University of Minnesota
University of Minnesota
College of Biological Sciences
http://www.cbs.umn.edu/

Ice cover data

 

Ice-up date

Ice-out date

# of days w/ice cover

 

4/29/1940

 

 

4/14/1941

 

 

4/18/1942

 

 

4/23/1943

 

 

5/1/1944

 

 

4/9/1945

 

 

4/12/1946

 

 

5/1/1947

 

 

4/22/1948

 

 

4/20/1949

 

 

5/18/1950

 

 

5/1/1951

 

 

4/23/1952

 

 

4/25/1953

 

 

4/23/1954

 

 

4/18/1955

 

 

5/7/1956

 

 

4/24/1957

 

 

4/14/1958

 

 

4/22/1959

 

 

4/24/1960

 

 

4/28/1961

 

 

4/28/1962

 

 

4/15/1963

 

 

4/25/1964

 

 

5/1/1965

 

 

5/5/1966

 

 

4/16/1967

 

 

4/17/1968

 

 

4/21/1969

 

 

4/30/1970

 

 

4/20/1971

 

 

4/30/1972

 

 

4/12/1973

 

 

4/26/1974

 

 

5/5/1975

 

 

4/13/1976

 

 

4/14/1977

 

 

4/27/1978

 

11/10/1978

5/7/1979

175

11/9/1979

4/21/1980

164

11/15/1980

4/9/1981

145

 

4/27/1982

 

 

4/24/1983

 

10/25/1983

4/19/1984

177

11/17/1984

4/20/1985

154

11/11/1985

4/12/1986

152

11/13/1986

4/11/1987

149

12/2/1987

4/17/1988

137

11/18/1988

4/29/1989

162

11/17/1989

4/24/1990

158

11/26/1990

4/18/1991

143

11/4/1991

4/11/1992

159

11/14/1992

4/19/1993

156

11/8/1993

4/18/1994

161

11/26/1994

4/26/1995

151

11/11/1995

5/6/1996

177

11/12/1996

4/27/1997

166

11/16/1997

4/12/1998

147

12/7/1998

4/14/1999

128

11/29/1999

4/9/2000

132

11/27/2000

4/27/2001

151

12/2/2001

4/18/2002

138

11/13/2002

4/16/2003

153

11/10/2003

4/19/2004

161

11/29/2004

4/13/2005

136

11/25/2005

4/14/2006

141

11/30/2006

4/23/2007

146

11/27/2007

5/7/2008

162

11/21/2008

4/23/2009

153

12/5/2009

4/2/2010

119

11/23/2010

4/27/2011

155

11/20/20113/25/2012127
11/24/20125/13/2013171
11/22/20135/1/2014160