This case was covered last week by the news outlet TBnewswatch, and I'd like to read a quick quote from that article. It says:
The evacuation efforts are necessary because federal officials forced the community to relocate to a flood plain in 1957—and until a federal commitment to help the community move permanently to higher ground becomes a reality.
1957 was a long time ago. How much longer do you suppose the community of Kashechewan will have to wait until there is a permanent solution in place so they don't have to evacuate every year?