A tugboat and barge approach the lock as the bridge swings open.

The barge is fully in the lock and the water rises.

On the other side of the dam, a fish ladder allows fish to move up and downstream around the dam. Sitting in the room is a man in front of a computer who counts the types of fish all day long. Here some Chinook swim past the counting station.
Also on premises is a fish hatchery where many local species of fish are raised and then released into the river.