Historic Crests
(1) 1,210.60 ft on 04/01/1960
(2) 1,209.70 ft on 06/01/2010
(3) 1,209.23 ft on 05/30/1995
(4) 1,209.20 ft on 02/01/2007
(5) 1,209.20 ft on 03/01/1978
(6) 1,209.20 ft on 10/01/1979
(7) 1,209.10 ft on 12/01/1975
(8) 1,209.00 ft on 11/01/2001
(9) 1,209.00 ft on 11/01/1982
(10) 1,208.90 ft on 11/01/1983
(11) 1,208.90 ft on 10/01/1991
(12) 1,208.90 ft on 01/01/1980
(13) 1,208.80 ft on 09/01/1986
(14) 1,208.80 ft on 01/01/1987
(15) 1,208.80 ft on 10/01/1977
(16) 1,208.80 ft on 12/01/1976
(17) 1,208.80 ft on 01/01/1974
(18) 1,208.80 ft on 09/01/1968
(19) 1,208.80 ft on 01/01/1981
(20) 1,208.70 ft on 10/01/1973
(21) 1,208.70 ft on 01/01/1972
(22) 1,208.70 ft on 10/01/1971
(23) 1,208.70 ft on 09/01/1985
(24) 1,208.70 ft on 11/01/1984
(25) 1,208.60 ft on 02/01/2011
(26) 1,208.60 ft on 09/01/2004
(27) 1,208.50 ft on 01/01/2002
(28) 1,208.50 ft on 10/01/2009
(29) 1,208.50 ft on 12/01/1988
(30) 1,208.50 ft on 06/01/2008
(31) 1,208.50 ft on 12/01/2005
(32) 1,208.40 ft on 10/01/1990
(33) 1,208.40 ft on 12/01/1970
(34) 1,208.30 ft on 10/01/1969
(35) 1,208.20 ft on 10/01/2006
(36) 1,208.10 ft on 11/01/1992
(37) 1,208.05 ft on 05/29/1996
(38) 1,208.05 ft on 01/07/1989
(39) 1,208.00 ft on 11/01/2003
(40) 1,207.54 ft on 10/31/1997
(41) 1,207.32 ft on 11/30/1998
(42) 1,207.25 ft on 12/31/1999
(43) 1,207.25 ft on 06/10/2014
(44) 1,207.16 ft on 01/31/1994
(45) 1,206.76 ft on 07/15/1993

(P): Preliminary values subject to further review.