The four Lower Snake River Dams are man-made structures with a finite lifetime. They are part of the problematic aging U.S. infrastructure that requires more money for maintenance every year. These dams will be breached in the future due to economics. They are economically unsustainable now. It’s simply a matter of time before the federal agencies admit it. So, the question is will salmon and Southern Resident Orcas still be around when the dams come down, or will it be too late? Extinction is forever. The dams are not.