We are in a closed loop. No more water in or out. If some of the rivers are not getting the rainfall, there are only four places for the water to be, underground aquifers, making up clouds/moisture in the air, in oceans (or seas or other rivers), or locked up as ice. No other places for it to be. Well, okay, it could be in cans and bottles and kegs and casks, too, I guess.
You clearly aren’t from Ontario.
Lots of water in lakes. Far more than in rivers and streams. An insane amount of the province’s land is filled by water. I am certain that at any given moment there is far more water in the lakes in Ontario than in the clouds or in the beer store.