Historic Crests
(1) 1,454.10 ft on 04/26/2009
(2) 1,451.20 ft on 05/01/2011
(3) 1,450.08 ft on 08/18/2011
(4) 1,445.90 ft on 05/05/1997
(5) 1,445.77 ft on 04/15/2010
(6) 1,444.65 ft on 04/25/1996
(7) 1,443.80 ft on 05/02/1969
(8) 1,442.83 ft on 04/11/1995
(9) 1,442.83 ft on 04/22/2001
(10) 1,442.81 ft on 08/16/1993
(11) 1,442.05 ft on 04/16/1987
(12) 1,441.64 ft on 04/21/1999
(13) 1,432.87 ft on 06/26/2007
(14) 1,420.90 ft on 03/01/1993

(P): Preliminary values subject to further review.