When the first dams went up in the 1930s, they cut off access to vast areas of salmon spawning habitat. They also created barriers for migrating fish and fundamentally changed how the rivers operate — also having a huge impact on the Native tribes that lived along them. Read more: https://www.kgw.com/article/tech/science/environment/tribal-leaders-react-report-detailing-damage-columbia-river-dams/283-1d47dd02-99ec-4edb-b0cf-e4e45aa12901 Watch more The Story videos: http://bit.ly/watchTheStory Follow The Story on Twitter: https://twitter.com/TheStoryKGW Follow The Story on Instagram: https://instagram.com/thestorykgw