Historic Crests
(1) 717.54 ft on 05/03/1990
(2) 716.60 ft on 06/15/1989
(3) 713.35 ft on 06/06/1957
(4) 712.30 ft on 12/25/1991
(5) 710.79 ft on 06/24/2015

(P): Preliminary values subject to further review.