A newly replaced culvert on a U.S. Forest Service road near Coffman Cove. It’s one of about a dozen Trout Unlimited will replace on Prince of Wales Island over the next few years. (Hunter Morrison/KRBD) Miles down a gravel U.S. Forest Service road on the eastern side of Prince of Wales Island, a small stream trickled down from a dense, moss laden forest. Sophie Weaver trekked down to the streambank, marked by colorful wayfinders, and pointed to …