Fly Fishing Madison River - Between the Lakes

Between the Lakes is exactly what it sounds like: the short reach of the Madison that runs from Hebgen Dam down to where Beaver Creek comes in, just under two miles of river threading the Madison Canyon with US-287 alongside. It drops about 70 feet across that distance at roughly 6,400 feet of elevation, and the whole reach is fast pocket water — rapids, boulder pockets, and deep pools and runs pushed along by strong current over a boulder-and-cobble bed. It is wade fishing only; the current is too quick and the reach too short for boats, and nobody floats it.

Because it flows straight out of Hebgen Dam, this is regulated water, not a snowmelt river. Two decades of record at USGS gage 06038500 show an unusually flat flow regime — a median near 900 cfs with no spring runoff spike — so the reach stays fishable when freestone water across the region is blown out or locked in ice. The trade-off is that dam changes arrive fast: an adjustment at Hebgen shows up here within hours, so conditions can shift more abruptly than they do farther downstream.

Brown trout, rainbow trout, and mountain whitefish live here, but the reason anglers make the trip is the fish that do not. Rainbows and browns run up from Quake Lake to spawn, and those lake-run fish give this little reach an honest shot at a trophy its size does not suggest. Streamers fished deep through the pools, in larger sizes, are the classic way to find them; nymphs and dries worked through the pocket water handle the resident fish.

It fishes all year. Blue-winged olives bring some of the best dry-fly fishing in spring, before the crowds arrive for the early summer salmonfly hatch — the reach's famous event, followed by golden stones and yellow sallies. Caddis and pale morning duns carry midsummer, terrestrials take over in late summer and early fall, olives return in fall, and midges hatch year-round and anchor the winter fishing. Winter here is legitimately productive — the dam keeps the water open and stable when everything nearby is frozen — though reaching the river through deep snow can demand snowshoes or skis.

Access could hardly be simpler. The entire reach is public, and US-287 pullouts line it end to end, so you can park and walk to the water almost anywhere. Campfire Lodge Resort sits beside the river below the dam and just above Quake Lake, with Ghost Village Road running off it along the lower half of the reach, and two Custer Gallatin National Forest campgrounds, Cabin Creek and Beaver Creek, sit along the highway for anglers staying over. West Yellowstone is the nearest town and Bozeman Yellowstone International the nearest airport. All that convenience draws pressure, especially around the salmonfly hatch, so the quietest fishing comes at the edges of the day and the edges of the season.