Water level
On the New Hampshire Department of Environmental Services site there is a rather complete description of how the Lake level is managed. From reading it over, it is clearly a complex matrix involving season of year, weather patterns, surface conditions, and many more. As has been said before, the "operator is dammed one way or another". Some of us grew up thinking "only the Shadow knows", but the real answer to the dam question is, "It is not nice to fool with Mother Nature".
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