Historic Crests
(1) 38.00 ft on 01/01/1750
(2) 31.10 ft on 03/27/1913
(3) 30.50 ft on 05/20/1943
(4) 28.00 ft on 03/15/1828
(5) 27.70 ft on 02/18/1883
(6) 27.60 ft on 06/16/1958
(7) 27.38 ft on 01/16/2005
(8) 27.27 ft on 04/22/2013
(9) 26.70 ft on 08/03/1875
(10) 26.60 ft on 02/26/1985
(11) 26.60 ft on 04/15/1858
(12) 26.08 ft on 01/02/1991
(13) 25.84 ft on 12/31/2015
(14) 25.70 ft on 03/27/1904
(15) 25.70 ft on 01/16/1950
(16) 25.30 ft on 02/21/1867
(17) 25.20 ft on 01/08/1950
(18) 25.14 ft on 02/10/2008
(19) 25.10 ft on 05/15/1933
(20) 25.03 ft on 07/13/2003
(21) 25.02 ft on 06/08/2008
(22) 25.00 ft on 01/15/1847
(23) 25.00 ft on 02/25/2018
(24) 25.00 ft on 06/15/1856
(25) 24.90 ft on 02/15/1959
(26) 24.82 ft on 04/15/1994
(27) 24.80 ft on 03/16/1939
(28) 24.73 ft on 05/01/2011
(29) 24.70 ft on 01/23/1907
(30) 24.40 ft on 04/19/1922
(31) 24.00 ft on 01/16/1930
(32) 23.89 ft on 06/17/1998
(33) 23.70 ft on 03/01/1936
(34) 23.50 ft on 02/02/1969
(35) 23.37 ft on 05/06/2017
(36) 23.36 ft on 06/22/2015
(37) 23.32 ft on 01/09/1993
(38) 23.30 ft on 03/10/1908
(39) 23.26 ft on 05/15/2002
(40) 23.00 ft on 06/30/1957
(41) 23.00 ft on 02/02/1916
(42) 23.00 ft on 02/05/1968
(43) 22.98 ft on 06/18/2004
(44) 22.90 ft on 05/06/1983
(45) 22.84 ft on 01/08/2005
(46) 22.80 ft on 02/23/1951
(47) 22.80 ft on 01/25/1974
(48) 22.70 ft on 03/08/1979
(49) 22.60 ft on 11/14/1992
(50) 22.42 ft on 01/27/1999
(51) 22.40 ft on 03/21/1919
(52) 22.30 ft on 04/25/1964
(53) 22.30 ft on 03/18/1982
(54) 22.16 ft on 01/18/2007
(55) 22.08 ft on 05/19/2009
(56) 22.01 ft on 03/14/1990
(57) 22.00 ft on 04/20/1939
(58) 22.00 ft on 03/15/1990
(59) 22.00 ft on 09/05/1866
(60) 21.90 ft on 02/19/1950
(61) 21.90 ft on 03/25/1978
(62) 21.90 ft on 03/02/1997
(63) 21.70 ft on 01/13/2008
(64) 21.70 ft on 05/19/1981
(65) 21.70 ft on 04/13/1938
(66) 21.60 ft on 04/16/1944
(67) 21.50 ft on 04/24/1920
(68) 21.50 ft on 04/04/1922
(69) 21.40 ft on 05/03/1993
(70) 21.30 ft on 04/28/1961
(71) 21.30 ft on 01/16/1937
(72) 21.20 ft on 04/09/1892
(73) 21.20 ft on 03/28/1948
(74) 21.20 ft on 12/05/1927
(75) 21.20 ft on 01/25/1913
(76) 21.12 ft on 12/13/1985
(77) 21.10 ft on 04/25/1970
(78) 21.07 ft on 06/25/2010
(79) 21.00 ft on 12/13/1966
(80) 20.97 ft on 04/09/1908
(81) 20.94 ft on 03/15/2009
(82) 20.90 ft on 03/19/1925
(83) 20.90 ft on 07/04/1938
(84) 20.90 ft on 05/30/1927
(85) 20.78 ft on 02/14/2009
(86) 20.70 ft on 09/12/1926
(87) 20.60 ft on 05/03/1959
(88) 20.60 ft on 05/13/1996
(89) 20.60 ft on 01/26/1904
(90) 20.60 ft on 06/05/1892
(91) 20.60 ft on 01/24/1949
(92) 20.60 ft on 03/10/1963
(93) 20.50 ft on 01/30/1950
(94) 20.40 ft on 04/12/1926
(95) 20.40 ft on 01/06/2004
(96) 20.40 ft on 02/25/2014
(97) 20.40 ft on 02/21/1976
(98) 20.30 ft on 12/27/1967
(99) 20.30 ft on 04/08/1950
(100) 20.20 ft on 04/24/1972
(101) 20.20 ft on 11/19/1993
(102) 20.10 ft on 04/17/1903
(103) 20.10 ft on 03/25/1933
(104) 20.03 ft on 03/06/2011
(105) 20.00 ft on 01/04/1973
(106) 20.00 ft on 06/07/1980
(107) 20.00 ft on 04/02/1924
(108) 19.94 ft on 01/24/2017
(109) 19.90 ft on 04/03/1912
(110) 19.80 ft on 12/24/1957
(111) 19.80 ft on 02/20/1949
(112) 19.80 ft on 03/27/1984
(113) 19.80 ft on 04/01/1906
(114) 19.78 ft on 05/29/1989
(115) 19.75 ft on 05/29/1996
(116) 19.70 ft on 03/15/1997
(117) 19.70 ft on 03/20/1923
(118) 19.70 ft on 04/12/1957
(119) 19.57 ft on 03/24/1998
(120) 19.50 ft on 02/17/1918
(121) 19.40 ft on 01/26/1993
(122) 19.40 ft on 01/22/1910
(123) 19.40 ft on 05/09/1961
(124) 19.30 ft on 05/20/1929
(125) 19.20 ft on 07/04/1902
(126) 19.20 ft on 03/26/1962
(127) 19.07 ft on 04/01/1998
(128) 19.05 ft on 04/09/2014
(129) 19.00 ft on 01/29/2012
(130) 19.00 ft on 02/27/1975
(131) 19.00 ft on 07/05/1993
(132) 19.00 ft on 04/26/1944
(133) 18.92 ft on 03/20/2008
(134) 18.90 ft on 06/09/1947
(135) 18.70 ft on 06/25/1960
(136) 18.60 ft on 11/06/1992
(137) 18.50 ft on 02/11/1942
(138) 18.44 ft on 03/09/1993
(139) 18.42 ft on 05/11/1998
(140) 18.40 ft on 05/01/1996
(141) 18.40 ft on 04/07/1945
(142) 18.40 ft on 03/11/1897
(143) 18.30 ft on 07/20/1958
(144) 18.30 ft on 05/21/1945
(145) 18.20 ft on 11/16/1993
(146) 18.20 ft on 11/08/1936
(147) 18.10 ft on 05/08/1935
(148) 18.01 ft on 05/21/1995
(149) 18.00 ft on 02/24/1971
(150) 18.00 ft on 05/25/2017
(151) 17.95 ft on 06/17/1997
(152) 17.95 ft on 12/05/2006
(153) 17.93 ft on 02/26/1997
(154) 17.91 ft on 04/20/1992
(155) 17.90 ft on 02/28/1909
(156) 17.90 ft on 01/31/1994
(157) 17.87 ft on 04/29/1993
(158) 17.84 ft on 04/17/1993
(159) 17.84 ft on 04/10/2017
(160) 17.82 ft on 05/17/1908
(161) 17.80 ft on 12/27/1949
(162) 17.80 ft on 05/05/1947
(163) 17.67 ft on 02/17/2001
(164) 17.60 ft on 01/26/1929
(165) 17.60 ft on 02/02/1962
(166) 17.60 ft on 01/23/1932
(167) 17.60 ft on 04/25/1957
(168) 17.58 ft on 07/15/2017
(169) 17.50 ft on 03/22/1938
(170) 17.50 ft on 04/02/1921
(171) 17.50 ft on 04/13/1965
(172) 17.49 ft on 05/30/1995
(173) 17.49 ft on 05/06/1998
(174) 17.40 ft on 01/26/1906
(175) 17.40 ft on 11/25/1992
(176) 17.36 ft on 01/15/2013
(177) 17.30 ft on 03/17/1952
(178) 17.30 ft on 02/02/1952
(179) 17.30 ft on 04/03/1960
(180) 17.30 ft on 07/13/1951
(181) 17.29 ft on 11/23/2017
(182) 17.24 ft on 03/15/2006
(183) 17.20 ft on 08/01/1996
(184) 17.19 ft on 03/10/1995
(185) 17.10 ft on 04/12/1914
(186) 17.10 ft on 01/12/1949
(187) 17.03 ft on 06/13/1996
(188) 17.00 ft on 05/17/1905
(189) 16.90 ft on 04/15/1942
(190) 16.90 ft on 12/11/1950
(191) 16.80 ft on 05/30/1952
(192) 16.80 ft on 04/15/1998
(193) 16.80 ft on 12/20/1929
(194) 16.80 ft on 05/21/1968
(195) 16.80 ft on 06/18/1952
(196) 16.71 ft on 04/03/2016
(197) 16.70 ft on 04/12/1988
(198) 16.70 ft on 06/01/1956
(199) 16.60 ft on 02/25/1939
(200) 16.60 ft on 07/16/1962
(201) 16.60 ft on 08/05/1958
(202) 16.50 ft on 03/03/1962
(203) 16.50 ft on 02/15/1960
(204) 16.50 ft on 04/29/1952
(205) 16.40 ft on 03/17/1962
(206) 16.40 ft on 03/02/1930
(207) 16.40 ft on 01/08/1951
(208) 16.38 ft on 10/20/1993
(209) 16.33 ft on 03/27/1993
(210) 16.33 ft on 03/16/2015
(211) 16.30 ft on 03/20/1953
(212) 16.30 ft on 04/11/1937
(213) 16.20 ft on 04/17/1951
(214) 16.20 ft on 04/06/1993
(215) 16.20 ft on 11/29/1993
(216) 16.10 ft on 01/09/1946
(217) 16.10 ft on 02/19/1946
(218) 16.01 ft on 12/05/1993
(219) 16.00 ft on 04/18/1952
(220) 16.00 ft on 03/24/1943
(221) 16.00 ft on 06/24/1952
(222) 16.00 ft on 06/19/1945
(223) 16.00 ft on 04/11/1929
(224) 15.90 ft on 03/22/1942
(225) 15.90 ft on 03/24/1961
(226) 15.90 ft on 01/03/1943
(227) 15.90 ft on 01/06/1952
(228) 15.80 ft on 05/03/1937
(229) 15.80 ft on 09/24/1950
(230) 15.80 ft on 03/28/1967
(231) 15.70 ft on 12/31/1932
(232) 15.70 ft on 04/29/1950
(233) 15.70 ft on 02/25/1938
(234) 15.68 ft on 06/27/2000
(235) 15.60 ft on 04/09/1964
(236) 15.60 ft on 04/12/2016
(237) 15.60 ft on 07/10/1929
(238) 15.55 ft on 07/13/1993
(239) 15.50 ft on 02/27/1956
(240) 15.50 ft on 03/04/1948
(241) 15.40 ft on 05/24/1957
(242) 15.40 ft on 04/13/1906
(243) 15.40 ft on 06/11/1997
(244) 15.40 ft on 04/29/1965
(245) 15.40 ft on 03/19/1917
(246) 15.40 ft on 10/07/1945
(247) 15.38 ft on 03/17/2016
(248) 15.33 ft on 05/05/1996
(249) 15.30 ft on 04/06/1929
(250) 15.20 ft on 06/21/1946
(251) 15.20 ft on 03/10/1953
(252) 15.20 ft on 04/09/1968
(253) 15.19 ft on 05/06/1996
(254) 15.10 ft on 03/05/1905
(255) 15.10 ft on 04/22/1933
(256) 15.10 ft on 05/07/1936
(257) 15.00 ft on 02/09/1928
(258) 14.99 ft on 05/02/1994
(259) 14.99 ft on 07/24/1996
(260) 14.96 ft on 06/18/1996
(261) 14.95 ft on 01/12/1998
(262) 14.90 ft on 02/20/1928
(263) 14.90 ft on 04/07/1959
(264) 14.90 ft on 07/07/1928
(265) 14.84 ft on 07/04/2017
(266) 14.80 ft on 07/09/1915
(267) 14.80 ft on 03/22/1946
(268) 14.70 ft on 03/09/1955
(269) 14.39 ft on 04/11/2015
(270) 14.37 ft on 03/13/1998
(271) 14.37 ft on 11/28/2014
(272) 14.31 ft on 06/25/1996
(273) 14.30 ft on 02/06/1997
(274) 14.29 ft on 06/20/2017
(275) 14.22 ft on 02/09/1997
(276) 14.20 ft on 01/11/1955
(277) 14.20 ft on 07/25/2017
(278) 14.16 ft on 07/17/1993
(279) 14.16 ft on 05/21/1998
(280) 14.08 ft on 01/24/1997
(281) 13.90 ft on 06/05/1997
(282) 13.89 ft on 08/18/1993
(283) 13.84 ft on 09/17/1993
(284) 13.81 ft on 05/29/1997
(285) 13.80 ft on 06/13/1997
(286) 13.80 ft on 12/27/1996
(287) 13.80 ft on 02/01/1911
(288) 13.50 ft on 03/09/1994
(289) 13.45 ft on 04/15/1995
(290) 13.40 ft on 09/17/1977
(291) 13.36 ft on 05/02/1998
(292) 13.20 ft on 03/08/1940
(293) 13.00 ft on 09/04/1993
(294) 13.00 ft on 12/19/1992
(295) 12.85 ft on 08/21/2002
(296) 12.75 ft on 03/10/1994
(297) 12.63 ft on 05/08/1994
(298) 12.46 ft on 04/24/1996
(299) 12.37 ft on 08/24/2002
(300) 12.31 ft on 07/07/1987
(301) 12.21 ft on 03/01/2016
(302) 11.90 ft on 01/23/1995
(303) 11.60 ft on 12/15/1996
(304) 11.41 ft on 07/01/1995
(305) 11.13 ft on 01/21/1996
(306) 10.90 ft on 01/08/1997
(307) 10.80 ft on 05/01/1966
(308) 10.70 ft on 04/02/1934
(309) 10.30 ft on 05/06/1997
(310) 10.10 ft on 09/16/1931
(311) 9.80 ft on 04/14/1954
(312) 9.20 ft on 06/16/1941
(313) 8.97 ft on 07/09/1994
(314) 8.94 ft on 06/16/1994
(315) 8.80 ft on 02/23/1998
(316) 8.71 ft on 06/29/1994
(317) 6.80 ft on 03/02/1895
(318) 0.00 ft on 02/19/1942

(P): Preliminary values subject to further review.