Riverbeta
Blackfoot River · Missoula / Bonner

Whitaker Bridge to Johnsrud Park

The short lower-corridor run, Whitaker Bridge to Johnsrud Park — about six miles that Adventure Missoula runs as their half-day, roughly three hours on the water. Whitaker Bridge sits halfway down the rutted, rocky Johnsrud Park Road. Thibodeau Rapid arrives a mile and a half in: watch the large rock right-center as the river drops, safest route on the right. From there it is read-and-run water to The Ledge, the surf wave a quarter mile above the Johnsrud take-out that works when spring water is up. Expect company — this is the stretch the summer crowd floats.

Class
II-III
Length
5.9 mi
Gradient
—
On-water
≈ 3 hrs
GO
Running well at 2,860 CFS.
Updated 51 min ago · USGS 12340000 Blackfoot River near Bonner MT
Going-to-the-Sun Road Spring StatusGoing-to-the-Sun Road is open to Avalanche Creek on the west side of the park. On the east side, the road is open to Jackson Glacier Overlook. Travel on open sections of the road may change due to spring weather conditions. Visitors should check road conditions before their arrival.NPS · Park Closure ↗
1 thing on this page we haven't confirmed locally — know this river? Open to weigh in.

Everything below traces to a published source, but no local paddler has confirmed these yet. The same items carry a ⚑ flag where they appear on the page; a confirmation or correction from you clears them.

  • When The Ledge is inThe Ledge

    American Whitewater says the surf wave shows up at moderate spring flows; nobody publishes a cfs range for when it forms. American Whitewater 984 ↗

    Know the flow window when The Ledge forms? Even a rough cfs range helps.

No. 01 · Today

What the river is doing today

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Live flow and weather, straight off the gauge — updated every fifteen minutes.

FLOW USGS 12340000 ↗ Blackfoot River near Bonner, MT

2,860
cu ft / sec
falling · -150 over 24 h· gauge 4.14 ft
≈24th percentile for the date — running low for the date · median ~4,370 cfs
9,5406,6753,810945MONSATFRIWEDFORECAST →NOW · 2,860
Too low <1,050Low 1,050–1,500Prime 1,500–6,000High 6,000–9,000Too high >9,000

Zones are a community estimate — no agency publishes a flow window for this run. Today's flow sits in the band of the same color. Dashed forward lines: the NOAA NWPS short-range forecast ↗ on 7-day & 30-day, and the NWRFC ensemble outlook ↗ on Season.

ON THE WATER

Mostly Sunny · Today · NOAA forecast ↗
Water
56°F
Air high
78°F
Precip
0%
Wind
2to 7 mph WSW
Sunrise
5:41AM
Sunset
9:32PM
No. 02 · Honest read

Is today the day?

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A read for what's actually running — not a generic class description. Updated with every gauge tick.

Good day to go

Flow is sitting in the meaty middle of the best-at range — the band we call fat enough to float, lean enough to read.

At 2,860 CFS this is real whitewater and a confident intermediate day. Strong paddlers with a roll or a reliable wet-exit; helmets and full thermal protection. Scout the big features and keep two boats.
  • ✦Scout the crux. Eddy out above the marked rapid and look before you commit.
  • ✦Two boats, minimum. Long runs with no road. You are your own rescue.
  • ✦Helmet, throw bag, whistle on every paddler. Pin kit split between boats.
  • ✦Dress for the swim, not the float — dry layers waiting at the take-out.
  • ✦Tell someone your plan and the time you expect to be off the water.
No. 03 · The run

Mile by mile

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The half-day whitewater sampler — American Whitewater calls Whitaker Bridge the put-in for 'the most bang for your buck.' Thibodeau Rapid and The Ledge inside six miles, on the busiest stretch of the river. American Whitewater ↗

Read-and-run at most flows — but rivers change. Scout anything you can't read from upstream, and treat a flaggedportage / scout note below as the minimum, not the whole story.

mi 1.5Thibodeau Rapid

Thibodeau RapidII-III

About two miles below Whitaker Bridge by American Whitewater's prose (their POI math says closer to a mile and a half). Large rock right-center as the river drops; safest route on the right (Big Sky Fishing). FWP's float map grades it Class II. Flow-dependent. AW ↗
mi 5.7The Ledge

The LedgeII

A surf wave a quarter mile above Johnsrud that comes in when spring water is up — parking directly above and across the road, popular for park-and-play laps (American Whitewater). AW ↗
No. 04 · Getting there & back

How to get there. How to get back.

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Put-in, take-out, and the shuttle between them. Confirm road conditions before a remote launch.
Put-in

Whitaker Bridge

46.9428, -113.5998Directions ↗
Notes
Concrete ramp and toilet halfway down Johnsrud Park Road (rutted and rocky — give it time). Day use. American Whitewater calls it 'a common put in for whitewater paddlers seeking the most bang for their buck.'
Take-out

Johnsrud Park

46.9164, -113.6785Directions ↗
Notes
The largest site on the river and the downstream end of the Recreation Corridor — concrete ramp, drinking water, toilets, and a reservable group picnic shelter (406-542-5500). Day use; closed in winter. On hot summer days it is a full-on beach scene, and the take-out gets very busy.
Shuttle

5.9 mi self-shuttle

≈ 24 min driveShuttle route ↗
Route
Spot a vehicle at the take-out, drive boats to the put-in, retrieve at the end of the day.
Source
Driving distance via the Mapbox Directions API; matches a standard road shuttle, not a back-road shortcut.
Permits
None to float for private boaters; a Montana Conservation License is required to use FWP fishing access sites. Recreation Corridor rules apply through the take-out: no riverside camping, fires in a fire pan only, no glass, portable toilet required. Enforcement on this stretch is strict — FWP, BLM, and the county sheriff announced a zero-warning posture on violations here in 2014. Non-motorized watercraft only.
Season
May through September. Whitewater character at May-June flows; by mid-summer this is the river's most popular splash-and-float water, and the heaviest-used stretch on a hot weekend.
No. 05 · Hazards on this run

What to watch for

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Hazards we have on record for this run specifically. Universal river-safety practice — gear, group, emergencies — is on the disclaimer & safety page.

No standout hazards are flagged for this run — which is not the same as none. Wood moves and channels shift; scout anything you can't read from upstream.

No. 06 · Before you head up the highway

Today's gear call

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Tailored to today's water temperature and this run's difficulty. The full always-bring list is on the disclaimer & safety page.
Today-specific · 56°F water · class II-III

At 56°F, this gear is non-optional.

Splash jacket and synthetic insulating layers.
Water is 56°F — cold if you swim.
Helmet rated for whitewater.
Class II-III — boulders and shallow hits.
Throw bag per paddler; pin kit split between boats.
Self-rescue is the only rescue out here.
Dry clothes and a warm hat in a dry bag.
Hypothermia prevention after a swim.
No. 07 · From the boats that ran it

What the last few boats said

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Sorted by similarity to today's flow. Reports are the best signal we have for what a run feels like — leave one when you get home.
No trip reports on this run yet — be the first.The rapids you ran, the flow at the gauge, the line you took — that is the best signal there is.
Gauges & flow
Land managers
Community
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