Alaska Fisheries Report o6 June 2024 By Terry Haines Published June 6, 2024 at 1:09 PM AKDT Listen • 14:01 Credit: Ken Hill / National Park Service An aerial view of the rust-colored Kutuk River in Gates of the Arctic National Park in Alaska. Thawing permafrost is exposing minerals to weathering, increasing the acidity of the water, which releases metals like iron, zinc and copper.