Historic Crests
(1) 1,657.60 ft on 04/05/2011
(2) 1,657.00 ft on 04/22/2019 (P)
(3) 1,656.44 ft on 07/17/2010
(4) 1,656.20 ft on 05/12/1997
(5) 1,655.50 ft on 05/02/2001
(6) 1,654.96 ft on 05/19/2010
(7) 1,654.50 ft on 05/07/1985
(8) 1,654.30 ft on 05/02/1995
(9) 1,653.76 ft on 04/18/1969
(10) 1,653.50 ft on 05/10/1994
(11) 1,653.40 ft on 10/08/1986
(12) 1,653.30 ft on 09/28/1993
(13) 1,653.00 ft on 06/07/1962
(14) 1,653.00 ft on 04/28/1998
(15) 1,653.00 ft on 04/30/1996
(16) 1,652.73 ft on 04/30/2012
(17) 1,652.60 ft on 05/22/1947
(18) 1,652.60 ft on 04/28/1987
(19) 1,652.50 ft on 09/25/1984
(20) 1,652.39 ft on 05/01/1970
(21) 1,652.10 ft on 04/25/1960
(22) 1,652.04 ft on 05/12/2014
(23) 1,651.90 ft on 04/19/1954
(24) 1,651.70 ft on 05/09/1963
(25) 1,651.60 ft on 04/28/1999
(26) 1,651.60 ft on 05/22/1946
(27) 1,651.57 ft on 04/25/1967
(28) 1,651.50 ft on 06/06/1961
(29) 1,651.47 ft on 06/06/1965
(30) 1,651.47 ft on 06/19/1966
(31) 1,651.40 ft on 09/12/1957
(32) 1,651.37 ft on 10/07/2009
(33) 1,651.29 ft on 10/08/2015
(34) 1,651.20 ft on 09/22/1992
(35) 1,651.20 ft on 05/16/1950
(36) 1,651.10 ft on 04/23/2002
(37) 1,651.00 ft on 05/11/1955
(38) 1,651.00 ft on 05/14/1964
(39) 1,651.00 ft on 11/15/1953
(40) 1,650.93 ft on 10/28/2013
(41) 1,650.80 ft on 04/21/1988
(42) 1,650.70 ft on 04/12/2000
(43) 1,650.40 ft on 04/01/1959
(44) 1,650.39 ft on 05/13/1968
(45) 1,650.30 ft on 05/17/1956
(46) 1,650.30 ft on 05/07/1991
(47) 1,650.00 ft on 05/16/1989
(48) 1,649.80 ft on 04/22/2003
(49) 1,649.80 ft on 09/24/1990
(50) 1,648.80 ft on 05/13/1948
(51) 1,648.60 ft on 02/26/1952
(52) 1,648.50 ft on 10/12/1983
(53) 1,648.40 ft on 05/04/2004
(54) 1,648.10 ft on 07/05/1944
(55) 1,648.10 ft on 04/26/2007
(56) 1,647.80 ft on 04/30/2008
(57) 1,647.80 ft on 05/12/2005
(58) 1,647.60 ft on 05/01/2006
(59) 1,647.50 ft on 05/05/1945
(60) 1,646.90 ft on 06/17/1943
(61) 1,646.40 ft on 05/19/1949
(62) 1,646.10 ft on 01/08/1951
(63) 1,639.20 ft on 05/29/1942
(64) 1,639.00 ft on 06/03/1941
(65) 1,638.90 ft on 05/15/1940
(66) 1,638.80 ft on 05/30/1939
(67) 1,638.60 ft on 06/09/1938
(68) 1,638.20 ft on 10/20/1935
(69) 1,637.90 ft on 05/31/1937

(P): Preliminary values subject to further review.