On Thursday we went to the fish ladder at the locks in Seattle. This is the flood gate (from above), it allows the water from Lake Washington and Lake Union to drain into the sound. The locks are on the boating channel that links the lakes to the sound. The lakes are 6-26' higher than the level of the sound. The locks raise and lower the boats so they can move along the waterway. We got to see a boat go through the locks.
It is a brand new boat that was just unloaded off a freighter from China and being taken up to one of the lakes for outfitting and delivery.
There was a smashed penny machine at the fish ladder so we added two more to our collection.
Look closely- you'll see a fish in the viewing area of the fish ladder.