One year after dam removal on the Klamath River, advanced sonar, artificial intelligence, and tagging data show thousands of Chinook salmon returning to habitat closed for more than a century.

Oregon State Police Fish and Wildlife troopers have issued a criminal citation for the unlawful taking of Chinook salmon in the Klamath Basin, marking the first such case since the removal of dams on the Klamath River and the historic return of salmon to local waterways.

Oregon officials say they recognize the urgent push for fish screens as salmon return to the Upper Klamath Basin — but warn the engineering, cost, and statewide backlog mean fast solutions are unlikely.