From Photos

Bonneville: Lock, Dam, Fish Ladder, Hatchery

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A tugboat and barge approach the lock as the bridge swings open.
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The barge is fully in the lock and the water rises.
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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.
20110816-152224.jpgAlso on premises is a fish hatchery where many local species of fish are raised and then released into the river.