Thompson River Near Thompson Falls Mount
USGS Site No: 12389500 • Thompson River • Sanders County, MT
Thompson River Near Thompson Falls Mount on the Thompson River is currently at 640 cfs (Very High — 107th percentile for this date) . Gage height: 3.73 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 | 117 | |
| 25th | Low threshold | 133 | |
| 50th (Median) | Normal (median) | 169 | |
| 75th | High threshold | 190 | |
| 95th | Very High threshold | 288 |
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 | 630 | — |
| May 27, 2026 | 625 | — |
| May 26, 2026 | 590 | — |
| May 25, 2026 | 572 | — |
| May 24, 2026 | 561 | — |
| May 23, 2026 | 564 | — |
| May 22, 2026 | 577 | — |
| May 21, 2026 | 599 | — |
| May 20, 2026 | 611 | — |
| May 19, 2026 | 640 | — |
| May 18, 2026 | 682 | — |
| May 17, 2026 | 730 | — |
| May 16, 2026 | 773 | — |
| May 15, 2026 | 829 | — |
| Apr 20, 2026 | 787 | — |
| Apr 19, 2026 | 821 | — |
| Apr 18, 2026 | 864 | — |
| Apr 17, 2026 | 920 | — |
| Apr 16, 2026 | 990 | — |
| Apr 15, 2026 | 1,030 | — |
| Apr 14, 2026 | 1,060 | — |
| Apr 13, 2026 | 1,050 | — |
| Apr 12, 2026 | 964 | — |
| Apr 11, 2026 | 905 | — |
| Apr 10, 2026 | 887 | — |
| Apr 9, 2026 | 889 | — |
| Apr 8, 2026 | 878 | — |
| Apr 7, 2026 | 829 | — |
| Apr 6, 2026 | 797 | — |
| Apr 5, 2026 | 810 | — |
Station Information
- USGS Site No
- 12389500
- State
- MT
- County
- Sanders County
- Coordinates
- 47.5919, -115.2295
- Drainage Area
- 638 mi²
- Datum (ft)
- 2,430.0
- HUC Code
- 17010213
Flood Stage Thresholds
- Action Stage
- 6.5 ft
- Flood Stage
- 7.0 ft
Currently 3.27 ft below flood stage.
Recent Extremes
- Max discharge
-
2,330 cfsMar 22, 2026
- Min discharge
-
90 cfsSep 27, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Prospect Creek at Thompson Falls MountVery High5.9 mi · 321 cfs
-
Clark Fork Near Plains MountVery High20.7 mi · 59,600 cfs
-
St. Regis River Near St. Regis, MountVery High21.0 mi · 708 cfs
-
Clark Fork at St. Regis MountVery High21.1 mi · 22,300 cfs
-
Sf Coeur D Alene River above Deadman Gulch near Mullan IDVery High26.4 mi · 101 cfs