Historic Crests
(1) 475.90 ft on 01/27/1937
(2) 464.30 ft on 02/15/1884
(3) 464.00 ft on 03/08/1945
(4) 463.20 ft on 03/12/1964
(5) 463.00 ft on 04/01/1913
(6) 462.40 ft on 01/05/1943
(7) 461.80 ft on 02/01/1883
(8) 460.90 ft on 03/07/1997
(9) 459.90 ft on 01/01/1907
(10) 459.60 ft on 01/01/1832
(11) 458.80 ft on 04/18/1948
(12) 457.60 ft on 01/01/1933
(13) 456.40 ft on 03/04/1962
(14) 455.20 ft on 03/23/1943
(15) 454.90 ft on 03/10/1955
(16) 454.50 ft on 03/28/1936
(17) 454.40 ft on 02/06/1950
(18) 454.20 ft on 03/12/1967
(19) 454.00 ft on 03/22/1963
(20) 453.10 ft on 03/16/2015
(21) 453.00 ft on 01/03/1991
(22) 452.50 ft on 04/26/2011
(23) 452.00 ft on 01/12/2005
(24) 451.80 ft on 01/26/1996
(25) 451.60 ft on 03/13/2011
(26) 451.10 ft on 05/30/1968
(27) 451.00 ft on 12/14/1972
(28) 450.20 ft on 04/19/1972

(P): Preliminary values subject to further review.