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Niagara Falls Air Monitoring Site Trends (1987-2007)

Niagara Falls Acid Deposition Data, 1987 - 2007
Station Year Precip.
in
pH [SO4]
ippm
[NO3]
ippm
[NH4]
ippm
SO4 Dep.
kg/ha
NO3 Dep.
kg/ha
NH4 Dep.
kg/ha
Niagara Falls 1987 27.68 4.18 4.31 2.52 0.13 30.34 17.71
Niagara Falls 1988 27.70 4.37 4.09 2.10 0.47 28.79 14.77 3.33
Niagara Falls 1989 31.27 4.15 3.52 2.43 0.89 27.99 19.30 7.09
Niagara Falls 1990 35.62 4.07 3.65 2.13 0.59 33.02 19.31 5.36
Niagara Falls 1991 25.14 4.11 3.98 2.51 0.70 25.43 16.01 4.48
Niagara Falls 1992 32.87 4.12 3.49 2.20 0.52 29.14 18.39 4.31
Niagara Falls 1993 30.35 4.16 3.67 2.25 0.54 28.32 17.35 4.19
Niagara Falls 1994 26.76 4.18 4.12 2.42 0.54 28.00 16.48 3.66
Niagara Falls 1995 26.88 4.30 2.89 2.07 0.69 19.71 14.12 4.71
Niagara Falls 1996 25.48 4.34 3.12 1.71 0.69
Niagara Falls 1997 26.58 4.47 3.11 2.31 0.85
Niagara Falls 1998 26.01 4.66 4.96 3.07 0.67
Niagara Falls 1999 28.43 4.41 3.47 2.44 0.53 25.04 17.59 3.85
Niagara Falls 2000 32.12 4.34 3.32 2.63 0.60 27.12 21.44 4.89
Niagara Falls 2001 24.13 4.59 3.99 2.98 0.62 24.43 18.24 3.83
Niagara Falls 2002 30.85 4.84 2.96 2.70 0.68 23.94 21.47 5.49
Niagara Falls 2003 26.88 4.54 2.57 2.32 0.53 17.51 15.81 3.51
Niagara Falls 2004 30.17 4.63 2.57 1.75 0.47 19.55 13.22 3.38
Niagara Falls 2005 29.29 4.70 1.50 1.68 0.44 11.19 12.49 3.29
Niagara Falls 2006 30.94 4.70 2.27 1.77 0.42 17.54 13.96 3.57
Niagara Falls 2007 21.93 4.83 2.09 1.70 0.66 11.93 9.58 3.81

Blanks indicate that the rainfall criteria were not satisfied. That is, analysis of at least 75% of the annual and 50% of the quarterly precipitation.

pH / ion concentration at Niagara Falls, 1987-2007


precipitation / ion deposition at Niagara Falls, 1987-2007