Historic Crests
(1) 638.40 ft on 04/22/1965
(2) 636.45 ft on 04/12/1997
(3) 636.21 ft on 04/18/2001
(4) 635.24 ft on 04/20/1969
(5) 634.52 ft on 04/20/1952
(6) 633.94 ft on 06/26/1993
(7) 633.90 ft on 04/20/1951
(8) 633.86 ft on 05/03/1975
(9) 633.84 ft on 04/04/2019
(10) 633.50 ft on 04/16/2011
(11) 633.35 ft on 04/07/1967
(12) 633.10 ft on 04/09/1986
(13) 632.70 ft on 05/09/1954
(14) 632.40 ft on 09/28/2010
(15) 632.05 ft on 03/21/1973
(16) 631.97 ft on 05/25/2019
(17) 631.96 ft on 04/26/1996
(18) 631.82 ft on 03/14/1983
(19) 631.74 ft on 03/28/2019
(20) 631.50 ft on 04/24/1982
(21) 631.49 ft on 06/24/1943
(22) 631.38 ft on 05/26/2017
(23) 631.34 ft on 04/19/1971
(24) 631.23 ft on 06/06/1942
(25) 631.19 ft on 09/27/2016
(26) 631.15 ft on 04/28/1979
(27) 631.00 ft on 05/07/2019

(P): Preliminary values subject to further review.