
The Missouri River Headwaters serves as the geographic anchor of this 1992 study, where the Jefferson, Madison, and Gallatin rivers converge to form the Missouri. This region is a complex intersection of mountain ranges and valley floors, including the Gallatin Valley and the towering Bridger Range to the northeast. To the west, the Tobacco Root Mountains contain a legacy of resource extraction, evidenced by labels like the Garnet Gold Mine and Strawberry Mine.
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