Madison River

Montana·Southwest Montana·45.10° N, 111.65° W

The Madison runs about 140 miles from the confluence of the Firehole and Gibbon inside Yellowstone National Park to Three Forks, where it joins the Jefferson and Gallatin to form the Missouri. The famous water is the upper river — 50 miles of continuous riffle and pocket water between Quake Lake and Ennis Lake, often called the 'Fifty Mile Riffle' because there is almost no slow water in the entire stretch. It runs at consistent grade through a wide valley with the Madison Range on one side and the Gravelly Range on the other, and it holds wild rainbows and browns averaging 14-17 inches with enough fish over 20 to keep things interesting. Below Ennis Lake the river drops into Bear Trap Canyon, a Wilderness Study Area with bigger holding water, fewer crowds, and consistent flows from the powerhouse releases. Below Bear Trap the Lower Madison runs warm in summer through the Three Dollar Bridge / Black's Ford / Greycliff stretch, fishing best from October through May.

The Upper Madison fishes well from late spring through late fall. The signature event is the salmon fly hatch — Pteronarcys californica — typically late June into early July, working upstream from Ennis to Lyons Bridge over about two weeks. Caddis are heavy through summer, with PMDs in July, and Tricos and BWOs taking over in fall. The river fishes equally well on dry fly, nymph, and streamer. Walk-and-wade access is the best in the West thanks to FWP fishing access sites every few miles from Quake Lake to Ennis, but float trips out of a drift boat let you cover more water. The float from Lyons Bridge to Palisades or Palisades to McAtee is the classic day. Winter is closed from the third Saturday of November through the third Saturday of May above the Hebgen Dam, and is restricted in the Park section as well — check current FWP regulations.

The corridor town is Ennis, with three established fly shops (The Tackle Shop, Madison River Fishing Company, and the Madison Valley Fly Shop), guides for every section, and lodging from streamside cabins to motels. West Yellowstone serves the upper river near the Park boundary. Drive times: 1 hour from Bozeman to Ennis, 4 hours from Salt Lake City, 5 hours from Billings. Elevation is 4,800-6,500 ft so summer evenings are cold. Wading is straightforward but the bottom is round-cobble freestone — felt or studded rubber soles, and a wading staff is not optional in higher flows. The river runs from late October through early May at very low, clear winter flows where sight-nymphing midges in the slack water around Three Dollar Bridge and Raynolds Pass can be productive on warmer afternoons.

Flow

530 CFS

Madison R near West Yellowstone

Water Temp

60°F

Madison R near West Yellowstone

Condition

Below Normal

Weather

43°F

Mostly Clear

Insights

Flow

Low flows at 530 CFS

Fish are spooky. Lighten tippet and lengthen leaders.

Wind

Wind 18 mph — strong

Shorter casts and heavier flies. Find a bank with cover.

Snowpack

Snowpack 45% of normal

Madison River basin snowpack is at 45% of normal — expect an early runoff and low summer flows, with tailwaters and spring creeks holding up best. The May–July runoff forecast for Ennis Lake Inflow is 76% of average.

Water Temp

Water 60°F — prime

Active-feeding window.

Species

Species	Abundance	Best Season	Size	Notes
Rainbow Trout	Abundant	Jun-Oct	12-20"	Wild population throughout. Best concentrations between Quake Lake and Ennis Lake. Whirling disease hit the Madison hard in the 1990s but rainbows have largely recovered.
Brown Trout	Common	Sep-Nov	14-24"	Fall pre-spawn aggression makes streamer fishing very productive Sep-Nov. Highest densities in the Bear Trap Canyon and lower river.
Mountain Whitefish	Common	Year-round	10-18"	Native and abundant in all sections. Often hit small nymphs aggressively.

Ideal wading flow800–1,800 CFS

Blow-out>3,500 CFS

Ideal water temp48–62°F

Late June into early July for the salmon fly hatch. July-August for caddis, PMDs, and hopper fishing. September-October for fall BWO, Tricos, and aggressive pre-spawn browns. Closed above Hebgen through winter.

Sections

8 sections on this river

Lower Madison — Greycliff to Three Forks

Wade & FloatBrown Trout · Rainbow Trout

Below Bear Trap the river widens through a valley with mixed access points (Greycliff, Black's Ford, Cobblestone, Warm Springs). Fishes best from October through early June when temperatures are cool. Summer brings hoot-owl restrictions and warm-water stressed trout.

Best for: Brown trout and rainbow trout on streamers, midges, and BWOs. Best Oct-May. Wade or float. Avoid July-August (warm-water mortality risk).

Bear Trap Canyon

Wade & FloatBrown Trout · Rainbow Trout

Nine-mile wilderness canyon below Ennis Dam. Steep walls, big boulders, deep pools — the most dramatic water on the Madison. Foot access only via the Bear Trap trailhead. Rafts and drift boats run it for experienced floaters (Class III at higher flows). Holds the biggest brown trout on the river.

Best for: Brown trout and rainbow trout on streamers and stonefly nymphs. Deep nymph rigs and sink-tip streamers. Best Sep-Jun (lower flows). Skip during high releases.

Varney to Ennis

Wade & FloatBrown Trout · Rainbow Trout

Final stretch of the upper river before Ennis Lake. Hopper fishing along the cut banks is the staple. Town of Ennis bracketed by Eight Mile Ford and the FWP boat ramp.

Best for: Rainbow trout and brown trout on hopper-dropper, attractor dries, and streamers. Evening caddis fall. Easy access from Ennis.

McAtee Bridge to Varney (Three Dollar Bridge)

Wade & FloatRainbow Trout

The 'Three Dollar Bridge' stretch — historic access point known nationally. Wider, slightly slower water with productive insect hatches. The slick water around Three Dollar holds selective rainbow trout that test PMDs and Tricos with long leaders.

Best for: Rainbow trout on technical dry fly. PMDs, BWOs, Tricos. Best for wade anglers willing to slow down and sight-fish.

Palisades to McAtee Bridge

Wade & FloatBrown Trout · Rainbow Trout

Continuation of the upper river through the wider valley. River braids slightly and gathers spring inflow that holds fish through warmer summer water. McAtee is the take-out for the day float; the next stretch downstream sees fewer boats.

Best for: Rainbow trout and brown trout. Hopper fishing in summer; caddis evenings; nymphing the inside seams. Less crowded than the upper sections.

Lyons Bridge to Palisades

Wade & FloatSalmon · Brown Trout · Rainbow Trout

The classic float section of the upper Madison. Continuous riffles and pocket water with no slow stretches. Drift boats are the standard, but bank access at Lyons, Reynolds Pass, Palisades, and points between is excellent for wading. Bigger fish in the deeper runs along the cut banks.

Best for: Wild rainbow trout and brown trout. Float fishing with hopper-dropper, salmon fly dries, or streamers off the boat. The signature Madison float.

Quake Lake to Lyons Bridge

Wade & FloatSalmon · Brown Trout · Rainbow Trout

Classic riffle-and-pocket-water below the outlet of Quake Lake — the start of the 'Fifty Mile Riffle'. Consistent grade, round-cobble bottom, FWP access points every few miles. Salmon fly hatch peaks here last week of June into the first week of July.

Best for: Wild rainbow and brown trout. Dry fly and nymph fishing throughout summer. Salmon flies in late June; PMDs and caddis through August.

Hebgen Tailwater — Hebgen Dam to Quake Lake

WadeBrown Trout · Rainbow Trout

Three-mile tailwater between Hebgen Dam and the head of Quake Lake. Slick spring-creek style water with consistent flows and selective rainbows and browns from 14-20 inches. Wading only; small flies on long leaders.

Best for: Rainbow trout and brown trout on technical dry fly and small nymphs. PMDs and Tricos in summer; midges all winter. Best Apr-Nov.

Regulations

Current fishing rules and restrictions

Open seasons vary by section. Catch-and-release on rainbows from Quake Lake to Ennis Lake all year (when open). Two trout daily, only one over 18 inches, with restrictions varying upriver and downriver. Always check current regulations — sections change frequently.

Quake Lake to Ennis Lake: open year-round; rainbows catch-and-release; 2 trout daily, only 1 over 18 inches (browns/whitefish)
Ennis Lake to Ennis Dam (Bear Trap Canyon): year-round; standard limits
Below Ennis Dam (Lower Madison): year-round; standard limits
Hebgen Dam to Quake Lake outlet: 3rd Sat May through Nov 30; standard limits
Yellowstone National Park section: separate Park fishing permit required; flies/lures only

Madison FWP regulations have changed often in recent years. Hoot owl (afternoon closure) restrictions apply on the Lower Madison in hot/low summers — check the FWP Hoot Owl page before fishing in July-August.

Source: Montana Fish, Wildlife & Parks — Fishing Regulations. Regulations change annually — verify before fishing.

Access & Logistics

Getting there, fly shops, and lodging

Getting There

Ennis, MT

1 hr from Bozeman, 4 hrs from Salt Lake City, 5 hrs from Billings

Fly Shops

Camping & Lodging

Beaver Creek, Cabin Creek, and West Fork campgrounds along the upper river. Streamside cabins and motels in Ennis. West Yellowstone is the upper-river base camp with full services.

FWP fishing access sites every few miles between Quake Lake and Ennis. Highway 287 parallels the upper river. Bear Trap Canyon access is foot-only from the trailhead at the Bear Trap parking area. Lower Madison has access at Greycliff, Black's Ford, and Cobblestone.

Conditions data is live from public monitoring networks. Regulations change annually — always verify current rules with your state fish & wildlife agency before fishing.

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