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skprbob · 07-30-2009, 11:14 AM

TomC is right. The tannic acid is leached out of pines mostly, and shows up in areas where the water circulation is less - areas such as upper Moultonborough Bay, lower Alton Bay, etc. In fact, the vast majority of smaller lakes and ponds in NH are "brown" for that reason. The "green" lakes are Winnipesaukee, Winnisquam, Squam, Newfound, and Sunapee. No surprise that they are the five largest.

07-30-2009, 11:14 AM	#9
skprbob Senior Member Join Date: Sep 2006 Location: 19 Mile Bay Posts: 147 Thanks: 0 Thanked 90 Times in 29 Posts	brown water TomC is right. The tannic acid is leached out of pines mostly, and shows up in areas where the water circulation is less - areas such as upper Moultonborough Bay, lower Alton Bay, etc. In fact, the vast majority of smaller lakes and ponds in NH are "brown" for that reason. The "green" lakes are Winnipesaukee, Winnisquam, Squam, Newfound, and Sunapee. No surprise that they are the five largest.