Montana river flow forecasts
National Weather Service flow forecasts for 11 of 38 Montana gauges on Flowcast: 0 forecast to rise by 10% or more, 8 to drop, 0 to rise and drop, 3 to stay within ±10% of the latest USGS reading.
Updated Nov 3, 9:17 AM PST · USGS data, provisional
| River gauge | Latest USGS cfs | Forecast high, next 3 days | Forecast high, whole forecast | Forecast low | Last forecast value | Outlook | NWS issued |
|---|---|---|---|---|---|---|---|
| Yaak River near Troy | 98.2 | 92.0 (-6%) Tue Nov 3, 10 AM | 98.0 (-0%) Wed Nov 11, 10 PM | 81.0 (-18%) Thu Nov 5, 4 AM | 98.0 (-0%) Thu Nov 12 | Forecast to drop | Nov 2, 8:11 AM PST |
| Middle Fork Flathead River near West Glacier | 494 | 487 (-1%) Tue Nov 3, 10 AM | 487 (-1%) Tue Nov 3, 10 AM | 436 (-12%) Mon Nov 9, 10 PM | 436 (-12%) Thu Nov 12 | Forecast to drop | Nov 2, 8:11 AM PST |
| Bitterroot River near Missoula | 1,010 | 986 (-2%) Tue Nov 3, 10 AM | 986 (-2%) Tue Nov 3, 10 AM | 849 (-16%) Wed Nov 11, 4 PM | 849 (-16%) Thu Nov 12 | Forecast to drop | Nov 2, 7:04 AM PST |
| Clark Fork above Missoula | 1,710 | 1,660 (-3%) Tue Nov 3, 10 AM | 1,660 (-3%) Tue Nov 3, 10 AM | 1,530 (-11%) Sun Nov 8, 4 AM | 1,540 (-10%) Thu Nov 12 | Forecast to drop | Nov 2, 7:04 AM PST |
| Clark Fork below Missoula | 2,670 | 2,590 (-3%) Tue Nov 3, 10 AM | 2,590 (-3%) Tue Nov 3, 10 AM | 2,360 (-12%) Sun Nov 8, 10 AM | 2,380 (-11%) Thu Nov 12 | Forecast to drop | Nov 2, 7:04 AM PST |
| Kootenai River below Libby Dam, near Libby | 14,300 | 13,700 (-4%) Tue Nov 3, 10 AM | 13,700 (-4%) Tue Nov 3, 10 AM | 4,890 (-66%) Thu Nov 12, 4 AM | 4,890 (-66%) Thu Nov 12 | Forecast to drop | Nov 2, 8:11 AM PST |
| Bitterroot River near Darby | 262 | 244 (-7%) Wed Nov 4, 10 AM | 244 (-7%) Wed Nov 4, 10 AM | 226 (-14%) Fri Nov 6, 4 PM | 230 (-12%) Thu Nov 12 | Forecast to drop | Nov 2, 7:04 AM PST |
| Rock Creek near Clinton | 314 | 276 (-12%) Tue Nov 3, 10 AM | 292 (-7%) Tue Nov 10, 10 AM | 245 (-22%) Fri Nov 6, 10 PM | 292 (-7%) Thu Nov 12 | Forecast to drop | Nov 2, 7:04 AM PST |
| Blackfoot River near Bonner | 669 | 669 (+0%) Tue Nov 3, 10 AM | 669 (+0%) Tue Nov 3, 10 AM | 641 (-4%) Sun Nov 8, 4 PM | 641 (-4%) Thu Nov 12 | Forecast within ±10% | Nov 2, 7:04 AM PST |
| Clark Fork near Plains | 10,500 | 10,400 (-1%) Tue Nov 3, 10 AM | 10,500 (+0%) Wed Nov 11, 4 AM | 10,300 (-2%) Thu Nov 5, 10 AM | 10,500 (+0%) Thu Nov 12 | Forecast within ±10% | Nov 2, 8:12 AM PST |
| Flathead River at Columbia Falls | 3,620 | 3,600 (-1%) Tue Nov 3, 10 AM | 3,620 (+0%) Thu Nov 12, 4 AM | 3,580 (-1%) Wed Nov 4, 4 AM | 3,620 (+0%) Thu Nov 12 | Forecast within ±10% | Nov 2, 8:11 AM PST |
Forecast values are the National Weather Service's own flow forecasts (NWS River Forecast Centers, via the National Water Prediction Service), shown only for gauges whose NWS forecast point lists the same USGS gauge number, and only when the forecast was issued in the last 36 hours. “Rise” or “drop” means the forecast goes 10% or more above or below the latest USGS reading at some point (the same ±10% rule as the 24-hour trend). Flowcast does not make or adjust forecasts, and the Fishable/Floatable status is never based on them. Each river page shows the day-by-day forecast. All states.