and rounded, above) is still completely frozen.
Lake Nipigon is the largest lake entirely within the boundaries of the Canadian province of Ontario (since four of the five Great Lakes are split between the US and Canada). It has a total area (including islands within the lake) of 4848 km2, and a maximum depth of 165 m.