"Year","WaterLevel"
1981,579.36
1982,579.63
1983,579.86
1984,580.31
1985,581.36
1986,581.56
1987,579.66
1988,578.81
1989,578.02
1990,578.71
1991,578.74
1992,579.2
1993,579.53
1994,579.36
1995,579.95
1996,579.95
1997,579.99
1998,578.61
1999,577.4
2000,576.8
2001,577.59
2002,577.13
2003,577.1
2004,577.69
2005,577.07
2006,577.36
2007,578.38