Wet enough for you?

I imagine it's pretty unlikely an inch of rain would fall uniformly over all of Lake Superior but if it ever happened, well, that would be pretty wet. The surface area of Lake Superior is 31,700 square miles. That would be a lot of water.

But Lake Superior already is a lot of water: The largest fresh-water lake in the world by surface area and the third largest by volume, it contains 2,900 cubic miles (12,100 km³) of water.