"Celilo Falls (Wyam, meaning "echo of falling water" or "sound of water upon the rocks," in several native languages) was a tribal fishing area on the ..." wikipedia.org
"The site was once a major cultural and trading center, until Celilo Falls was inundated by The Dalles Dam in 1957. The 2000 census reported a total ..." wikipedia.org
"The park isn't far from the famous Celilo Falls, which were, before being inundated by the waters behind The Dalles Dam, the most prolific salmon ..." frommers.com