Historic Crests
(1) 665.47 ft on 04/08/1964
(2) 665.03 ft on 07/09/2013
(3) 664.93 ft on 01/05/2016
(4) 664.76 ft on 04/08/1994
(5) 664.08 ft on 03/17/1996
(6) 664.02 ft on 03/20/1998
(7) 663.36 ft on 12/05/1992
(8) 662.95 ft on 03/06/1995
(9) 662.74 ft on 02/08/2010
(10) 661.21 ft on 05/16/2011
(11) 658.39 ft on 05/08/2000
(12) 654.99 ft on 06/14/2001

(P): Preliminary values subject to further review.