Big Hole River Professional Review and Guide
"Upper reaches hold brookies and among the last fluvial grayling in the continental United States. Lower waters, great browns. With 150 miles of outstanding free-flowing trout water, and much more in its tributaries, the Big Hole River provides angling diversity not found on any other river in the West. Broad statement? Well, here are the facts. Not only do you encounter rainbows and browns, some of them trophy sized, but also brook trout, a smattering of cutthroat, and one of the few populations of fluvial grayling in the United States.
Whitefish are also abundant. Flowing in a broad arc north around the Pioneer Mountains, the river winds its way through a wide, flat valley of gravel runs and gentle pools, before picking up volume and velocity with the added waters of the Wise River. The upper reaches see relatively little fishing pressure, while the center stretch gets hammered pretty hard. Still, there’s nowhere near the pressure on this river that’s found, for instance, on the Yellowstone or Madison or the Snake across the mountains. Species: Brown, rainbow, cutthroat, brook, grayling. Angling methods: spin, and fly-fishing."