Madison River below Hebgen Lake Fishing Guides

About the Madison River below Hebgen Lake

This gauge sits on the Madison River just below Hebgen Dam, at the very top of the reach that made the river famous. Hebgen Lake stores water off the Yellowstone plateau, and the release from it sets the flow for everything downstream through the Madison valley to Ennis and beyond. A short distance below the gauge the river enters Quake Lake, formed in 1959 when an earthquake dropped an entire mountainside into the canyon, and below that it runs the long riffle known to anglers as the fifty mile riffle.

The tailwater character here is real but moderate. Hebgen is a large storage reservoir and the release moderates both the flood peaks and the low flows, so the Madison below it runs with far more stability than a snowmelt river of this size otherwise would. Temperature is reported at this gauge alongside discharge and stage, and the temperature record is the one guides actually watch, because summer warming in the upper river is what drives hoot owl restrictions and the voluntary afternoon closures that shape the fishing season in hot years.

The fishery is wild rainbow and brown trout with no stocking, plus mountain whitefish in numbers, and cutthroat and the occasional grayling moving down from the Yellowstone country above. Fish here are not large by western standards but they are numerous, strong and famously willing, and the salmonfly hatch in early summer draws anglers from around the world. This reach carries as much guide traffic as almost any water in Montana, so the discharge trace and the temperature trace together are what separate a good day from a crowded one. The reach directly below the dam is short, heavily walked and subject to its own access rules, so most anglers read this gauge as the control on the whole river rather than as a description of one piece of water. What the release does here on a given morning sets what the wade fishing at Lyons and Palisades and the float water down to Ennis will do that afternoon, which is why it is among the most watched gauges in Montana.

Access

West Yellowstone - the gateway town nearby, with fly shops, guides, lodging and the closest full services.
Hebgen Lake - the reservoir immediately above, with its own fishery, ramps and lakeside camping.
Quake Lake - the earthquake formed lake just downstream, with the visitor centre and interpretive site.
Ennis - down the valley, the main guiding and outfitting base for the lower Madison.
Yellowstone National Park - immediately east, with the Firehole, Gibbon and upper Madison inside the boundary.
Bozeman - roughly two hours north, with the nearest major airport and full services.
Cameron - mid valley, with lodges, access sites and river camps along the fifty mile riffle.

Seasons

Spring: moderated by the dam and fishable when freestone rivers are blown, with strong early season fishing below the reservoir.
Summer: the salmonfly hatch and the peak of the season, though afternoon temperature can trigger hoot owl restrictions in hot years.
Fall: brown trout move and feed hard, the crowds thin and the fishing is as good as it gets on this river.
Winter: cold and quiet, with the tailwater staying open and offering slow but genuine fishing on mild days.