Low Water Records for Mississippi River at Winona Dam 5a
(1) 639.65 ft on 08/17/1936
(2) 642.96 ft on 01/27/1944
(3) 643.95 ft on 12/13/1980
(4) 644.35 ft on 02/03/1945
(5) 644.40 ft on 12/16/1938
(6) 644.43 ft on 01/05/1946
(7) 644.68 ft on 12/20/1975
(8) 644.77 ft on 01/28/1957
(9) 644.77 ft on 11/30/1937
(10) 644.80 ft on 11/27/1950
(11) 644.82 ft on 12/14/1961
(12) 644.91 ft on 08/26/1941