Yellowstone River Near Altonah Flow Report
As of August 2, 2026, Yellowstone River Near Altonah is flowing at 103 cfs with a gage height of 1.19 ft, receding 10% over the past 24 hours. Source: USGS gauge #09292500, refreshed throughout the day.
Historical Data
Yellowstone River Near Altonah at a glance
How Yellowstone River Near Altonah is running right now, where it sits on the map, and the key gauge stats.
Yellowstone River Near Altonah is flowing at 103 cfs, with the water sitting 1.19 ft at the gage. Flow is down 10% since yesterday as the gauge recedes.
This is USGS gauge #09292500 in Utah. Over the past 10 days the average has been 163 cfs, peaking at 366 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Utah flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #09292500).
Estimate flows at an ungauged site
Drainage-area ratio transfer from this gauge . Most reliable for hydrologically similar sites in the same watershed with area ratios between roughly 0.5 and 1.5.
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Yellowstone River Near Altonah is expected to hold near today's 103 cfs, toward roughly 93 cfs by 2026-08-07 (likely range 53-163 cfs) -- drier than normal for the date.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
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.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Yellowstone River Near Altonah
The river is not fed by any specific tributaries or dams in this area. The flow of the river tends to be highest during the spring and early summer months, and lower during the fall and winter. Interesting hydrologic features in the area include several hot springs and geysers, as well as a large underground reservoir known as the Madison Aquifer. Overall, the Yellowstone River is an important source of water and recreation for the region, and its hydrology is influenced by a variety of factors including climate, geology, and human activity.
Nearby streamflow levels
Cross-check Yellowstone River Near Altonah's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Yellowstone River Near Altonah | 103 cfs |
| Yellowstone River. At Bridge Campgrnd | 79 cfs |
| Lake Fork River Below Moon Lake Near Mountain Home | 18 cfs |
| Lake Fork River Above Moon Lake | 44 cfs |
| Rock Creek Near Mountain Home | 89 cfs |
| Uinta River Below Powerplant Diversion Near Neola | 133 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Yellowstone River Near Altonah. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Nohrsc Lakefork #3 | 1 in |
| Lakefork #3 | 1 in |
| Nohrsc Lakefork #1 | — |
| Lakefork #1 | 0 in |
| Altamont | 0 in |
| Brown Duck | 0 in |
River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Yellowstone River Near Altonah in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Yellowstone River Near Altonah crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Yellowstone River Near Altonah
What is the Yellowstone River Near Altonah flow rate right now?
As of August 2, 2026, Yellowstone River Near Altonah is flowing at 103 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Yellowstone River Near Altonah running high or low right now?
Check the percent of median figure on this page: above 100% means Yellowstone River Near Altonah is running higher than normal for the date, below 100% means lower. The 24-hour trend shows whether it's rising or falling.
Where does the streamflow data for Yellowstone River Near Altonah come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 09292500. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Yellowstone River Near Altonah rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Yellowstone River Near Altonah report
Create your free account to track this river — and everything else you love on the water.
- Flow alerts — get pinged the moment this river hits your range
- Save favorites — every river, lake & snowpack in one place
- Full history & forecasts — plus the free iPhone app