Historic Crests
(1) 3,189.37 ft on 05/20/1978
(2) 3,189.00 ft on 06/18/1962
(3) 3,188.42 ft on 05/25/1971
(4) 3,188.00 ft on 06/17/1967
(5) 3,187.91 ft on 05/27/1957
(6) 3,187.90 ft on 06/19/1965
(7) 3,187.63 ft on 07/20/1969
(8) 3,187.63 ft on 06/11/1986
(9) 3,187.62 ft on 06/02/1991
(10) 3,187.57 ft on 06/11/1968
(11) 3,187.45 ft on 05/02/1963
(12) 3,187.41 ft on 08/01/1958
(13) 3,187.37 ft on 05/20/1955
(14) 3,187.33 ft on 04/23/2000
(15) 3,187.31 ft on 04/16/1974
(16) 3,187.31 ft on 03/17/1966
(17) 3,187.30 ft on 06/21/1964
(18) 3,187.29 ft on 05/09/1973
(19) 3,187.27 ft on 05/25/2010
(20) 3,187.26 ft on 06/30/1972
(21) 3,187.26 ft on 03/08/1987
(22) 3,187.24 ft on 06/16/1982
(23) 3,187.24 ft on 05/19/1970
(24) 3,187.20 ft on 03/28/1980
(25) 3,187.18 ft on 06/13/1999
(26) 3,187.18 ft on 05/29/1996
(27) 3,187.16 ft on 06/04/1997
(28) 3,187.16 ft on 04/17/1979
(29) 3,187.16 ft on 05/06/1984
(30) 3,187.14 ft on 03/22/2019
(31) 3,187.14 ft on 05/19/1983
(32) 3,187.14 ft on 10/01/1955
(33) 3,187.12 ft on 06/11/1995
(34) 3,187.12 ft on 05/08/1993
(35) 3,187.10 ft on 06/20/1998
(36) 3,187.09 ft on 07/18/1952
(37) 3,187.03 ft on 03/09/1994
(38) 3,186.99 ft on 05/22/2011
(39) 3,186.84 ft on 05/27/2014
(40) 3,186.78 ft on 05/24/2019
(41) 3,186.76 ft on 05/22/2016
(42) 3,186.73 ft on 05/21/2018
(43) 3,186.58 ft on 06/13/2001
(44) 3,186.00 ft on 04/20/2012
(45) 3,185.89 ft on 05/28/2017
(46) 3,184.60 ft on 05/17/2002
(47) 3,184.20 ft on 07/02/1975
(48) 3,183.78 ft on 06/22/2003
(49) 3,183.17 ft on 04/27/1992
(50) 3,182.92 ft on 04/22/1985
(51) 3,182.48 ft on 10/01/1952
(52) 3,182.14 ft on 06/25/1976
(53) 3,181.49 ft on 06/21/2009
(54) 3,181.08 ft on 04/11/1988
(55) 3,180.69 ft on 10/01/1958
(56) 3,179.70 ft on 04/11/1981
(57) 3,179.16 ft on 05/09/1977
(58) 3,179.10 ft on 04/27/2004
(59) 3,178.94 ft on 06/06/2013
(60) 3,178.29 ft on 06/12/2008
(61) 3,177.76 ft on 05/27/1954
(62) 3,176.33 ft on 06/24/2005
(63) 3,175.03 ft on 06/07/1990
(64) 3,173.92 ft on 05/21/1989
(65) 3,173.07 ft on 05/14/1960
(66) 3,172.07 ft on 05/22/2006
(67) 3,169.36 ft on 05/20/2007
(68) 3,166.40 ft on 06/21/1961
(69) 15.97 ft on 05/20/1978
(70) 15.91 ft on 06/07/2015
(71) 13.81 ft on 06/18/1962
(72) 13.18 ft on 05/25/1971
(73) 11.05 ft on 05/26/1957
(74) 10.99 ft on 05/26/2010
(75) 10.88 ft on 06/17/1967
(76) 10.67 ft on 06/03/1991
(77) 10.40 ft on 06/22/1947
(78) 10.16 ft on 07/21/1969
(79) 10.02 ft on 04/23/2000
(80) 9.77 ft on 06/19/1965
(81) 9.75 ft on 06/12/1986
(82) 9.24 ft on 03/13/2011
(83) 8.50 ft on 05/13/2014
(84) 5.36 ft on 05/11/2016
(85) 3.77 ft on 06/20/2012
(86) 3.62 ft on 06/17/2013
(87) 3.61 ft on 03/06/2012
(88) 3.22 ft on 05/27/2013
(89) 3.19 ft on 04/14/2017

(P): Preliminary values subject to further review.