USGSThe United States Coast Guard will start breaking ice in Whitefish Bay and the Upper St. Marys River on Monday.  The work is being done in preparation for the start of the 2015 Commercial Navigation Season.  The U-S Coast Guard Cutter ‘Mackinaw’ will transit the Soo Locks today to establish tracks from the Upper St. Marys to the ice edge in eastern Lake Superior.  A reminder that ATV operators, snowmobilers and other recreational users should avoid going near any shipping channels during this time.