South F Flathead River above Twin C near Hungry Horse Mount
USGS Site No: 12359800 • Flathead River • Flathead County, MT
South F Flathead River above Twin C near Hungry Horse Mount on the Flathead River is currently at 13,600 cfs (Very High — 167th percentile for this date) . Gage height: 11.49 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 299 | |
| 25th | Low threshold | 334 | |
| 50th (Median) | Normal (median) | 448 | |
| 75th | High threshold | 699 | |
| 95th | Very High threshold | 1,650 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 13,300 | — |
| May 27, 2026 | 11,200 | — |
| May 26, 2026 | 8,810 | — |
| May 25, 2026 | 6,680 | — |
| May 24, 2026 | 4,930 | — |
| May 23, 2026 | 4,250 | — |
| May 22, 2026 | 4,240 | — |
| May 21, 2026 | 4,490 | — |
| May 20, 2026 | 4,640 | — |
| May 19, 2026 | 5,010 | — |
| May 18, 2026 | 5,700 | — |
| May 17, 2026 | 6,720 | — |
| May 16, 2026 | 8,190 | — |
| May 15, 2026 | 10,400 | — |
| Apr 20, 2026 | 3,650 | — |
| Apr 19, 2026 | 3,640 | — |
| Apr 18, 2026 | 3,870 | — |
| Apr 17, 2026 | 4,270 | — |
| Apr 16, 2026 | 4,750 | — |
| Apr 15, 2026 | 5,130 | — |
| Apr 14, 2026 | 5,410 | — |
| Apr 13, 2026 | 5,420 | — |
| Apr 12, 2026 | 4,930 | — |
| Apr 11, 2026 | 4,190 | — |
| Apr 10, 2026 | 3,880 | — |
| Apr 9, 2026 | 3,780 | — |
| Apr 8, 2026 | 3,710 | — |
| Apr 7, 2026 | 3,470 | — |
| Apr 6, 2026 | 3,080 | — |
| Apr 5, 2026 | 3,030 | — |
Station Information
- USGS Site No
- 12359800
- State
- MT
- County
- Flathead County
- Coordinates
- 47.9791, -113.5607
- Drainage Area
- 1,159 mi²
- Datum (ft)
- 3,575.0
- HUC Code
- 17010209
Recent Extremes
- Max discharge
-
13,300 cfsMay 28, 2026
- Min discharge
-
237 cfsSep 29, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Swan River Near Bigfork, MountVery High19.6 mi · 3,920 cfs
-
South F Flathead River near Columbia Falls MountVery High34.1 mi · 16,100 cfs
-
Flathead River Near Polson MountVery High37.9 mi · 39,400 cfs
-
Stillwater River at Lawrence Park, at KalispellVery High38.5 mi · 609 cfs
-
Flathead River at Columbia Falls MountVery High39.1 mi · 46,300 cfs