Historic Crests
(1) 476.72 ft on 04/19/2013
(2) 475.89 ft on 09/16/2008
(3) 475.84 ft on 05/19/2020
(4) 474.83 ft on 02/22/1997
(5) 474.70 ft on 04/09/1983
(6) 474.26 ft on 02/22/2018
(7) 474.18 ft on 05/02/2019
(8) 473.86 ft on 12/05/1982
(9) 473.20 ft on 02/25/1936
(10) 472.76 ft on 08/25/2007
(11) 472.71 ft on 07/19/1996
(12) 472.33 ft on 12/29/2008
(13) 471.12 ft on 12/30/2015
(14) 470.38 ft on 06/14/2015
(15) 469.00 ft on 05/02/2017

(P): Preliminary values subject to further review.