Historic Crests
(1) 872.16 ft on 06/01/2016
(2) 871.15 ft on 10/31/1974
(3) 870.75 ft on 06/27/2007
(4) 870.58 ft on 05/27/2015
(5) 870.40 ft on 03/20/1968
(6) 869.91 ft on 01/25/2012

(P): Preliminary values subject to further review.