Historic Crests
(1) 1,231.49 ft on 11/01/2019 (P)
(2) 1,230.73 ft on 04/28/2011
(3) 1,230.20 ft on 10/02/1945
(4) 1,229.85 ft on 06/29/2006
(5) 1,229.05 ft on 04/16/2014
(6) 1,228.70 ft on 04/28/1980
(7) 1,228.70 ft on 05/04/1972
(8) 1,228.40 ft on 04/17/1993
(9) 1,228.15 ft on 05/25/2004
(10) 1,228.05 ft on 04/21/2019 (P)
(11) 1,228.02 ft on 07/03/2013
(12) 1,228.00 ft on 12/28/1973
(13) 1,227.90 ft on 05/19/1973
(14) 1,227.90 ft on 03/18/1990
(15) 1,227.90 ft on 04/20/1969
(16) 1,227.90 ft on 04/25/2001
(17) 1,227.80 ft on 04/26/1994
(18) 1,227.60 ft on 04/07/1989
(19) 1,227.50 ft on 04/29/1970
(20) 1,227.49 ft on 04/20/2013
(21) 1,227.40 ft on 12/31/1990
(22) 1,227.30 ft on 12/03/1996
(23) 1,227.23 ft on 06/29/2013
(24) 1,227.22 ft on 04/25/2005
(25) 1,227.20 ft on 10/22/1995
(26) 1,227.20 ft on 04/24/1996
(27) 1,227.18 ft on 04/14/2011
(28) 1,227.13 ft on 04/12/2017
(29) 1,227.06 ft on 04/22/2015 (P)
(30) 1,226.90 ft on 04/24/1992
(31) 1,226.20 ft on 04/08/1988
(32) 1,223.40 ft on 01/22/1995

(P): Preliminary values subject to further review.