Historic Crests
(1) 653.20 ft on 02/26/1985
(2) 651.90 ft on 12/01/2011
(3) 651.89 ft on 03/15/1982
(4) 651.50 ft on 03/13/2009
(5) 651.17 ft on 07/01/2015
(6) 651.00 ft on 01/06/1993
(7) 650.50 ft on 01/27/1999
(8) 650.30 ft on 02/21/1998
(9) 650.00 ft on 02/13/2001
(10) 648.80 ft on 03/08/2011
(11) 648.60 ft on 01/15/2020
(12) 648.40 ft on 01/12/2008
(13) 648.40 ft on 06/05/1997
(14) 648.15 ft on 02/14/2009
(15) 646.30 ft on 05/13/1996
(16) 646.10 ft on 06/25/2006
(17) 644.30 ft on 07/17/1992
(18) 644.29 ft on 03/20/2003

(P): Preliminary values subject to further review.