Historic Crests
(1) 659.70 ft on 04/26/1942
(2) 658.90 ft on 05/27/1957
(3) 657.08 ft on 05/04/1990
(4) 652.81 ft on 06/14/1989
(5) 652.43 ft on 06/20/2015
(6) 651.55 ft on 12/21/1992
(7) 650.53 ft on 05/13/1994
(8) 649.40 ft on 12/30/1987
(9) 649.40 ft on 06/15/1993
(10) 649.11 ft on 06/07/1991

(P): Preliminary values subject to further review.