Historic Crests
(1) 80.00 ft on 01/26/1937
(2) 71.10 ft on 02/14/1884
(3) 69.90 ft on 04/01/1913
(4) 69.20 ft on 03/07/1945
(5) 66.30 ft on 02/15/1883
(6) 66.20 ft on 03/11/1964
(7) 65.20 ft on 01/21/1907
(8) 64.80 ft on 04/18/1948
(9) 64.70 ft on 03/05/1997
(10) 63.60 ft on 03/21/1933
(11) 62.20 ft on 01/14/1913
(12) 62.10 ft on 03/18/1907
(13) 61.80 ft on 02/12/1918
(14) 61.40 ft on 03/29/1898
(15) 61.32 ft on 03/03/1962
(16) 61.27 ft on 03/01/1962
(17) 61.20 ft on 02/01/1918
(18) 61.20 ft on 02/26/1897
(19) 61.00 ft on 03/10/1955
(20) 60.80 ft on 01/04/1943
(21) 60.60 ft on 03/28/1936
(22) 60.04 ft on 04/24/1940
(23) 59.90 ft on 03/23/1943
(24) 59.80 ft on 03/11/1967
(25) 59.70 ft on 04/27/1901
(26) 59.40 ft on 03/10/1963
(27) 59.20 ft on 03/25/1890
(28) 59.10 ft on 01/27/1927
(29) 59.00 ft on 02/05/1950
(30) 58.60 ft on 02/21/1882
(31) 58.60 ft on 03/01/1979
(32) 58.40 ft on 12/12/1978
(33) 58.30 ft on 02/07/1939
(34) 58.10 ft on 04/19/1939
(35) 58.00 ft on 05/10/1958
(36) 57.72 ft on 03/15/2015
(37) 57.40 ft on 03/08/1899
(38) 57.40 ft on 02/25/1891
(39) 57.30 ft on 01/24/1996
(40) 57.30 ft on 01/24/1862
(41) 56.90 ft on 01/03/1991
(42) 56.90 ft on 02/02/1952
(43) 56.90 ft on 03/01/1890
(44) 56.80 ft on 05/30/1968
(45) 56.66 ft on 01/11/2005
(46) 56.30 ft on 02/06/1887
(47) 56.20 ft on 03/07/1865
(48) 56.10 ft on 12/27/1921
(49) 56.10 ft on 03/17/1917
(50) 56.00 ft on 12/10/1950
(51) 55.90 ft on 04/04/1908
(52) 55.90 ft on 02/07/1915
(53) 55.89 ft on 03/13/2011
(54) 55.80 ft on 01/06/1924
(55) 55.80 ft on 04/09/1886
(56) 55.70 ft on 03/15/1867
(57) 55.50 ft on 01/26/1959
(58) 55.40 ft on 02/22/1859
(59) 55.40 ft on 08/06/1875
(60) 55.35 ft on 05/09/1961
(61) 55.33 ft on 04/26/2011
(62) 55.20 ft on 01/19/1870
(63) 55.10 ft on 03/18/1967
(64) 54.98 ft on 03/17/1978
(65) 54.90 ft on 02/20/1893
(66) 54.60 ft on 01/31/1994
(67) 54.60 ft on 03/22/1920
(68) 54.60 ft on 02/28/1909
(69) 54.60 ft on 02/28/1887
(70) 54.50 ft on 02/22/2000
(71) 54.10 ft on 05/15/1933
(72) 54.00 ft on 01/29/1978
(73) 54.00 ft on 02/18/1948
(74) 54.00 ft on 04/10/1936
(75) 53.81 ft on 12/13/1972
(76) 53.80 ft on 01/20/1877
(77) 53.80 ft on 05/16/1996
(78) 53.50 ft on 04/01/1916
(79) 53.49 ft on 01/14/1974
(80) 53.40 ft on 03/27/1912
(81) 53.40 ft on 03/11/1908
(82) 53.37 ft on 01/09/2004
(83) 53.20 ft on 03/07/1961
(84) 53.20 ft on 03/18/1956
(85) 53.20 ft on 01/14/1916
(86) 53.20 ft on 03/05/1903
(87) 53.20 ft on 02/17/1880
(88) 53.00 ft on 02/18/1966
(89) 53.00 ft on 12/23/1990
(90) 52.99 ft on 03/08/2015
(91) 52.90 ft on 01/11/1950
(92) 52.70 ft on 03/04/1929
(93) 52.60 ft on 01/30/1949
(94) 52.60 ft on 04/23/1920
(95) 52.50 ft on 12/02/1985
(96) 52.40 ft on 03/16/1935
(97) 52.30 ft on 04/11/1957
(98) 52.30 ft on 03/13/1994
(99) 52.20 ft on 02/19/1989
(100) 52.20 ft on 03/18/1922
(101) 52.20 ft on 01/26/1898
(102) 52.20 ft on 04/26/1862
(103) 52.00 ft on 01/06/1919
(104) 52.00 ft on 03/26/1952
(105) 51.94 ft on 03/20/2008
(106) 51.80 ft on 05/06/1983
(107) 51.80 ft on 03/07/1910
(108) 51.80 ft on 01/29/1876
(109) 51.60 ft on 03/08/1993
(110) 50.97 ft on 03/17/2010
(111) 50.90 ft on 04/08/1977
(112) 50.90 ft on 03/05/1902
(113) 50.80 ft on 02/16/1881
(114) 50.69 ft on 02/26/2003
(115) 50.60 ft on 05/23/1995
(116) 50.40 ft on 02/07/1932
(117) 50.40 ft on 04/02/1906
(118) 50.40 ft on 12/31/1942
(119) 50.30 ft on 04/05/1970
(120) 50.04 ft on 03/24/1975
(121) 49.70 ft on 02/02/1986
(122) 49.40 ft on 04/20/1861
(123) 49.30 ft on 04/11/1987
(124) 49.25 ft on 05/01/1973
(125) 49.10 ft on 04/17/1860
(126) 49.10 ft on 02/03/1911
(127) 49.00 ft on 01/19/1951
(128) 48.86 ft on 02/21/1976
(129) 48.80 ft on 04/02/1869
(130) 48.60 ft on 04/16/1944
(131) 48.40 ft on 01/14/1895
(132) 48.30 ft on 03/13/1905
(133) 48.15 ft on 03/20/1982
(134) 47.90 ft on 01/11/1874
(135) 47.70 ft on 04/04/1896
(136) 47.68 ft on 02/23/1971
(137) 47.60 ft on 02/05/1923
(138) 47.50 ft on 05/05/2010
(139) 47.40 ft on 04/25/1984
(140) 47.33 ft on 06/10/1981
(141) 47.30 ft on 03/05/2007
(142) 47.30 ft on 01/12/1946
(143) 47.20 ft on 03/29/1965
(144) 47.20 ft on 04/04/1914
(145) 46.90 ft on 01/18/2007
(146) 46.80 ft on 07/02/1998
(147) 46.60 ft on 03/09/1934
(148) 46.30 ft on 01/25/1926
(149) 46.00 ft on 01/20/1885
(150) 45.90 ft on 03/09/1904
(151) 45.80 ft on 04/08/1960
(152) 45.10 ft on 12/23/1864
(153) 44.80 ft on 02/06/1988
(154) 44.50 ft on 05/25/2001
(155) 44.40 ft on 12/18/1873
(156) 44.20 ft on 04/13/1938
(157) 44.10 ft on 04/08/1931
(158) 43.88 ft on 03/22/1980
(159) 43.80 ft on 07/02/1928
(160) 43.80 ft on 04/25/1892
(161) 43.70 ft on 06/16/1858
(162) 42.80 ft on 03/22/1992
(163) 42.80 ft on 03/12/1863
(164) 42.30 ft on 12/27/1879
(165) 42.30 ft on 02/18/1925
(166) 41.80 ft on 04/13/1972
(167) 41.64 ft on 12/05/2010
(168) 41.60 ft on 10/22/2006
(169) 41.50 ft on 03/09/1999
(170) 41.20 ft on 09/26/1866
(171) 41.20 ft on 12/15/1878
(172) 41.00 ft on 01/24/1947
(173) 41.00 ft on 01/15/1930
(174) 40.70 ft on 02/04/1969
(175) 40.50 ft on 05/13/1871
(176) 40.20 ft on 03/30/1868
(177) 40.00 ft on 12/01/1900
(178) 39.90 ft on 04/01/1888
(179) 38.50 ft on 10/21/1954
(180) 38.30 ft on 02/22/1889
(181) 36.30 ft on 03/07/1953
(182) 35.60 ft on 02/15/1894
(183) 35.50 ft on 06/09/1941

(P): Preliminary values subject to further review.