Water report · Gallatin River
Running low for mid September. Above 11% of past September 13s on record.
Updated 1:00 AM UTC, Sep 13
365 cfs puts Gallatin River in the 11th percentile for September 13, against 97 years of record.
The median for this date is 470 cfs, and half of all September 13s on record fell between 405 and 560.
Over the last 7 days, Gallatin River ran between 424 and 466 cfs, lowest on Aug 12 and highest on Aug 6.
That is 42.0 cfs lower than on Aug 6.
Over the last 30 days, Gallatin River ran between 424 and 876 cfs, lowest on Aug 12 and highest on Jul 18.
That is 308 cfs lower than on Jul 14.
Over the last 90 days, Gallatin River ran between 424 and 2,760 cfs, lowest on Aug 12 and highest on May 31.
That is 1,510 cfs lower than on May 15.
Over the last 12 months, Gallatin River ran between 223 and 2,760 cfs, lowest on Jan 24 and highest on May 31.
That is 36.0 cfs higher than on Sep 12.
No member has posted conditions here lately. The gauge says what the water is doing; an angler who was standing in it says what that felt like.
Post a reportUSGS monitoring location 06043500, Gallatin River near Gallatin Gateway, MT, 6.6 miles from the center of Gallatin River. Provisional data, subject to revision. Values refresh every 30 minutes. Gauge readings describe the river at that point; conditions upstream and downstream will differ.
Readings come from USGS monitoring location 06043500, Gallatin River near Gallatin Gateway, MT, 6.6 miles from the center of Gallatin River. It reports gage height and discharge. Values refresh every 30 minutes and are provisional until the agency reviews them. Gauge readings describe the river at that point; conditions upstream and downstream will differ.
The gauge is half the picture. The other half is what came out of the water: verified catches, the current record, and the anglers holding it.
See the Gallatin River record bookFishing here? Keep a free catch log and compete with anglers on this water. Your exact fishing spot stays private.
Log your catch at Gallatin RiverAnglers must hold a valid fishing license for the state they're fishing. Always follow your local fishing rules and regulations. Handle fish with speed and care: wet hands, minimal air time, quick release.
© 2026 Fish Club LLC·Terms of Service·Privacy Policy·Competitions·Competition Rules·Support