Paddle Report

Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir river run

Idaho, USA Bull River Class IV
Today high
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Tonight low
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Current flow
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% of normal
81%
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Linked streamgauge
-- cfs
Gauge height
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Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir -- Idaho paddle run
Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir Idaho · Bull River
About this run

Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir

The proposed whitewater river run Boundary Addition in the Cabinet Mountains Wilderness, Sec. to Cabinet Gorge Reservoir in Idaho is a thrilling stretch of water ideal for intermediate to advanced paddlers. The ideal streamflow range for this run is between 800 and 2500 cfs, which generally occurs during the early summer months. The segment mileage is approximately 8 miles with a class rating of III-IV, featuring a mix of continuous rapids and challenging drops.

The specific river rapids and obstacles along this stretch include the "Guardrail" rapid, which is a technical Class IV drop with a narrow chute and a tight turn. Another prominent feature is the "Super Slide" rapid, where paddlers must navigate through a steep, narrow chute. Along with rapids, paddlers must also navigate around rocks and boulders.

There are specific regulations for this area that must be followed, including obtaining a permit for overnight camping, adhering to Leave No Trace principles, and respecting the wildlife and natural resources in the area. Additionally, the use of motorized equipment is prohibited in the wilderness area.

StateIdaho
RiverBull River
ClassIV
Elevation2,070 ft
Current flow--
Percent of normal81%
StreamgageUSGS 12391950
Latitude48.0287°
Longitude-115.8455°
Detailed forecast

Plan your run down to the hour

Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no. Watch the precipitation column on the meteogram; rain ahead of a run typically lifts flows 12-48 hours later depending on the basin.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks -- the upstream story that drives next week's flows.

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Regional flow

Regional streamflow levels

USGS streamgauges around Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir -- useful for spotting upstream pulses and gauging which tributary is contributing what.

Whitewater safety

Check the flow before you run
Use the linked-gauge card and Regional Flow panel above. Class ratings change with flow -- a Class III at low water can become Class IV+ at high water.
Know your skill ceiling
Pick runs comfortably below your ceiling. Cold-water and big-water runs raise the consequences of any mistake.
Wear the right gear
Helmet, PFD, drysuit / wetsuit when water is below 60°F. Throw bag, knife, and whistle on your person, not in the boat.
Scout, set safety, and run with a team
Scout new rapids on foot, set safety with throw bags above the consequence pool, and run with at least one other competent paddler.
Respect the river
Strainers, undercuts, low-head dams, and wood can kill at any class rating. When in doubt, portage.

Set push alerts in the Snoflo app

Save Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir as a favorite, set a discharge threshold (e.g. "alert me when flow hits 600 cfs"), and the iOS app pushes the moment the linked gauge crosses.

FAQ

About Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir

What's the optimal flow for Boundary Proposed Addition Cabinet Mtns Wilderness, Sec. To Cabinet Gorge Reservoir?

The optimal flow depends on the section and the craft. Check the Run Details panel for the linked gauge and current status.

How fresh is the cfs reading on this page?

The linked USGS streamgauge reports continuously (every 15 minutes); Snoflo refreshes throughout the day. Hover the streamflow sparkline to read individual datapoints.

What's the whitewater class?

See the Run Details panel for the class rating Snoflo tracks for this run. Class ratings change with flow -- a Class III at low water can become Class IV in high water.

Where do I put in / take out?

Tap Directions in the hero above to open driving directions to the put-in. For shuttle planning, check the Nearby Boat Launches panel and the river run operator's site.

Can I get alerts when flows hit the optimal range?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this run, set a discharge threshold, and you'll get a push the moment the gauge crosses.