Historic Crests
(1) 1,422.10 ft on 06/04/1991
(2) 1,421.90 ft on 04/22/1971
(3) 1,421.80 ft on 06/22/2011
(4) 1,421.80 ft on 01/01/1999
(5) 1,421.60 ft on 01/01/1979
(6) 1,421.50 ft on 08/15/2012
(7) 1,421.50 ft on 02/04/2019
(8) 1,421.50 ft on 01/01/1980
(9) 1,421.50 ft on 01/01/1982
(10) 1,421.50 ft on 01/01/1983
(11) 1,421.50 ft on 01/01/1984
(12) 1,421.50 ft on 01/01/1986
(13) 1,421.50 ft on 01/01/2004
(14) 1,421.40 ft on 05/15/2015
(15) 1,421.40 ft on 08/15/2013
(16) 1,421.40 ft on 01/01/1998
(17) 1,421.40 ft on 01/01/1977
(18) 1,421.40 ft on 01/01/1981
(19) 1,421.40 ft on 01/01/1987
(20) 1,421.40 ft on 01/01/1989
(21) 1,421.40 ft on 01/01/2010
(22) 1,421.30 ft on 07/15/2017
(23) 1,421.30 ft on 01/01/2007
(24) 1,421.30 ft on 01/01/2006
(25) 1,421.30 ft on 01/01/2005
(26) 1,421.30 ft on 01/01/2003
(27) 1,421.30 ft on 01/01/2001
(28) 1,421.30 ft on 11/13/1988
(29) 1,421.30 ft on 01/01/1985
(30) 1,421.30 ft on 01/01/1978
(31) 1,421.30 ft on 01/01/1997
(32) 1,421.30 ft on 08/15/2016
(33) 1,421.30 ft on 08/15/2018
(34) 1,421.20 ft on 09/15/2014
(35) 1,421.20 ft on 01/01/1972
(36) 1,421.20 ft on 01/01/1974
(37) 1,421.20 ft on 01/01/1976
(38) 1,421.20 ft on 01/01/2000
(39) 1,421.20 ft on 01/01/2002
(40) 1,421.10 ft on 01/01/1973
(41) 1,421.10 ft on 01/01/1975
(42) 1,421.10 ft on 01/01/2008
(43) 1,421.10 ft on 01/01/2009
(44) 1,421.09 ft on 01/31/1994
(45) 1,421.07 ft on 04/01/1990
(46) 1,421.06 ft on 02/25/1996
(47) 1,420.90 ft on 05/09/1995
(48) 1,420.89 ft on 06/20/1993
(49) 1,420.80 ft on 01/01/1970
(50) 1,420.80 ft on 01/01/1969
(51) 1,420.60 ft on 01/01/1968
(52) 1,420.20 ft on 09/17/1967

(P): Preliminary values subject to further review.