3.7K views · 106 reactions |  #WorldFishMigrationDay reminds us that free-flowing rivers are lifelines for fish. Few things have such a fundamental impact on river wildlife as a dam. Outdated and obsolete dams block fish from reaching their spawning grounds, raise water temperatures, reduce oxygen, and fragment ecosystems. By removing them, we reopen migration routes, restore fish habitat, and revive river health. | American Rivers | Facebook