North Fork Flathead River in Montana
Around here
Around North Fork Flathead River
Before you go
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
North Fork Flathead River is a 58.0 mile river. Streamflow is measured at the USGS gauge N F Flathead River nr Columbia Falls MT (site 12355500). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1940 to 2026
North Fork Flathead River typically runs highest in May, at a median 9,320 cfs, and lowest in February, at 643 cfs. The highest flow on record for any single day is 58,000 cfs, in 1964.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 662 | 517 to 900 |
| February | 643 | 511 to 830 |
| March | 724 | 566 to 1,130 |
| April | 2,805 | 1,570 to 3,905 |
| May | 9,320 | 6,570 to 12,900 |
| June | 9,010 | 6,090 to 12,600 |
| July | 3,290 | 2,370 to 5,050 |
| August | 1,440 | 1,100 to 1,760 |
| September | 965 | 810 to 1,195 |
| October | 902 | 730 to 1,240 |
| November | 933 | 726 to 1,390 |
| December | 758 | 605 to 1,120 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 87 years of record. Statistics published by the US Geological Survey for N F Flathead River nr Columbia Falls MT (site 12355500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show North Fork Flathead River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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