Attached is a link to the State monitoring station next to the Bridge over Winnisquam. The description at the bottom explains why the flow is maintained at the level it is.
http://www4.des.state.nh.us/rti_home...innisquam+Lake
what I'm about to say it TOTAL speculation on my part: up until Labor day Winnisquam had stayed about its "mean level", I believe this was to maintain the flow through the Hydro dam, but since then the lake level has been dropping and that may be to help the Big lake. So Winnipesaukee should rise when (if) they do the draw down after Columbus day. The big question is what happens after that if we do not get significant rain.