An alternative to getting salmon to the ocean successfully has been to transport them by trucks.
Dams have large screens that prevent the fish to be drawn into the turbine intakes.
The fish are directed upward into a bypass channel. At some dams, fish are transferred to barges or trucks that transport them past any other dams where they are released to resume their trip to the ocean. This, however, also places stress on the salmon. Because wild salmon were not reproducing enough, hatcheries were also once thought to be a solution. On their trip to the spawning area, adult salmon are led to hatcheries through fish ladders.