Historic Crests
(1) 2,297.86 ft on 04/10/1952
(2) 2,290.83 ft on 04/17/2009
(3) 2,283.98 ft on 03/29/2019
(4) 2,282.42 ft on 04/02/1978
(5) 2,280.01 ft on 03/24/1997
(6) 2,276.65 ft on 03/22/2011
(7) 2,276.37 ft on 03/15/1972
(8) 2,276.24 ft on 06/22/1953
(9) 2,275.83 ft on 05/15/1995
(10) 2,275.66 ft on 05/23/1982
(11) 2,275.30 ft on 07/29/1993
(12) 2,275.01 ft on 04/01/1971
(13) 2,274.92 ft on 03/15/2014
(14) 2,274.29 ft on 06/16/1967
(15) 2,274.26 ft on 05/29/1996
(16) 2,274.24 ft on 05/28/1965
(17) 2,274.14 ft on 04/05/1969
(18) 2,273.86 ft on 04/09/1987
(19) 2,273.78 ft on 05/11/1986
(20) 2,273.61 ft on 03/19/1994
(21) 2,273.54 ft on 03/24/2001
(22) 2,273.39 ft on 06/27/1957
(23) 2,273.35 ft on 05/17/1975
(24) 2,273.33 ft on 06/16/1960
(25) 2,273.29 ft on 05/26/2010
(26) 2,273.13 ft on 03/25/1959
(27) 2,273.10 ft on 04/22/1979
(28) 2,272.86 ft on 04/10/1954
(29) 2,272.76 ft on 04/28/1973
(30) 2,272.69 ft on 05/19/1999
(31) 2,272.63 ft on 03/28/1956
(32) 2,272.55 ft on 06/18/1958
(33) 2,272.24 ft on 05/24/2018
(34) 2,272.16 ft on 07/20/1966
(35) 2,272.11 ft on 06/26/1970
(36) 2,272.05 ft on 10/07/2011
(37) 2,271.95 ft on 07/11/1998
(38) 2,271.93 ft on 06/29/1983
(39) 2,271.91 ft on 10/05/2014
(40) 2,271.88 ft on 07/09/1955
(41) 2,271.77 ft on 06/22/1984
(42) 2,271.63 ft on 04/02/1985
(43) 2,271.62 ft on 07/09/1976
(44) 2,271.04 ft on 10/01/1960
(45) 2,270.58 ft on 09/24/2013
(46) 2,270.40 ft on 10/01/2015
(47) 2,270.34 ft on 04/05/2004
(48) 2,270.29 ft on 07/05/1963
(49) 2,269.72 ft on 07/12/1977
(50) 2,269.49 ft on 05/07/1990
(51) 2,269.16 ft on 10/01/1999
(52) 2,268.89 ft on 10/01/2001
(53) 2,268.89 ft on 10/01/1988
(54) 2,268.71 ft on 10/21/1973
(55) 2,268.31 ft on 10/01/1979
(56) 2,268.25 ft on 07/17/1964
(57) 2,268.17 ft on 08/17/1962
(58) 2,267.87 ft on 07/23/1989
(59) 2,267.55 ft on 10/01/2004
(60) 2,266.58 ft on 10/01/1967
(61) 2,266.31 ft on 05/01/2017
(62) 2,265.89 ft on 12/03/1990
(63) 2,265.84 ft on 05/15/2006
(64) 2,265.70 ft on 08/09/1992
(65) 2,264.21 ft on 05/18/2003
(66) 2,263.60 ft on 06/27/2008
(67) 2,263.15 ft on 10/01/2006
(68) 2,260.90 ft on 10/23/1980

(P): Preliminary values subject to further review.