Historic Crests
(1) 478.51 ft on 05/20/1943
(2) 477.67 ft on 01/01/2016
(3) 476.73 ft on 05/15/2002
(4) 476.53 ft on 12/05/1982
(5) 476.09 ft on 04/15/1994
(6) 475.44 ft on 04/15/1979
(7) 475.02 ft on 01/15/2005
(8) 474.88 ft on 05/04/2019 (P)
(9) 474.64 ft on 06/25/1974
(10) 474.48 ft on 10/04/1926
(11) 474.46 ft on 04/25/1973
(12) 474.17 ft on 06/11/2008
(13) 473.98 ft on 11/02/2009
(14) 473.80 ft on 04/26/1944
(15) 473.78 ft on 03/16/1939
(16) 473.56 ft on 05/20/1995
(17) 473.55 ft on 05/03/1970
(18) 473.48 ft on 07/01/1951
(19) 473.48 ft on 10/04/1911
(20) 473.26 ft on 08/06/1981
(21) 473.12 ft on 02/07/1968
(22) 473.07 ft on 07/13/2015
(23) 473.04 ft on 02/14/1959
(24) 472.97 ft on 06/30/2015
(25) 472.93 ft on 05/01/1957
(26) 472.92 ft on 05/12/1996
(27) 472.88 ft on 09/13/1926
(28) 472.78 ft on 06/09/1917
(29) 472.72 ft on 04/14/1922
(30) 472.71 ft on 05/11/1961
(31) 472.59 ft on 04/23/2013
(32) 472.48 ft on 02/09/1942
(33) 472.45 ft on 06/26/2010
(34) 472.15 ft on 01/17/1950
(35) 472.14 ft on 05/08/1991
(36) 472.12 ft on 01/07/1993
(37) 472.08 ft on 05/09/1977
(38) 471.98 ft on 02/05/1916
(39) 471.94 ft on 05/19/2009
(40) 471.94 ft on 11/25/1985
(41) 471.88 ft on 06/04/2013
(42) 471.83 ft on 12/28/2009
(43) 471.80 ft on 11/21/2009
(44) 471.77 ft on 02/08/2008
(45) 471.53 ft on 02/25/1985
(46) 471.40 ft on 05/07/2017
(47) 471.34 ft on 05/18/1933
(48) 471.32 ft on 03/29/1978
(49) 471.28 ft on 06/26/1960
(50) 471.27 ft on 05/21/1990
(51) 471.25 ft on 07/08/1929
(52) 471.10 ft on 03/23/1984
(53) 471.04 ft on 03/25/1962
(54) 471.03 ft on 04/25/1964
(55) 471.03 ft on 02/23/2014
(56) 470.94 ft on 08/05/1958
(57) 470.92 ft on 06/24/1998
(58) 470.88 ft on 03/20/1982
(59) 470.74 ft on 05/02/1947
(60) 470.68 ft on 08/27/1915
(61) 470.58 ft on 04/12/1938
(62) 470.30 ft on 03/02/2007
(63) 470.27 ft on 04/27/2011
(64) 470.18 ft on 06/19/1945
(65) 470.15 ft on 02/27/1975
(66) 470.07 ft on 04/22/1969
(67) 469.98 ft on 10/06/1927
(68) 469.91 ft on 03/06/1963
(69) 469.54 ft on 03/29/1948
(70) 469.48 ft on 06/10/2015
(71) 469.45 ft on 02/26/2001
(72) 469.44 ft on 03/07/1976
(73) 469.23 ft on 07/31/1992
(74) 469.18 ft on 03/01/1936
(75) 469.15 ft on 02/08/2019 (P)
(76) 469.00 ft on 03/11/2019 (P)
(77) 468.98 ft on 05/12/1935
(78) 468.95 ft on 02/23/1949
(79) 468.88 ft on 10/05/1986
(80) 468.76 ft on 04/28/1966
(81) 468.65 ft on 01/04/2018 (P)
(82) 468.63 ft on 12/21/1971
(83) 468.56 ft on 03/31/2019 (P)
(84) 468.48 ft on 01/11/1946
(85) 468.16 ft on 04/16/1952
(86) 468.12 ft on 05/26/2004
(87) 468.03 ft on 06/04/1980
(88) 467.54 ft on 06/15/1999
(89) 467.31 ft on 07/13/2003
(90) 467.29 ft on 06/06/1965
(91) 467.23 ft on 01/22/1910
(92) 466.89 ft on 03/04/1997
(93) 466.58 ft on 01/21/1937
(94) 466.18 ft on 12/14/1966
(95) 465.87 ft on 06/22/2000
(96) 465.80 ft on 04/03/1953
(97) 465.79 ft on 04/08/2006
(98) 465.78 ft on 01/29/1911
(99) 465.63 ft on 04/30/1921
(100) 465.62 ft on 01/21/1988
(101) 465.50 ft on 05/29/1956
(102) 465.11 ft on 05/28/1989
(103) 465.11 ft on 02/15/1918
(104) 464.24 ft on 02/28/1971
(105) 464.17 ft on 06/17/2018 (P)
(106) 463.64 ft on 02/28/2018 (P)
(107) 462.68 ft on 03/05/1940
(108) 462.60 ft on 06/15/1955
(109) 462.47 ft on 06/13/1941
(110) 460.78 ft on 01/20/1932
(111) 460.56 ft on 05/03/2012
(112) 460.49 ft on 04/13/1954
(113) 459.18 ft on 04/02/1934
(114) 458.40 ft on 09/18/1931

(P): Preliminary values subject to further review.