Green River Segment 4a river run
Green River Segment 4a
This segment is rated as a Class III-IV, which means it is suitable for experienced paddlers who are comfortable with moderate to difficult rapids. The segment covers a total of 26 miles and takes approximately two to three days to complete.
Some of the notable rapids and obstacles on Segment 4A include the Swallow Canyon Rapid, the Government Rapid, and the King Fisher Rapid. The Swallow Canyon Rapid is a Class IV rapid that requires precise maneuvering and quick reflexes. The Government Rapid is a Class III rapid that features large waves and holes that can be challenging to navigate. The King Fisher Rapid is a Class III+ rapid that is known for its steep drops and powerful hydraulics.
To ensure the safety of paddlers and protect the natural environment, there are specific regulations in place for the Green River Segment 4A. All boats must be self-contained and all waste must be carried out. Additionally, camping is only allowed in designated areas and fires are not permitted.
In conclusion, the Green River Segment 4A in Utah is a challenging and rewarding whitewater river run. Paddlers should be experienced and comfortable with Class III-IV rapids, and should plan accordingly based on the ideal streamflow range of 1,000 to 2,000 cfs. It is important to follow all regulations and respect the natural environment of this beautiful region.
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 Green River Segment 4a -- useful for spotting upstream pulses and gauging which tributary is contributing what.
| Streamgauge | Discharge | View |
|---|---|---|
| San Rafael River At Mouth Near Green River | 0 cfs | → |
| Green River At Green River | 3,470 cfs | → |
| San Rafael River Near Green River | 23 cfs | → |
| Green River At Mineral Bottom Nr Cynlnds Ntl Park | 3,870 cfs | → |
| Colorado River At Potash | 3,630 cfs | → |
| Mill Creek Blw Pack Creek Nr Mouth At Moab | 1 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.
Boat launches
- Crystal Geyser Road Grand County
- South Green River Boulevard 450, Green River
- Mineral Bottom Recreation Site
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 Green River Segment 4a 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 Green River Segment 4a
What's the optimal flow for Green River Segment 4a?
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 Green River Segment 4a.