There is trout almost 24/365 in that river downstream of the falls. The only problem is that it's next to impossible to catch it since the current is very strong.
You could also try right above the Canadian Fall where the river makes a bend. There is a nice hole there, and calm water.
On the other hand, forget about Niagara river and go to Simcoe. That lake is packed with fish.
I just got a nice 8lb pike there last Sunday.
Originally posted by bart320i
I don't think there is a rainbows in the niagra river now, you can try but i don't see anyone catching anything in there now unless there is pike or bass in that river