In 1957 the gates of a new dam closed and Celilo Falls, one of the oldest fishing sites in North America, vanished in hours. The episode centers the treaty question the dams raised and mostly ignored: the 1855 Stevens treaties' 'usual and accustomed' fishing right, the 1940 Ceremony of Tears at Kettle Falls, and the legal fiction that the treaties were unbroken.
Whether drowning a fishing place while leaving the paper right intact honors or breaks the 1855 promise is contested, though later litigation largely vindicated the tribes' view that the right survived. The adequacy of the monetary settlements is also questioned.