Total streamflow across the
Flathead River
was last observed at
38,350
cfs, and is expected to yield approximately
76,066
acre-ft of water today; about 163%
of normal.
River levels are high.
Average streamflow for this time of year is
23,562 cfs,
with recent peaks last observed
on
2012-06-27 when daily discharge volume was observed at
165,650 cfs.
Maximum discharge along the river is currently at the
Flathead River At Perma Mt
reporting a streamflow rate of 14,500 cfs.
This is also the highest stage along the Flathead River, with a gauge stage of
11.07 ft at this location.
This river is monitored from 4 different streamgauging stations along the Flathead River, the highest being situated at an altitude of 3,983 ft, the
Flathead River At Flathead British Columbia.
| Last Updated | 2026-01-06 |
| Discharge Volume | 76,066 ACRE-FT |
| Streamflow |
38,350.0 cfs
-612.0 cfs (-1.57%) |
| Percent of Normal | 162.76% |
| Maximum |
165,650.0 cfs
2012-06-27 |
| Seasonal Avg | 23,562 cfs |
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Flathead River At Flathead British Columbia
USGS 12355000 |
712 cfs | 5.24 ft | 13.2 | |||||
|
Flathead River At Columbia Falls Mt
USGS 12363000 |
9450 cfs | 6.04 ft | 0 | |||||
|
Flathead River Near Polson Mt
USGS 12372000 |
14400 cfs | 8.1 ft | 0 | |||||
|
Flathead River At Perma Mt
USGS 12388700 |
14500 cfs | 11.07 ft | 0.69 |
The Flathead River (Salish: ntx̣ʷetkʷ, ntx̣ʷe ), in the northwestern part of the U.S. state of Montana, originates in the Canadian Rockies to the north of Glacier National Park and flows southwest into Flathead Lake, then after a journey of 158 miles (254 km), empties into the Clark Fork. The river is part of the Columbia River drainage basin, as the Clark Fork is a tributary of the Pend Oreille River, a Columbia River tributary. With a drainage basin extending over 8,795 square miles (22,780 km2) and an average discharge of 11,380 cubic feet per second (322 m3/s), the Flathead is the largest tributary of the Clark Fork and constitutes over half of its flow.