New York State Banner
D E C banner
D E C banner

Grafton Lake/Dyken Pond Air Monitoring Site Trends (1987-2006)

Grafton Lakes (Dyken Pond) Acid Deposition Data, 1987 - 2006
Year Precip.
in
pH [SO4]
ippm
[NO3]
ippm
[NH4]
ippm
SO4 Dep.
kg/ha
NO3 Dep.
kg/ha
NH4 Dep.
kg/ha
87
88 44.55 4.23 2.82 1.69 0.24
89 45.45 4.34 1.97 1.51 0.40 22.73 17.45 4.59
90 53.54 4.37 1.80 1.22 0.27 24.53 16.57 3.72
91 40.86 4.28 2.27 1.46 0.37 23.56 15.13 3.82
92 30.66 4.31 2.12 1.58 0.35 16.51 12.28 2.70
93 35.24 4.33 2.07 1.44 0.37 18.53 12.85 3.33
94 36.98 4.41 2.12 1.31 0.44 19.93 12.32 4.12
95 37.10 4.45 1.54 1.38 0.40 14.50 12.97 3.73
96 49.07 4.50 1.29 1.11 0.31 16.12 13.82 3.88
97 31.22 4.38 1.54 1.31 0.37 12.21 10.35 2.90
98 28.62 4.42 1.77 1.45 0.44 12.84 10.54 3.16
99 48.52 4.53 1.13 1.07 0.22 13.98 13.15 2.70
00 49.96 4.42 1.44 1.40 0.30 18.24 17.70 3.80
01 31.95 4.40 1.31 1.53 0.28 10.65 12.39 2.23
02 51.51 4.54 1.31 1.27 0.23 17.18 16.61 3.06
03 48.99 4.62 1.02 1.17 0.54 12.30 14.14 6.76
04 46.42 4.62 1.35 1.25 0.37 15.97 15.22 4.33
05 55.99 4.77 0.83 1.20 0.42 11.25 16.07 5.29
06 49.54 4.75 1.03 0.76 0.21 13.10 9.74 2.74

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.