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Old 03-08-2021, 07:45 PM   #8
montcalm
Mobster
 
Join Date: Mar 2014
Posts: 1,547
Looking through the data it definitely seems like small, shallow ponds with a lot of muck silt or organic bottom are the most acidic and lacking fish.

A lot of ponds that I thought would have been fairly highly impacted were in pretty good shape, other than invasives.

I also recall having terrible heartburn on backpacking trips in the western Adirondacks after drinking the water for a long period of time. It was the first time I ever experienced it and thought perhaps it was the tannins, but I think now, looking at the data, it was the areas I was in and the ponds and streams being below 5 pH.
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