No
1916 happened In a lake with a great white
1916
Yes
Yes. A number of the shark attacks in the Jersey shore shark attacks in 1916 were in rivers.Those attacks were used as the basis for Peter Benchley'sbook and the movie Jaws.(see related link)
No
Yes
yes
yes.
yes i beleive there has been activity of sharks in rend lake
No. Most sharks stay only in salt water, and lakes are fresh water. A few swim some distance into rivers, so for a shark to ever end up in a lake, the lake has to be connected to a river that runs out into the sea, and fairly close to the coast too.
There have been no reports of shark sitings in Lake Ontario, even the bull shark hasn't been there. I wouldn't worry too much though as sharks tend to like warm water and Lake Ontario seems a little to far north for that to be an issue.
Yes.