Historic Crests
(1) 877.68 ft on 09/25/1995
(2) 875.53 ft on 09/10/1997
(3) 874.99 ft on 09/12/2013
(4) 874.51 ft on 09/27/2012
(5) 871.23 ft on 10/01/2013
(6) 871.02 ft on 09/21/2019 (P)
(7) 870.72 ft on 08/29/2016
(8) 869.70 ft on 09/14/2010
(9) 869.50 ft on 10/10/2020 (P)
(10) 869.12 ft on 10/03/2010
(11) 868.30 ft on 10/01/2014
(12) 868.10 ft on 09/02/2009
(13) 867.94 ft on 10/01/2016
(14) 867.14 ft on 10/01/2002
(15) 865.61 ft on 10/09/2017 (P)
(16) 865.50 ft on 09/14/2021 (P)
(17) 865.07 ft on 09/26/2007
(18) 864.96 ft on 10/01/2007
(19) 863.55 ft on 10/01/2005
(20) 860.85 ft on 09/25/2018 (P)

(P): Preliminary values subject to further review.