Historic Crests
(1) 30.00 ft on 03/26/1913
(2) 24.00 ft on 02/01/1916
(3) 24.00 ft on 03/27/1904
(4) 23.00 ft on 03/21/1927
(5) 21.57 ft on 01/16/1937
(6) 21.39 ft on 05/18/1943
(7) 21.28 ft on 05/13/1933
(8) 20.51 ft on 12/31/1990
(9) 20.50 ft on 01/15/1930
(10) 20.20 ft on 05/28/1956
(11) 19.88 ft on 04/22/1964
(12) 19.65 ft on 09/01/2003
(13) 19.46 ft on 04/01/1938
(14) 19.03 ft on 06/30/1957
(15) 18.87 ft on 06/15/1958
(16) 18.65 ft on 01/05/1950
(17) 18.60 ft on 11/17/1993
(18) 18.53 ft on 01/06/2005
(19) 18.43 ft on 01/14/2005
(20) 18.28 ft on 04/17/1939
(21) 17.97 ft on 04/20/2013
(22) 17.91 ft on 04/09/1938
(23) 17.55 ft on 03/06/1963
(24) 17.52 ft on 06/11/1958
(25) 17.49 ft on 02/25/1985
(26) 17.29 ft on 03/21/1933
(27) 17.25 ft on 04/12/1944
(28) 17.19 ft on 07/11/2003
(29) 16.95 ft on 12/18/1937
(30) 16.87 ft on 03/14/1939
(31) 16.80 ft on 02/16/1950
(32) 16.63 ft on 05/14/2002
(33) 16.63 ft on 03/25/2007
(34) 16.61 ft on 01/24/1999
(35) 16.43 ft on 06/15/1998
(36) 16.42 ft on 03/01/2011
(37) 16.30 ft on 02/27/1936
(38) 16.26 ft on 05/05/2017 (P)
(39) 16.23 ft on 01/15/2013
(40) 15.90 ft on 12/31/1932
(41) 15.77 ft on 04/25/1961
(42) 15.76 ft on 04/06/1948
(43) 15.62 ft on 05/12/1943
(44) 15.60 ft on 01/28/1962
(45) 15.55 ft on 01/16/1950
(46) 15.48 ft on 06/05/1980
(47) 15.44 ft on 01/26/1950
(48) 15.41 ft on 07/02/1938
(49) 15.35 ft on 02/07/2008
(50) 15.04 ft on 03/27/1948
(51) 15.00 ft on 01/30/1969
(52) 14.97 ft on 07/28/1979
(53) 14.96 ft on 04/05/2018 (P)
(54) 14.90 ft on 01/22/1937
(55) 14.86 ft on 12/23/2013
(56) 14.83 ft on 12/20/1957
(57) 14.79 ft on 07/07/2003
(58) 14.75 ft on 03/04/1979
(59) 14.70 ft on 11/14/1992
(60) 14.69 ft on 12/12/1985
(61) 14.65 ft on 03/17/1978
(62) 14.63 ft on 06/23/2010
(63) 14.60 ft on 02/25/1975
(64) 14.51 ft on 03/01/1997
(65) 14.49 ft on 01/19/1949
(66) 14.48 ft on 06/29/2015
(67) 14.43 ft on 01/22/1959
(68) 14.40 ft on 06/21/1992
(69) 14.40 ft on 02/28/1997
(70) 14.33 ft on 06/20/1992
(71) 14.30 ft on 12/10/1966
(72) 14.28 ft on 04/06/1957
(73) 14.23 ft on 06/28/1938
(74) 14.13 ft on 01/16/2007
(75) 14.07 ft on 02/23/1951
(76) 14.06 ft on 02/24/1979
(77) 14.04 ft on 04/14/1948
(78) 13.98 ft on 04/04/2014
(79) 13.96 ft on 04/06/1937
(80) 13.94 ft on 04/22/1972
(81) 13.94 ft on 03/17/1938
(82) 13.93 ft on 06/26/1978
(83) 13.81 ft on 02/10/1959
(84) 13.79 ft on 02/03/1968
(85) 13.68 ft on 09/04/1989
(86) 13.68 ft on 12/29/2015 (P)
(87) 13.67 ft on 05/04/1935
(88) 13.50 ft on 02/17/1976
(89) 13.47 ft on 04/02/1945
(90) 13.46 ft on 03/11/1964
(91) 13.46 ft on 01/21/1974
(92) 13.39 ft on 05/28/1989
(93) 13.37 ft on 06/18/1945
(94) 13.25 ft on 12/28/1973
(95) 13.24 ft on 08/03/1958
(96) 13.23 ft on 01/31/1939
(97) 13.22 ft on 01/06/2004
(98) 13.20 ft on 03/23/1978
(99) 13.20 ft on 12/26/1932
(100) 13.16 ft on 01/29/1952
(101) 13.13 ft on 03/24/1948
(102) 13.12 ft on 03/13/1982
(103) 13.03 ft on 01/29/1994
(104) 13.01 ft on 04/19/1933
(105) 12.96 ft on 05/16/1990
(106) 12.93 ft on 02/17/1990
(107) 12.85 ft on 04/21/1940
(108) 12.80 ft on 06/11/1990
(109) 12.80 ft on 10/04/1986
(110) 12.77 ft on 06/12/2004
(111) 12.76 ft on 03/12/1990
(112) 12.73 ft on 02/07/1942
(113) 12.69 ft on 06/23/1974
(114) 12.65 ft on 02/20/1938
(115) 12.64 ft on 07/09/2017 (P)
(116) 12.60 ft on 01/10/1937
(117) 12.60 ft on 12/03/2006
(118) 12.55 ft on 12/31/1936
(119) 12.54 ft on 04/13/1994
(120) 12.50 ft on 03/25/1938
(121) 12.44 ft on 03/27/1933
(122) 12.43 ft on 11/28/1985
(123) 12.36 ft on 02/13/2009
(124) 12.34 ft on 12/17/1977
(125) 12.33 ft on 11/19/1985
(126) 12.32 ft on 09/14/1989
(127) 12.30 ft on 02/20/1971
(128) 12.24 ft on 05/09/1996
(129) 12.23 ft on 02/23/1982
(130) 12.22 ft on 12/09/1932
(131) 12.22 ft on 01/19/1969
(132) 12.21 ft on 05/08/1935
(133) 12.13 ft on 03/29/1950
(134) 12.11 ft on 03/02/1939
(135) 12.08 ft on 02/01/1937
(136) 12.04 ft on 01/28/1949
(137) 12.04 ft on 04/20/1992
(138) 12.04 ft on 11/16/1972
(139) 12.01 ft on 02/25/2018 (P)
(140) 11.96 ft on 03/07/1938
(141) 11.95 ft on 02/17/1949
(142) 11.91 ft on 03/17/1984
(143) 11.89 ft on 02/14/1938
(144) 11.88 ft on 03/20/1986
(145) 11.87 ft on 03/18/1942
(146) 11.87 ft on 04/07/1988
(147) 11.86 ft on 02/10/1937
(148) 11.86 ft on 02/12/1976
(149) 11.85 ft on 04/06/1989
(150) 11.84 ft on 04/11/1942
(151) 11.82 ft on 05/20/1995
(152) 11.77 ft on 07/15/1992
(153) 11.75 ft on 04/11/1998
(154) 11.74 ft on 01/03/1948
(155) 11.73 ft on 04/02/1985
(156) 11.70 ft on 12/25/1996
(157) 11.70 ft on 09/16/1989
(158) 11.64 ft on 06/16/2004
(159) 11.64 ft on 02/28/1962
(160) 11.61 ft on 03/06/1976
(161) 11.60 ft on 04/09/1965
(162) 11.60 ft on 05/04/1983
(163) 11.58 ft on 08/01/1979
(164) 11.56 ft on 01/21/2017 (P)
(165) 11.55 ft on 04/30/1959
(166) 11.50 ft on 03/15/1997
(167) 11.50 ft on 11/24/1992
(168) 11.49 ft on 03/22/1984
(169) 11.48 ft on 01/31/1968
(170) 11.48 ft on 09/10/2018
(171) 11.43 ft on 03/19/1963
(172) 11.43 ft on 02/25/1956
(173) 11.43 ft on 03/04/1953
(174) 11.42 ft on 03/15/1961
(175) 11.38 ft on 05/22/1957
(176) 11.38 ft on 12/22/1967
(177) 11.29 ft on 03/21/1998
(178) 11.28 ft on 03/19/1943
(179) 11.27 ft on 06/03/1997
(180) 11.26 ft on 03/27/1973
(181) 11.25 ft on 04/05/1974
(182) 11.22 ft on 02/05/1952
(183) 11.21 ft on 02/11/1965
(184) 11.20 ft on 11/03/1992
(185) 11.19 ft on 01/24/1997
(186) 11.16 ft on 04/25/1944
(187) 11.15 ft on 05/29/1981
(188) 11.12 ft on 01/24/1974
(189) 11.11 ft on 05/02/1947
(190) 11.10 ft on 11/20/1969
(191) 11.09 ft on 11/20/2017 (P)
(192) 11.05 ft on 12/31/1945
(193) 11.04 ft on 12/16/1971
(194) 11.03 ft on 12/06/1950
(195) 11.02 ft on 01/30/1970
(196) 11.00 ft on 01/10/2008
(197) 11.00 ft on 04/25/1970
(198) 10.94 ft on 07/07/1953
(199) 10.93 ft on 07/04/1993
(200) 10.92 ft on 11/04/1972
(201) 10.90 ft on 04/25/1975
(202) 10.90 ft on 05/09/1998
(203) 10.88 ft on 04/20/1969
(204) 10.86 ft on 03/13/1985
(205) 10.85 ft on 08/28/1978
(206) 10.84 ft on 09/11/1989
(207) 10.84 ft on 10/03/1945
(208) 10.83 ft on 03/21/1982
(209) 10.83 ft on 03/10/1980
(210) 10.83 ft on 11/19/1955
(211) 10.81 ft on 03/22/1962
(212) 10.75 ft on 03/18/1946
(213) 10.73 ft on 12/13/1983
(214) 10.73 ft on 05/25/1953
(215) 10.70 ft on 03/31/1974
(216) 10.62 ft on 01/29/1974
(217) 10.60 ft on 01/20/1996
(218) 10.60 ft on 05/08/1998
(219) 10.60 ft on 12/27/1957
(220) 10.60 ft on 01/31/1982
(221) 10.57 ft on 06/04/1947
(222) 10.56 ft on 03/10/1942
(223) 10.54 ft on 04/29/1975
(224) 10.53 ft on 10/01/1986
(225) 10.52 ft on 06/08/1980
(226) 10.52 ft on 11/03/2018
(227) 10.48 ft on 02/11/1960
(228) 10.46 ft on 05/10/1961
(229) 10.39 ft on 03/30/1975
(230) 10.38 ft on 05/17/1945
(231) 10.38 ft on 04/24/1984
(232) 10.37 ft on 04/06/1950
(233) 10.36 ft on 03/14/1991
(234) 10.35 ft on 01/08/1955
(235) 10.33 ft on 04/25/1996
(236) 10.32 ft on 01/11/1975
(237) 10.31 ft on 02/01/1947
(238) 10.30 ft on 06/07/1973
(239) 10.29 ft on 02/06/1986
(240) 10.28 ft on 03/14/1986
(241) 10.28 ft on 01/02/1985
(242) 10.26 ft on 08/15/1973
(243) 10.21 ft on 03/12/1973
(244) 10.20 ft on 04/08/1978
(245) 10.13 ft on 04/07/1985
(246) 10.13 ft on 06/17/1957
(247) 10.13 ft on 01/05/1982
(248) 10.12 ft on 04/24/1973
(249) 10.12 ft on 03/19/1991
(250) 10.12 ft on 04/13/1979
(251) 10.11 ft on 07/26/1992
(252) 10.09 ft on 07/31/1958
(253) 10.03 ft on 02/04/1990
(254) 10.02 ft on 03/09/1995
(255) 10.00 ft on 03/28/1934
(256) 10.00 ft on 12/23/1990
(257) 9.99 ft on 02/06/1971
(258) 9.95 ft on 03/24/1991
(259) 9.95 ft on 02/13/1951
(260) 9.89 ft on 12/29/1968
(261) 9.82 ft on 04/27/1947
(262) 9.50 ft on 02/06/1997
(263) 9.12 ft on 02/11/2001
(264) 8.78 ft on 02/27/1977
(265) 8.54 ft on 04/06/1954
(266) 8.10 ft on 03/11/1998
(267) 7.59 ft on 02/12/1966
(268) 7.25 ft on 06/16/2000
(269) 7.07 ft on 06/14/1941
(270) 4.30 ft on 04/04/1931

(P): Preliminary values subject to further review.