Historic Crests
(1) 1,655.29 ft on 04/19/1979
(2) 1,654.77 ft on 04/30/1970
(3) 1,654.63 ft on 06/01/2011
(4) 1,653.88 ft on 04/10/1969
(5) 1,653.69 ft on 06/05/2013
(6) 1,653.22 ft on 04/10/1996
(7) 1,653.12 ft on 04/29/1975
(8) 1,652.86 ft on 01/01/1939
(9) 1,652.23 ft on 04/13/2009
(10) 1,652.11 ft on 04/06/1951
(11) 1,652.10 ft on 04/04/1949
(12) 1,650.67 ft on 03/24/1976
(13) 1,649.21 ft on 03/27/2017
(14) 1,649.08 ft on 03/16/1972
(15) 1,648.96 ft on 06/27/2005
(16) 1,648.70 ft on 03/27/1960
(17) 1,648.63 ft on 03/30/2005
(18) 1,648.48 ft on 07/16/1999
(19) 1,648.47 ft on 04/22/2018
(20) 1,648.44 ft on 03/24/1947
(21) 1,648.37 ft on 04/01/1952
(22) 1,648.24 ft on 06/30/2014
(23) 1,647.97 ft on 03/31/1955
(24) 1,647.89 ft on 04/16/1950
(25) 1,647.86 ft on 03/30/2005
(26) 1,647.82 ft on 03/31/1983
(27) 1,647.48 ft on 03/29/1997
(28) 1,647.39 ft on 03/27/1978
(29) 1,647.35 ft on 03/13/1995
(30) 1,647.19 ft on 06/09/1963
(31) 1,647.04 ft on 04/14/1982
(32) 1,646.92 ft on 03/31/2010
(33) 1,646.34 ft on 03/24/2019
(34) 1,644.46 ft on 10/01/2019
(35) 1,644.06 ft on 03/11/2015
(36) 1,642.46 ft on 07/04/2000
(37) 1,641.97 ft on 03/18/2003
(38) 1,641.88 ft on 06/13/2004
(39) 1,641.32 ft on 06/02/2016
(40) 1,641.31 ft on 03/27/2001
(41) 1,641.08 ft on 03/14/2012
(42) 1,641.04 ft on 04/12/2002
(43) 1,640.81 ft on 06/02/2007
(44) 1,640.42 ft on 04/04/2006
(45) 1,639.69 ft on 06/14/2008
(46) 1,639.58 ft on 03/25/2021

(P): Preliminary values subject to further review.