Headwaters At Thousand Island Lake To Agnew Meadows river run
Headwaters At Thousand Island Lake To Agnew Meadows
The run includes several challenging rapids, such as "Devil's Postpile," "Rainbow Falls," and "Hole in the Wall," each with its unique obstacles and challenges. Paddlers must navigate through tight boulder gardens, steep drops, and strong currents, requiring advanced technical skills and experience.
In terms of regulations, paddlers must obtain a permit to access this area, as it is located within the Ansel Adams Wilderness. Additionally, there are strict guidelines for camping and fire use to protect the fragile ecosystem of the region.
Overall, the Whitewater River Run on the San Joaquin River offers a challenging and exhilarating experience for experienced paddlers. It is important to note that this run is not suitable for beginners or those without advanced technical skills. It is essential to check current streamflow levels and weather conditions before embarking on this adventure to ensure safety and enjoyment.
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.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
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.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks -- the upstream story that drives next week's flows.
Regional streamflow levels
USGS streamgauges around Headwaters At Thousand Island Lake To Agnew Meadows -- useful for spotting upstream pulses and gauging which tributary is contributing what.
| Streamgauge | Discharge | View |
|---|---|---|
| Mf San Joaquin R Nr Mammoth Lakes Ca | 217 cfs | → |
| Deadman C A Big Springs Nr Crestview Ca | 33 cfs | → |
| Hot C A Flume Nr Mammoth Lakes Ca | 60 cfs | → |
| Merced R A Happy Isles Bridge Nr Yosemite Ca | 649 cfs | → |
| Merced R A Pohono Bridge Nr Yosemite Ca | 967 cfs | → |
| Big C Div Nr Fish Camp Ca | 0 cfs | → |
Plan a longer trip
The closest boat launches, other paddle runs, and campgrounds so a day on the water can grow into a full weekend.
Other river runs
- National Monument Boundary To Soda Springs Footbridge In Devils Postpile National Monument
- Agnew Meadows To Soda Springs Footbridge
- Soda Springs Footbridge In Devils Postpile National Monument To Rainbow Falls
- Rainbow Falls To National Monument Boundary
- Headwaters In Sec 8, T3s, R25 E To Hemlock Crossing
Campgrounds
- Agnew Meadows
- Agnew Meadows Campground
- Upper Soda Springs Campground (Seasonal)
- Soda Springs
- Upper Soda Springs Campground
- Pumice Flat
Fishing spots
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 At Thousand Island Lake To Agnew Meadows 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.
About Headwaters At Thousand Island Lake To Agnew Meadows
What's the optimal flow for Headwaters At Thousand Island Lake To Agnew Meadows?
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.
Other runs near here
Snoflo-tracked paddle runs within driving distance of Headwaters At Thousand Island Lake To Agnew Meadows.