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Contributed photo

STEVENSON — The orca, a vital member of the local marine ecosystem, faces its greatest obstacle far from the rocky Pacific Coast: four obsolete dams on the lower Snake River. 

In collaboration with the Stevenson Grange #121’s 2025 Community Resilience Program, the 2019 documentary “Dammed to Extinction” will screen on Oct. 18 in the Library Gallery, followed by a Q&A with writer Steven Hawley and director Michael Peterson.