Historic Crests
(1) 592.20 ft on 05/05/2011
(2) 586.50 ft on 03/11/1997
(3) 580.40 ft on 02/23/1989
(4) 579.80 ft on 01/12/1991
(5) 575.80 ft on 04/16/2015
(6) 571.90 ft on 05/05/2010
(7) 571.70 ft on 04/07/2008
(8) 569.10 ft on 03/31/2002
(9) 568.70 ft on 05/22/1995
(10) 567.60 ft on 06/03/2004
(11) 565.30 ft on 05/23/1983
(12) 563.50 ft on 05/10/1984
(13) 563.30 ft on 09/26/2006
(14) 562.80 ft on 02/26/2003

(P): Preliminary values subject to further review.