Agree on the need for drinking water, but I don't believe dams are the answer.I actually think there's going to be a lot of dams built in our future. For those regions with a Mediterranean climate (no rain all summer) and no glacial storage or extensive aquifers, there will have to be a way to store water for people to drink. Can you reduce Ag in these areas? Sure. But there will come a point when reduction can only go so far, when drought diminishes stream flows down to the point where we're either protecting fish or people, or maybe neither. A lot of people don't think of western OR or WA are dry areas, but they can be. All of the large metropolitan areas of both states rely on large reservoir storage for drinking water.
The key will be improving dam siting and designs to minimize maintenance and environmental impacts.
But none of that means this dam fits that mold.
Minimal maintenance and minimal environment impacts don't exist when it comes to damming rivers in my experience.
Like choosing between chopping off your right hand or left hand, neither is a desirable outcome.
I think you also touched on this, but I don't see the population of Baggs WY ever reaching a point where a reservoir is needed for drinking water. Plus, they have High Savery already dammed.