Historic Crests
(1) 1,657.60 ft on 04/05/2011
(2) 1,656.44 ft on 07/17/2010
(3) 1,656.20 ft on 05/12/1997
(4) 1,655.50 ft on 05/02/2001
(5) 1,654.50 ft on 05/07/1985
(6) 1,654.30 ft on 05/02/1995
(7) 1,653.50 ft on 05/10/1994
(8) 1,653.40 ft on 10/08/1986
(9) 1,653.30 ft on 09/28/1993
(10) 1,653.00 ft on 04/30/1996
(11) 1,653.00 ft on 04/28/1998
(12) 1,652.73 ft on 04/30/2012
(13) 1,652.60 ft on 04/28/1987
(14) 1,652.50 ft on 09/25/1984
(15) 1,652.04 ft on 05/12/2014
(16) 1,651.60 ft on 04/28/1999
(17) 1,651.37 ft on 10/07/2009
(18) 1,651.29 ft on 10/08/2015
(19) 1,651.20 ft on 09/22/1992
(20) 1,651.10 ft on 04/23/2002
(21) 1,650.93 ft on 10/28/2013
(22) 1,650.80 ft on 04/21/1988
(23) 1,650.70 ft on 04/12/2000
(24) 1,650.30 ft on 05/07/1991
(25) 1,650.00 ft on 05/16/1989
(26) 1,649.80 ft on 09/24/1990
(27) 1,649.80 ft on 04/22/2003
(28) 1,648.50 ft on 10/12/1983
(29) 1,648.40 ft on 05/04/2004
(30) 1,648.10 ft on 04/26/2007
(31) 1,647.80 ft on 05/12/2005
(32) 1,647.80 ft on 04/30/2008
(33) 1,647.60 ft on 05/01/2006

(P): Preliminary values subject to further review.