Historic Crests
(1) 663.35 ft on 04/19/1965
(2) 661.95 ft on 04/17/2001
(3) 661.60 ft on 04/11/1997
(4) 661.37 ft on 04/19/1969
(5) 659.90 ft on 04/20/1952
(6) 659.26 ft on 04/18/1951
(7) 658.69 ft on 04/06/1967
(8) 658.28 ft on 06/26/1993
(9) 658.24 ft on 04/07/1986
(10) 658.17 ft on 04/15/2011
(11) 658.13 ft on 05/07/1954
(12) 658.06 ft on 05/02/1975
(13) 657.00 ft on 07/02/2014
(14) 656.70 ft on 06/22/1943
(15) 656.34 ft on 04/25/1996
(16) 656.08 ft on 03/12/1983
(17) 656.08 ft on 04/23/1982
(18) 656.08 ft on 03/20/1973
(19) 655.12 ft on 09/29/2010 (P)
(20) 654.51 ft on 05/17/2003

(P): Preliminary values subject to further review.