Trend analysis results for pH and alkalinity, April 1983 – April 2014 | ||||||
All sites | Ponds | Streams | ||||
pH | ANC | pH | ANC | pH | ANC | |
Increased | 45 | 47 | 21 | 27 | 24 | 20 |
Decreased | 4 | 1 | 0 | 0 | 4 | 1 |
No Change | 85 | 86 | 48 | 42 | 37 | 44 |
Total | 134 | 134 | 69 | 69 | 65 | 65 |
SOURCE: Acid Rain Monitoring Project Annual Report, Water Resources Research Center |
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