For the record, here are the ice off dates since 1982. Any corrections? Does anybody have records prior to 1982?
1982 May 19
1983 May 10
1984 May 15
1985 May 9
1986 May 3
1987 April 30
1988 May 10
1989 April 30
1990 April 18
1991 May 12
1992 April 18
1993 May 2
1994 April 23
1995 May 8
1996 May 4
1997 May 10
1998 May 2
1999 May 11
2000 April 27
2001 May 7
2002 May 11
2003 April 27
2004 April 20
2005 April 24
2006 April 30
2007 April 28
2008 May 16
2009 May 5