WISE RIVER, Mont. — Since the Fellin family founded the Big Hole Lodge in the 1980s to take people fly fishing on the Big Hole River, they have seen significant changes to the cobble-and-boulder-studded freestone trout stream.
For as long as anyone can remember, this river originating high in the Beaverhead mountain range had always been clogged with ice and deep snow every winter, preventing the start of fishing season until June. Now the…