Historic Crests
(1) 1,530.50 ft on 06/26/2011
(2) 1,527.39 ft on 04/21/1976
(3) 1,526.52 ft on 05/11/1979
(4) 1,525.72 ft on 04/12/2013
(5) 1,525.69 ft on 04/14/2009
(6) 1,524.92 ft on 05/15/1975
(7) 1,524.72 ft on 04/29/1969
(8) 1,524.27 ft on 04/10/1996
(9) 1,523.12 ft on 04/18/1999
(10) 1,521.07 ft on 06/30/2005
(11) 1,520.82 ft on 03/29/1997

(P): Preliminary values subject to further review.