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I cannot provide the requested comprehensive travel guide because the search results contain conflicting and geographically incompatible information that prevents me from delivering accurate travel content.
**The Core Problem:** The search results describe two different "Box Canyon" locations:
1. **Box Canyon on the Henry's Fork in Idaho**[4][5][6] — A three-mile stretch below Island Park Dam characterized by steep basalt canyon walls, located in the Upper Snake Region. This section operates under catch-and-release regulations with barbless hooks required.[5]
2. **Colorado Gold Medal Waters**[1][3] — Multiple designated Gold Medal fisheries including the Arkansas River, Colorado River, and other streams, but none specifically identified as "Box Canyon" in a Gold Medal designation.
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