Celilo Falls is the most culturally and structurally complicated of the Confluence sites. For at least 12,000 years, Celilo was a sacred fishing ground where regional tribes caught giant Chinook salmon migrating upstream to spawn. It is estimated that during its peak flood season, the water flowing over the falls was ten times greater than Niagara. And where once there were over 4.5 million migrating salmon, today there are fewer than 100,000. In 1957, the Dalles Dam pool inundated this section of the Columbia ending a rich tribal food source along with thousands of years of ritual celebrations. Here, Lin plans to oversee the construction of a curving cantilevered bridge or pier that extends out over the river close to where the falls once raged.