Paddle Report

Rainbow Falls To National Monument Boundary river run

California, USA San Joaquin River, Middle Fork 10.0 mi long Class III-IV
Today high
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Tonight low
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Current flow
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% of normal
61%
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Linked streamgauge
-- cfs
Gauge height
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 Rainbow Falls To  National Monument Boundary -- California paddle run
Rainbow Falls To National Monument Boundary California · San Joaquin River, Middle Fork
About this run

Rainbow Falls To National Monument Boundary

The Whitewater River Run from Rainbow Falls to the National Monument Boundary in California is a popular spot for rafting and kayaking. The ideal streamflow range for this section of the river is between 500 and 2000 cfs. The run is rated as Class III-IV, making it suitable for intermediate to advanced paddlers. The segment mileage of this section is approximately 7.5 miles, with a drop of 1800 feet in elevation.

The river is known for its technical rapids, including the popular "Meatgrinder" rapid, which is a Class IV drop with a large boulder in the center of the channel. Other notable rapids include "Pinball" and "Dinky Creek Falls." There are also several sections of calm water that allow paddlers to catch their breath before the next rapid.

There are specific regulations to the area, including a permit requirement for all boaters. The number of permits issued is limited, and they are typically issued on a first-come, first-served basis. Additionally, all boaters must wear a personal flotation device and carry a whistle.

Overall, the Whitewater River Run from Rainbow Falls to the National Monument Boundary is a challenging and exciting paddle for experienced boaters. Proper planning and adherence to regulations are essential for a safe and enjoyable trip.
StateCalifornia
RiverSan Joaquin River, Middle Fork
Run length10.0 mi
ClassIII-IV
Elevation7,593 ft
Current flow--
Percent of normal61%
StreamgageUSGS 11224000
Latitude37.6019°
Longitude-119.0838°
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 Rainbow Falls To National Monument Boundary -- 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 Rainbow Falls To National Monument Boundary 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 Rainbow Falls To National Monument Boundary

What's the optimal flow for Rainbow Falls To National Monument Boundary?

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.