As the old saying goes, “nature abhors a vacuum”. The Olympic National Park have announced (and reported and commented on by The Peninsula Daily News) that chinook (King) salmon have been spotted above the site of the lower of the two dams that have been removed. This is the first time in almost a century that they have been able to reach this location. In addition to the Kings, Steelhead have also been seen in above the first dam.
The power of restoration again shows that once a place has been restored, nature tries and fill it, if the species still are alive.
The news bulletin from the park
http://www.nps.gov/olym/parknews/return-of-the-kings.htm
Additional information on the story at the PDN.