Historic Crests
(1) 21.00 ft on 05/07/1884
(2) 19.90 ft on 06/01/1900
(3) 18.80 ft on 05/27/1929
(4) 18.70 ft on 05/04/1944
(5) 18.16 ft on 10/17/1994
(6) 17.95 ft on 04/08/1945
(7) 17.80 ft on 05/21/1935
(8) 16.90 ft on 04/10/1922
(9) 16.85 ft on 02/10/1946
(10) 16.72 ft on 05/03/1966
(11) 16.68 ft on 06/01/1990
(12) 16.53 ft on 11/28/1940
(13) 16.50 ft on 05/22/2015
(14) 16.48 ft on 04/30/1957
(15) 16.43 ft on 01/31/1999
(16) 16.40 ft on 06/15/1973
(17) 16.35 ft on 05/19/1953
(18) 16.32 ft on 06/24/1993
(19) 16.27 ft on 05/28/2016
(20) 16.20 ft on 07/19/2007
(21) 16.01 ft on 01/24/2019
(22) 16.00 ft on 05/13/2021
(23) 15.89 ft on 11/02/1941
(24) 15.84 ft on 01/11/1992
(25) 15.84 ft on 01/11/1991
(26) 15.82 ft on 03/19/2016
(27) 15.80 ft on 05/08/1969
(28) 15.80 ft on 03/15/2001
(29) 15.76 ft on 05/10/1958
(30) 15.73 ft on 01/19/1995
(31) 15.66 ft on 05/21/1968
(32) 15.55 ft on 06/04/1950
(33) 15.55 ft on 01/27/1974
(34) 15.50 ft on 05/02/1962
(35) 15.45 ft on 04/21/1979
(36) 15.40 ft on 12/23/1923
(37) 15.39 ft on 03/30/2018
(38) 15.38 ft on 04/12/1995
(39) 15.37 ft on 05/03/2016
(40) 15.31 ft on 01/07/2016
(41) 15.30 ft on 11/19/1946
(42) 15.30 ft on 03/23/2015
(43) 15.29 ft on 12/20/1994
(44) 15.26 ft on 03/08/1995
(45) 15.23 ft on 03/30/1990
(46) 15.21 ft on 05/09/1992
(47) 15.21 ft on 05/09/1991
(48) 15.20 ft on 03/12/2012
(49) 15.15 ft on 03/05/1997
(50) 15.15 ft on 05/05/1990
(51) 15.12 ft on 05/17/1980
(52) 15.10 ft on 12/23/1939
(53) 15.09 ft on 03/25/1993
(54) 15.07 ft on 11/29/1986
(55) 15.06 ft on 11/14/1998
(56) 15.04 ft on 02/17/1975
(57) 15.03 ft on 08/30/2017
(58) 14.98 ft on 02/22/1991
(59) 14.98 ft on 02/22/1992
(60) 14.92 ft on 04/23/1982
(61) 14.83 ft on 04/21/1991
(62) 14.83 ft on 04/21/1992
(63) 14.73 ft on 01/20/1993
(64) 14.60 ft on 05/02/1993
(65) 14.59 ft on 12/12/1998
(66) 14.52 ft on 05/22/1983
(67) 14.46 ft on 05/12/1959
(68) 14.43 ft on 05/24/1965
(69) 14.41 ft on 03/10/1994
(70) 14.36 ft on 05/23/1992
(71) 14.32 ft on 06/05/2017
(72) 14.15 ft on 02/26/1960
(73) 14.13 ft on 03/03/1991
(74) 14.13 ft on 03/03/1992
(75) 14.12 ft on 04/09/1993
(76) 14.12 ft on 11/20/2015
(77) 14.10 ft on 02/12/1948
(78) 13.96 ft on 03/25/1949
(79) 13.92 ft on 04/28/1977
(80) 13.88 ft on 12/27/1992
(81) 13.87 ft on 01/20/2017
(82) 13.84 ft on 02/06/1992
(83) 13.82 ft on 05/13/1954
(84) 13.80 ft on 04/11/1955
(85) 13.79 ft on 08/21/1991
(86) 13.79 ft on 08/21/1992
(87) 13.67 ft on 04/24/1952
(88) 13.63 ft on 02/24/1994
(89) 13.57 ft on 02/27/2018
(90) 13.43 ft on 05/10/1976
(91) 13.23 ft on 04/28/1964
(92) 13.07 ft on 03/12/2018
(93) 12.59 ft on 03/24/1970
(94) 12.20 ft on 04/04/2017
(95) 12.11 ft on 04/14/1967
(96) 12.09 ft on 05/21/1956
(97) 12.00 ft on 03/08/2018

(P): Preliminary values subject to further review.