Salmon Beyond Borders
April 3rd, 2025
By Mary Catharine Martin
Salmon Beyond Borders calls for ban on mine waste dams along transboundary rivers
JUNEAU, ALASKA—A disturbing report recently released by Canadian conservationists has revealed that Canada’s massive Red Chris copper-gold mine, located in Tahltan Territory in northern British Columbia (B.C.), Canada, is contaminating groundwater, creeks, and lakes in the upper reaches of the Iskut River, the largest tributary of the transboundary Stikine River. The Stikine, North America’s fastest free-flowing navigable river, flows into the United States at the community of Wrangell, Alaska. It is a critical salmon producer for both countries, serves as key habitat for a wide array of wildlife, and has been both home and a trade route for Indigenous peoples for thousands of years.
The report details an investigation conducted by Terrace, B.C.-based organization SkeenaWild Conservation Trust, mostly using data that is not readily available and was obtained through Freedom of Information Act requests. Report findings include that critical fish habitat near the mine has been destroyed and the seepage of contaminants like selenium and copper from the Red Chris Mine’s waste facility and waste rock piles is higher than predicted and could negatively impact aquatic life. The levels of selenium detected in fish tissue in nearby lakes are increasing and could be harmful to the fish and to the humans eating them. At elevated levels, selenium can cause mutations and death in fish and other animals. The impacted water bodies are an important source of food, clean water, and ways of life for residents of Iskut and the surrounding communities in Tahltan Territory, Northwestern B.C.
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