Winter colors the landscape white in this image of Lake Nipigon captured by the MODIS on the Aqua satellite captured on December 22, 2008. In this image, the lake, which resembles a large white splotch, is covered with ice and snow. Lake Nipigon, located in Ontario, Canada lies just north of Lake Superior in the US. The much larger Lake Superior is located in the bottom right corner of the image.
Lake Nipigon drains into the Nipigon River and from the river, into the Nipigon Bay of Lake Superior. The largest tributaries of Lake Superior are this lake and river.
From the NASA "image of the day" website: http://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2008-12-25