[kesselvon]

The idea that the Great Lakes are going to be tapped to solve water problems outside the watershed is fall flat when they realize those Great Lakes states aren't going to sell off access like that.

I remember some moonshot proposal to pipe the water to the Southwest, which is wild.

[Scoundreller]

There might be redirecting (or excessive drawing) of tributaries though.

[Kon-Peki]

It's surprising, actually, how small the Great Lakes watershed is, compared to the surface area of the lakes. You really aren't going to get much of anything from tributaries; if you want some of the water you draw it from the lakes.