[SE Mom]

LOL! I know- usually we think of lakes as fresh water...but Lake Pontchartrain is salt water...here's an interesting link:
http://www.oldion.com/articles/Lake_Pontchartrain

[Condor51]

Oops I didn't see this response before I responded below.

But the interesting is, that this link is a direct quote from Wikipedia. There must be a more reliable source on the net.

So now you did it, I'm on a mission! :-)