Historic Crests
(1) 534.67 ft on 03/31/2007
(2) 534.10 ft on 10/13/2009
(3) 533.55 ft on 05/27/2015
(4) 533.48 ft on 03/20/2012
(5) 532.66 ft on 02/19/2004
(6) 531.96 ft on 04/03/1999

(P): Preliminary values subject to further review.