By Chuck Chiang THE CANADIAN PRESS First Nations groups on the Canadian side of the Columbia River Basin are adamant that salmon runs that have long been blocked by dams in the United States must be restored, potentially in a renewed river treaty between the two countries. But experts say possible solutions, such as “salmon cannons” that suck fish through a pipe and shoot them out upstream and over obstacles, are all costly and potentially limited in their effectiveness. Representatives from the Ktunaxa and Syilx Okanagan nations say they continue to bring up salmon restoration in negotiations for a modern Columbia River Treaty and will not stop until a solution can be reached within or outside a new agreement. The U.S.-Canada treaty regulates the cross-border Columbia River to prevent flooding…
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