Historic Crests
(1) 23.05 ft on 11/19/1957
(2) 22.98 ft on 03/02/1998
(3) 22.24 ft on 03/02/1997
(4) 21.50 ft on 12/01/2001
(5) 20.96 ft on 05/04/2011
(6) 20.14 ft on 05/18/2008
(7) 19.95 ft on 04/05/2008
(8) 19.67 ft on 05/02/2010
(9) 19.50 ft on 05/05/2003
(10) 19.47 ft on 04/28/2014
(11) 19.39 ft on 07/31/1996
(12) 19.36 ft on 12/15/2007
(13) 19.32 ft on 05/01/2009
(14) 19.02 ft on 09/23/2006
(15) 18.76 ft on 03/28/2005
(16) 18.29 ft on 04/09/1993
(17) 18.19 ft on 08/05/1995
(18) 18.10 ft on 03/27/1994
(19) 17.86 ft on 12/23/2017
(20) 16.58 ft on 03/19/1992
(21) 16.38 ft on 12/16/2000

(P): Preliminary values subject to further review.