Gallatin River Near Gallatin Gateway Flow Report
As of July 26, 2026, Gallatin River Near Gallatin Gateway is flowing at 618 cfs with a gage height of 1.82 ft. Source: USGS gauge #06043500, refreshed throughout the day.
Historical Data
Gallatin River Near Gallatin Gateway at a glance
How Gallatin River Near Gallatin Gateway is running right now, where it sits on the map, and the key gauge stats.
Gallatin River Near Gallatin Gateway is flowing at 618 cfs, with the water sitting 1.82 ft at the gage.
This is USGS gauge #06043500 in Montana. Over the past 10 days the average has been 693 cfs, peaking at 771 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Montana flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #06043500).
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, Gallatin River Near Gallatin Gateway Mt is expected to hold near today's 618 cfs, toward roughly 579 cfs by 2026-07-31 (likely range 438-764 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.
| 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.
Gallatin River Near Gallatin Gateway
The river's flow is primarily provided by snowmelt from surrounding mountains and precipitation throughout the year. No major dams impact the river's flow, but there are several small tributaries that contribute to its overall volume. The river experiences seasonal fluctuations in flow, with peak flows in late spring and early summer and lower flows in the fall and winter. Interestingly, the Gallatin river was featured in the Robert Redford film "A River Runs Through It". Despite its popularity, visitors should be cautious of the river's strong currents and rocky terrain.
Nearby streamflow levels
Cross-check Gallatin River Near Gallatin Gateway's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Gallatin River Near Gallatin Gateway Mount | 618 cfs |
| Hyalite Creek At Hyalite River S Near Bozeman Mount | 78 cfs |
| Madison River Above Powerplant Near Mcallister Mount | 244 cfs |
| Madison River Below Ennis Lake Near Mcallister Mount | 1,170 cfs |
| Willow Creek Near Harrison Mount | 17 cfs |
| Gallatin River At Logan Mount | 435 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Gallatin River Near Gallatin Gateway. 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 Lick Creek | 0 in |
| Lick Creek | 0 in |
| Mt Mesonet Bozeman | 0 in |
| Bozeman Montana State Univ | 0 in |
| Nohrsc Bozeman 1.5 Sse | 0 in |
| Nohrsc Shower Falls | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Gallatin River Near Gallatin Gateway.
Boat launches
See all →
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 Gallatin River Near Gallatin Gateway in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Gallatin River Near Gallatin Gateway crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Gallatin River Near Gallatin Gateway
What is the Gallatin River Near Gallatin Gateway flow rate right now?
As of July 26, 2026, Gallatin River Near Gallatin Gateway is flowing at 618 cfs. The live value, gage height, and 24-hour trend are shown at the top of this page.
Is the Gallatin River Near Gallatin Gateway running high or low right now?
Check the percent of median figure on this page: above 100% means Gallatin River Near Gallatin Gateway 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 Gallatin River Near Gallatin Gateway come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 06043500. 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 Gallatin River Near Gallatin Gateway 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 Gallatin River Near Gallatin Gateway report
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