Paddle Report

Headwaters To Boundary Of Rocky Mountain National Park river run

Colorado, USA Big Thompson River, North Fork 8.0 mi long Class II-III
Today high
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Tonight low
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Current flow
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% of normal
135%
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Linked streamgauge
-- cfs
Gauge height
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 Headwaters To  Boundary Of Rocky Mountain National Park -- Colorado paddle run
Headwaters To Boundary Of Rocky Mountain National Park Colorado · Big Thompson River, North Fork
About this run

Headwaters To Boundary Of Rocky Mountain National Park

The Whitewater River Run from Headwaters to Boundary of Rocky Mountain National Park in Colorado is a popular destination for white water enthusiasts. The ideal streamflow range for this river is between 500 and 1500 cfs, with the best time to run the river being from May to July. The class rating for the river varies between Class II and Class IV, depending on the segment.

The river run is approximately 26 miles long, and can be divided into three segments. The first segment is from the headwaters to the town of Tabernash, which is approximately 7 miles long and rated as Class II-III. The second segment is from Tabernash to the town of Granby and is approximately 10 miles long, with a rating of Class III-IV. The final segment is from Granby to the boundary of Rocky Mountain National Park, which is approximately 9 miles long and rated as Class II-III.

The river features several rapids and obstacles, including the Railroad Rapids, which is a Class III rapid that requires precise navigation to avoid rocks and other obstacles in the river. There are also several other Class III-IV rapids throughout the river, such as the Devil’s Elbow and the Pinball Rapids.

There are specific regulations in place for the Whitewater River Run, including a requirement for all boaters to wear personal flotation devices and a restriction on the use of motorized watercraft. Additionally, all participants in the river run must adhere to Leave No Trace principles, including properly disposing of trash and minimizing the impact on the surrounding natural environment.
StateColorado
RiverBig Thompson River, North Fork
Run length8.0 mi
ClassII-III
Elevation10,170 ft
Current flow--
Percent of normal135%
StreamgageUSGS 09010000
Latitude40.4876°
Longitude-105.6473°
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 Headwaters To Boundary Of Rocky Mountain National Park -- 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 Headwaters To Boundary Of Rocky Mountain National Park 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 Headwaters To Boundary Of Rocky Mountain National Park

What's the optimal flow for Headwaters To Boundary Of Rocky Mountain National Park?

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.