Historic Crests
(1) 538.11 ft on 05/30/2015
(2) 533.21 ft on 05/20/1990
(3) 531.32 ft on 01/02/1992
(4) 530.96 ft on 07/31/2004
(5) 529.00 ft on 06/25/1989
(6) 524.33 ft on 02/27/1993
(7) 524.03 ft on 04/18/1992
(8) 523.15 ft on 05/17/1994

(P): Preliminary values subject to further review.