Lake Superior water levels on the rise...after hitting all-time low

November 20, 2013 - MPR’s Dan Kraker reports that after more than a decade of falling water levels, Lake Superior is on the upswing. For 14 years, water levels in Lake Superior, the world's largest freshwater lake, remained below their long-term average, the longest stretch of below-average levels in recorded history. The big lake reached its all-time low in 2007.