Historic Crests
(1) 31.60 ft on 03/31/1883
(2) 31.10 ft on 01/01/1887
(3) 30.40 ft on 03/14/1910
(4) 27.90 ft on 04/06/1952
(5) 27.70 ft on 04/08/1897
(6) 27.60 ft on 04/08/1917
(7) 27.40 ft on 01/01/1884
(8) 25.20 ft on 04/14/1899
(9) 22.60 ft on 04/07/1913
(10) 22.50 ft on 03/29/1920
(11) 22.20 ft on 03/28/1939
(12) 22.20 ft on 01/01/1894
(13) 21.86 ft on 04/03/1943
(14) 21.80 ft on 03/29/1947
(15) 21.60 ft on 01/01/1883
(16) 21.20 ft on 04/06/1912
(17) 20.90 ft on 01/01/1888
(18) 19.60 ft on 03/19/1938
(19) 19.60 ft on 04/05/1919
(20) 19.30 ft on 03/20/1916
(21) 19.30 ft on 01/01/1896
(22) 19.25 ft on 07/01/2011
(23) 19.20 ft on 01/01/1893
(24) 18.72 ft on 04/17/1950
(25) 18.70 ft on 07/06/1892
(26) 18.60 ft on 03/22/1926
(27) 18.20 ft on 04/07/1904
(28) 17.90 ft on 01/01/1885
(29) 17.80 ft on 03/24/1928
(30) 17.60 ft on 03/23/1918
(31) 17.00 ft on 03/29/1925
(32) 16.90 ft on 04/07/1944
(33) 16.90 ft on 04/02/1906
(34) 16.80 ft on 04/03/1900
(35) 16.60 ft on 04/02/1930
(36) 16.50 ft on 03/20/1936
(37) 16.40 ft on 04/06/1903
(38) 16.30 ft on 01/01/1891
(39) 16.21 ft on 04/06/1949
(40) 16.11 ft on 03/24/2009
(41) 16.00 ft on 04/05/1951
(42) 14.80 ft on 01/13/1983
(43) 14.58 ft on 12/18/1980
(44) 14.44 ft on 01/01/1989
(45) 14.24 ft on 07/13/1975
(46) 13.66 ft on 03/25/1997
(47) 12.37 ft on 04/19/1979
(48) 12.08 ft on 01/23/2012
(49) 10.72 ft on 01/12/2010

(P): Preliminary values subject to further review.