No.
(I'm only assuming No)
There is no record of it previously listed on the internet that can be easily found. I'm from the south and I do not know much about the local east coast. But like I said Google it. I can't find anything can you? Especially in a time like this, you would think that information like this would be easily available. Kind of scary, like "2012" kind of scary. I'm going to start my bucket list just to be safe. ;)
No
it got flooded by a tusnami and 100000000000000 people died
Yes
yes it has
Yes.
No
yes in 1965
I believe it is safe to say most rivers have flooded at one time or another.
No, Saint LAwrence has never flooded. If Quebec went independent then Qubec would flood.
the river thames flooded on 7th january 1928
Yes
Rarely if ever do they get flooded.