In this thread you state the same info.
http://www.winnipesaukee.com/forums/...d.php?p=142795
Here is Bizers response which I totally agree with.
While possible, that seems unlikely. It may have raised the level of Paugus Bay by 18 feet, but not the entire lake. The Weirs channel (which extends from Weirs Beach to Naswa) is about four feet deep. Hence, the main part of the lake could only drop by four feet at most. At that level (and lower) there is no way for water to exit the lake.