The Big Hole River flows 153 miles from its source 14 miles south of Jackson, Montana to the confluence with the Beaverhead River at Twin Bridges, Montana. The Big Hole contributes about 70% of the initial flow to the Jefferson River. From Jackson to Wisdom, Montana (river mile 111) the river is small and not suitable for kayaks. Downstream from Wisdom, the river gains size and can be floated all the way to Twin Bridges (river mile 0). The Big Hole is famous as the last strong hold of fluvial Arctic Grayling in the lower 48 states, but the big draw of the Big Hole are its prodigious populations of brown trout. The river also hold good populations of rainbow trout and Rocky Mountain whitefish. The Montana Fish, Wildlife and Parks maintain 12 Fishing Access Sites along the river from Fishtrap (river mile 81) to Pennington Bridge (river mile 9). Other access points suitable for kayaks occur at several bridge crossings. Lodging, food and supplies are limited in the upper sections although Wise River, Divide, Melrose and Twin Bridges have fly shops. From Glen, upstream to Fishtrap FAS the river is paralleled by Interstate-15 and state highways. Downstream from Glen, access is via Burma Road, a seasonal gravel road that can be impassible in wet weather or winter. As the Big Hole is a Class I river for stream access purposes, camping below the high water mark and at least 500 yards from occupied dwellings is allowed. The section from Glen (river mile 25) to the Jefferson River is extensively braided Cottonwood bottom land with ample gravel and sand bars suitable for overnight camping. Floaters going downstream from Pennington Bridge FAS have to float to the Hells Canyon FAS (~15 river miles) on the Jefferson River to take out.
More information on the Big Hole River Fishing Access sites can be found at: http://fwp.mt.gov/fishing/guide/waterbodyDetail.html?llid=1123386455678