An article in the Laconia Sun about water levels also mentions pollution issues.
They have a picture of the lake level sign under the Weirs bridge. I have been told by someone at the state that the sign is off by a couple of inches. Maybe one of these years they can put a new clean sign there and be sure it is at the correct level. The sign that has been there for many years looks a little rough.
https://www.laconiadailysun.com/news...080d2e1b2.html