Historic Crests
(1) 1,492.30 ft on 04/23/2009
(2) 1,488.71 ft on 08/21/2011
(3) 1,487.10 ft on 05/10/1997
(4) 1,486.81 ft on 05/25/2011
(5) 1,479.48 ft on 05/23/1995
(6) 1,479.30 ft on 06/09/1999
(7) 1,475.92 ft on 05/09/1996
(8) 1,474.72 ft on 04/14/2010
(9) 1,474.18 ft on 05/11/2001
(10) 1,472.64 ft on 08/15/1993
(11) 1,468.35 ft on 05/11/1979
(12) 1,466.27 ft on 04/15/1987
(13) 1,466.06 ft on 07/17/1975
(14) 1,464.21 ft on 09/07/2000
(15) 1,463.54 ft on 05/04/1994
(16) 1,459.95 ft on 04/21/1983
(17) 1,459.64 ft on 06/22/2007
(18) 1,457.77 ft on 04/13/1998
(19) 1,457.39 ft on 04/23/1982
(20) 1,456.89 ft on 05/18/1984
(21) 1,456.54 ft on 06/18/2004
(22) 1,454.90 ft on 04/13/1978
(23) 1,451.72 ft on 07/03/2005

(P): Preliminary values subject to further review.