Gallatin River near Gallatin Gateway, MT

Southwest Montana (Madison & Gallatin) · USGS gauge 06043500 · Updated Oct 24, 2:37 PM PDT · USGS data, provisional

All 2 Gallatin River gauges in Montana

Fishable/Floatable419 cfs● steady (+10% in 24 h)

Reading time: Oct 24, 2:00 PM PDT · Provisional data

Flow is in a typical range for the date. Rivers are generally easiest to fish and float when they are near their normal flow, but this status says nothing about water clarity, hatches, hazards such as wood in the river, or dam releases.

Vs. normal for this date
49th percentile
Typical range (25th–75th)
376–493 cfs
Median for this date
421 cfs
7-day low / high
345 / 436 cfs

Plain-language explanation

Gallatin River near Gallatin Gateway is flowing at 419 cubic feet per second (cfs) as of Oct 24, 2:00 PM PDT. That is in the normal range for this time of year: lower than about 51% of the daily flows this gauge has recorded for this date (give or take 7 days) over 97 years of record (1889–2026).

The middle half of those historical flows runs from 376 to 493 cfs, with a median of 421 cfs; the lowest 10% of days are at or below 326 cfs and the highest 10% at or above 570 cfs.

Over the last 24 hours the flow has been steady (+10.0%). In the last 7 days it ranged from 345 to 436 cfs.

Why this status: Flow is within the range this gauge normally sees at this time of year (or the deviation is too small in absolute terms to matter).

Quick answers

Is the Gallatin River near Gallatin Gateway fishable today?

Flowcast's status for the Gallatin River near Gallatin Gateway is “Fishable/Floatable”: flow is 419 cfs, within the range this gauge normally sees at this time of year, at the 49th percentile for this date (as of Oct 24, 2:00 PM PDT). That describes flow only. It says nothing about water clarity, temperature, fish activity, access or fishing regulations.

What is the current flow of the Gallatin River near Gallatin Gateway?

419 cubic feet per second at USGS gauge 06043500 as of Oct 24, 2:00 PM PDT, provisional data.

Is the Gallatin River near Gallatin Gateway too high or too low right now?

Neither: it is inside the typical range for the date (376 to 493 cfs).

Is the Gallatin River near Gallatin Gateway rising or falling?

Over the last 24 hours the flow has been steady (+10.0%).

What is a normal flow for the Gallatin River near Gallatin Gateway in October?

For this date (give or take 7 days) the median is 421 cfs and the middle half of days runs 376 to 493 cfs, over 97 years of USGS record.

7-day trend

typical range for this date (25th-75th pct)331361390420450Sun 10/18Mon 10/19Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24

Hourly flow in cfs, Pacific time. The shaded band is the typical range (25th–75th percentile) for this date, shown when it falls within the chart.

Day (Pacific)Mean cfsPercentileStatus that day
Sun Oct 1836016thFishable/Floatable
Mon Oct 1935515thFishable/Floatable
Tue Oct 2035114thFishable/Floatable
Wed Oct 2134714thFishable/Floatable
Thu Oct 2234814thFishable/Floatable
Fri Oct 2337624thFishable/Floatable
Sat Oct 24 (so far)42953rdFishable/Floatable

Seasonal context

1002005001,0002,0005,00010,000JanFebMarAprMayJunJulAugSepOctNovDec

Shaded band: 10th–90th percentile of daily flows through the year; dashed line: median. Log scale. Dot: today's flow. Based on 97 years of USGS daily data (1889–2026).

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Official resources

Links go to the agencies' own websites and were checked as working. Flowcast does not summarize fishing or boating rules: regulations and closures change, and the agency pages are the authority.

About this gauge

USGS site
USGS-06043500
USGS name
Gallatin River Near Gallatin Gateway, Mt
Drainage area
819 sq mi
Location
45.4973, -111.2707
Record in this analysis
1889–2026
Data from the U.S. Geological Survey (USGS). Readings are provisional and subject to revision. Flowcast statuses are automated comparisons with each gauge's own history, not safety ratings or fishing reports. Check local conditions, weather, regulations and closures before you go. Rivers can change quickly.

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Southwest Montana: Madison & Gallatin

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