Since the launch of the Klamath River Science and Monitoring Program in July 2024, exciting progress has been made in tracking fish migration following the removal of the Klamath River dams. Led by CalTrout and a coalition of tribal, state, federal, academic, and nonprofit partners, the program has documented over 6,000 Chinook salmon passing through the former Iron Gate Dam site between October 17 and 29, 2024. Using a SONAR camera installed at the site, scientists captured continuous video-like imagery of the fish. Analysis revealed that 98% of these migrating fish were over 20 inches long, with an estimated 221 to 588 fish passing through daily during this period. The SONAR provided the first evidence of salmon reclaiming newly reopened habitats just days after dam removal construction was completed.

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