Its not the electricity or the people in the flood plain that will be the sticking point. There are other options for electricity and places to live. It is the water. In eastern washington there is no other water. The dams are hold back irrigation resiviors. Historically speaking, the columbia river flowed through a desert. Without the water it would be a desert again. I think the economic impact on allowing eastern washington to return to its natural desert state would be more than the majority of WA residents are willing to endure, salmon or no. If you can irrigate without dams, then there is hope for eventual removal of those dams.