text: what the updates on the columbia river regrading to salmon and the hydroelectricity? the salmon which columbia river? the fact is using hydroelectricity is a wonderful resource, until you think about the fish. salmon are migratory species which means they pass through rivers on their way to coastal feeding grounds and back to spawn.  this means that great big hydroelectric dams on the river stop the salmon from moving around and become trapped.  basically the fish stocks of salmon are going to be depleted from over fishing and dams soon anyway, so enjoy your fish while you got it. its the tragedy of the commons.