Musselshell River Near Roundup flow report
As of July 14, 2026, Musselshell River Near Roundup is flowing at 178 cfs with a gage height of 2.18 ft, holding steady over the past 24 hours. Source: USGS gauge #06126500, refreshed throughout the day.
Historical Data
Musselshell River Near Roundup at a glance
How Musselshell River Near Roundup is running right now, where it sits on the map, and the key gauge stats.
Musselshell River Near Roundup is flowing at 178 cfs, with the water sitting 2.18 ft at the gage. Flow has held roughly steady over the past 24 hours.
This is USGS gauge #06126500 in Montana. Over the past 10 days the average has been 165 cfs, peaking at 192 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Montana flow report.
Streamflow Forecast
Over the next 5 days, Musselshell River Near Roundup Mt is expected to hold near today's 185 cfs, toward roughly 171 cfs by 2026-07-18 (likely range 73-397 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
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.
Musselshell River Near Roundup
The river's primary constituents are snowmelt and precipitation. The river is fed by several tributaries, including the Dry Creek and Big Coulee Creek. There are no major dams on the Musselshell River. Seasonal trends show the highest flows occurring in the spring due to snowmelt and the lowest flows in the fall and winter due to decreased precipitation. Interestingly, the Musselshell River is named after the freshwater mussel shells that can be found along its banks, despite the fact that the mussels themselves are rarely seen in the river today.
Nearby streamflow levels
Cross-check Musselshell River Near Roundup's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Musselshell River Near Roundup Mt | 178 cfs |
| Musselshell River At Musselshell Mt | 131 cfs |
| Musselshell River Ab Mud Cr Nr Shawmut Mt | 37 cfs |
| Yellowstone River At Billings Mt | 8,180 cfs |
| Pryor Creek Nr Huntley Mt | 21 cfs |
| Flatwillow Creek Near Mosby Mt | 0 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Musselshell River Near Roundup. 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 |
|---|---|
| Roundup 7.4 Sse | 0 in |
| Nohrsc Roundup 8.1 Se | 0 in |
| Mt Mesonet Broadview | 0 in |
| Pompeys Pillar 18 N | 0 in |
| Mt Mesonet Huntley Arc | 0 in |
| Grass Range | 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 Musselshell River Near Roundup in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Musselshell River Near Roundup crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Musselshell River Near Roundup
Where does the streamflow data for Musselshell River Near Roundup come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 06126500. 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 Musselshell River Near Roundup 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 Musselshell River Near Roundup report
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