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April 26 is the 2011 Ice -free date for Detroit Lake.
This is six days later than the long-term average, but almost 12 days later than the average of the last 10 years. It isn't unusual to have late ice-off dates - in 2008 Detroit still had ice until May 1st.
This year's ice-on period was about 15 days longer than the average of the last 10 years. | 
