Historic Crests
(1) 30.00 ft on 08/01/1875
(2) 24.80 ft on 03/26/1913
(3) 23.53 ft on 01/04/1950
(4) 23.48 ft on 06/07/2008
(5) 23.39 ft on 06/29/1957
(6) 22.56 ft on 04/19/2013
(7) 22.19 ft on 05/08/1961
(8) 22.04 ft on 03/05/1963
(9) 21.59 ft on 12/30/1990
(10) 21.58 ft on 01/06/2005
(11) 21.54 ft on 11/15/1993
(12) 21.53 ft on 04/04/2018 (P)
(13) 21.52 ft on 05/24/1968
(14) 21.37 ft on 08/18/1993
(15) 21.33 ft on 05/28/1996
(16) 21.32 ft on 05/18/1943
(17) 21.11 ft on 04/20/2011
(18) 21.08 ft on 01/19/1949
(19) 21.03 ft on 06/05/2008
(20) 20.95 ft on 01/13/2013
(21) 20.79 ft on 01/23/1999
(22) 20.78 ft on 05/11/1943
(23) 20.77 ft on 09/02/2003
(24) 20.75 ft on 04/01/1938
(25) 20.73 ft on 04/28/2011
(26) 20.71 ft on 05/13/2002
(27) 20.71 ft on 11/20/1985
(28) 20.62 ft on 01/30/1969
(29) 20.57 ft on 01/12/2020 (P)
(30) 20.50 ft on 06/23/1952
(31) 20.46 ft on 02/12/2009
(32) 20.45 ft on 06/24/1960
(33) 20.43 ft on 02/14/1950
(34) 20.37 ft on 04/12/1944
(35) 20.33 ft on 02/27/1997
(36) 20.29 ft on 03/06/2011
(37) 20.27 ft on 12/20/1957
(38) 20.25 ft on 07/29/1979
(39) 20.24 ft on 01/27/1950
(40) 20.24 ft on 04/17/1939
(41) 20.23 ft on 03/19/2008
(42) 20.21 ft on 03/15/1978
(43) 20.20 ft on 11/13/1992
(44) 20.13 ft on 01/16/1950
(45) 20.11 ft on 05/05/2017 (P)
(46) 20.09 ft on 05/17/1990
(47) 20.08 ft on 01/22/1959
(48) 20.00 ft on 07/29/1979
(49) 19.87 ft on 06/10/2008
(50) 19.87 ft on 01/05/2004
(51) 19.82 ft on 02/23/1975
(52) 19.82 ft on 04/30/1996
(53) 19.80 ft on 03/13/1939
(54) 19.79 ft on 04/24/1944
(55) 19.77 ft on 03/27/1948
(56) 19.77 ft on 07/21/1973
(57) 19.77 ft on 07/02/1987
(58) 19.72 ft on 09/16/1989
(59) 19.70 ft on 02/06/2008
(60) 19.69 ft on 04/21/1964
(61) 19.68 ft on 02/23/1985
(62) 19.66 ft on 09/02/1950
(63) 19.57 ft on 04/09/1938
(64) 19.55 ft on 01/16/2007
(65) 19.51 ft on 06/16/1998
(66) 19.50 ft on 12/28/2015 (P)
(67) 19.47 ft on 02/08/2019
(68) 19.44 ft on 12/22/2013
(69) 19.43 ft on 05/17/1945
(70) 19.41 ft on 03/22/1962
(71) 19.40 ft on 01/31/1939
(72) 19.36 ft on 12/18/1937
(73) 19.35 ft on 01/27/1952
(74) 19.32 ft on 03/01/2011
(75) 19.31 ft on 06/08/1947
(76) 19.27 ft on 02/05/1971
(77) 19.23 ft on 11/18/1993
(78) 19.22 ft on 04/04/2014
(79) 19.20 ft on 03/14/1997
(80) 19.13 ft on 01/14/2005
(81) 19.06 ft on 11/04/1936
(82) 19.06 ft on 01/11/1950
(83) 19.03 ft on 04/01/1945
(84) 19.02 ft on 07/11/2003
(85) 19.00 ft on 03/13/2006
(86) 19.00 ft on 02/16/1949
(87) 18.99 ft on 05/12/2003
(88) 18.97 ft on 01/05/1993
(89) 18.96 ft on 03/28/1950
(90) 18.94 ft on 01/06/1949
(91) 18.87 ft on 09/23/1950
(92) 18.82 ft on 03/12/1952
(93) 18.81 ft on 03/04/1953
(94) 18.80 ft on 12/26/1982
(95) 18.76 ft on 04/14/1952
(96) 18.75 ft on 03/16/1938
(97) 18.73 ft on 11/16/1955
(98) 18.72 ft on 04/12/1994
(99) 18.71 ft on 04/07/1988
(100) 18.70 ft on 03/21/1933
(101) 18.67 ft on 07/03/1938
(102) 18.65 ft on 02/26/1956
(103) 18.63 ft on 02/07/1942
(104) 18.60 ft on 01/01/1933
(105) 18.58 ft on 01/31/1982
(106) 18.57 ft on 10/06/2000
(107) 18.51 ft on 06/12/1941
(108) 18.48 ft on 06/18/1945
(109) 18.48 ft on 04/02/1945
(110) 18.42 ft on 12/09/1966
(111) 18.38 ft on 01/21/1937
(112) 18.36 ft on 05/05/1996
(113) 18.34 ft on 05/11/1981
(114) 18.32 ft on 04/05/1950
(115) 18.32 ft on 04/25/1970
(116) 18.25 ft on 05/29/1996
(117) 18.24 ft on 05/18/1946
(118) 18.21 ft on 02/21/1951
(119) 18.19 ft on 06/23/2010
(120) 18.15 ft on 04/10/1942
(121) 18.11 ft on 05/19/1995
(122) 18.10 ft on 01/18/1932
(123) 18.08 ft on 05/09/1996
(124) 18.08 ft on 01/28/1949
(125) 18.03 ft on 11/21/1950
(126) 18.02 ft on 04/18/1992
(127) 18.01 ft on 02/11/2020 (P)
(128) 18.00 ft on 06/17/2019
(129) 17.97 ft on 02/25/2018 (P)
(130) 17.96 ft on 03/27/1949
(131) 17.95 ft on 03/24/1948
(132) 17.94 ft on 01/31/1947
(133) 17.91 ft on 03/08/1995
(134) 17.84 ft on 01/23/1997
(135) 17.63 ft on 04/24/1996
(136) 17.59 ft on 12/27/1973
(137) 17.59 ft on 10/15/2001
(138) 17.58 ft on 04/22/1984
(139) 17.45 ft on 01/02/1948
(140) 17.40 ft on 01/28/1994
(141) 17.40 ft on 01/23/1932
(142) 17.38 ft on 03/06/1938
(143) 17.24 ft on 12/02/2006
(144) 17.24 ft on 05/12/1946
(145) 17.23 ft on 02/14/1946
(146) 17.20 ft on 04/19/1933
(147) 17.15 ft on 01/21/2017 (P)
(148) 17.09 ft on 05/11/1996
(149) 17.08 ft on 04/10/1994
(150) 17.06 ft on 05/10/1965
(151) 17.03 ft on 05/07/1935
(152) 17.02 ft on 07/13/2015
(153) 17.01 ft on 04/12/2016 (P)
(154) 16.99 ft on 01/09/1937
(155) 16.93 ft on 06/22/2015
(156) 16.75 ft on 12/16/1971
(157) 16.74 ft on 11/18/1942
(158) 16.71 ft on 04/26/1947
(159) 16.65 ft on 04/20/1940
(160) 16.40 ft on 12/25/1932
(161) 16.38 ft on 01/24/2019
(162) 16.22 ft on 12/31/2019 (P)
(163) 16.00 ft on 06/28/1932
(164) 15.92 ft on 04/20/2019
(165) 15.86 ft on 03/31/1980
(166) 15.84 ft on 04/10/2015
(167) 15.81 ft on 03/21/1998
(168) 15.76 ft on 09/03/1993
(169) 15.59 ft on 03/28/1977
(170) 15.54 ft on 03/05/1993
(171) 15.37 ft on 03/05/1976
(172) 15.17 ft on 07/14/2017 (P)
(173) 15.10 ft on 11/03/1992
(174) 14.60 ft on 03/18/1998
(175) 14.57 ft on 12/15/2011
(176) 14.53 ft on 03/19/1998
(177) 14.10 ft on 12/24/1996
(178) 14.00 ft on 04/16/1998
(179) 13.98 ft on 06/11/1996
(180) 13.80 ft on 09/30/1955
(181) 13.77 ft on 09/17/2016 (P)
(182) 13.76 ft on 06/12/1996
(183) 13.74 ft on 11/02/2018
(184) 13.60 ft on 05/01/1998
(185) 13.28 ft on 03/25/1996
(186) 13.21 ft on 01/24/1996
(187) 13.10 ft on 02/04/1997
(188) 13.01 ft on 09/09/2018
(189) 12.88 ft on 06/18/1996
(190) 12.74 ft on 08/18/2000
(191) 12.71 ft on 06/22/1997
(192) 12.63 ft on 06/02/1997
(193) 12.56 ft on 01/19/1996
(194) 12.44 ft on 06/24/2017 (P)
(195) 12.40 ft on 06/07/1996
(196) 12.20 ft on 04/10/1993
(197) 11.90 ft on 06/09/1997
(198) 11.85 ft on 09/27/2018
(199) 11.84 ft on 06/17/2004
(200) 11.20 ft on 01/05/1997
(201) 11.07 ft on 02/11/1966
(202) 10.88 ft on 05/20/1998
(203) 10.60 ft on 05/08/1998
(204) 7.28 ft on 04/06/1954

(P): Preliminary values subject to further review.