Put simply, the river guide and conservationist has spent a lot of time scrubbing rocks and collecting bugs in small sections of the Big Hole River. The undammed Big Hole River is one of Montana’s precious gems, known for its renowned fishing and breathtaking beauty. “They take active work to preserve.”Wheeler is Save Wild Trout’s program director, an organization that merged with the Big Hole River Foundation earlier this year. The research has already netted a 178-page report on macroinvertebrates in the Big Hole River, covering 2019 to 2022, authored by Brett Marshall with River Continuum Concepts. Recently, a tagging effort by FWP apparently killed some fish in the Big Hole River.