2.3 inches of rain fall is a big rain, and that's what the weather page here says has fallen today, Saturday October 17, so will be interesting to see how much the lake level rises in the next day or two, or three.
Probably, the land that surrounds the lake is very dry and will absorb a lot of rainfall before it sheds or drains down hill into the big lake.
2.3-inches of rain recorded at Laconia Airport on Oct 17, 2020; so when was the previous day which had a larger amount? How long ago was that?
THE ANSWER: To find an amount greater than 2.3-inches of rain, you have to go all the way back to August 6, 1974 ...... about 46-years ago ...... ha-ha-ha ..... just kidding here ...... have no clue ..... anybody know for real? .....