Clark Fork Near Plains Mount
USGS Site No: 12389000 • Clark Fork • Sanders County, MT
Clark Fork Near Plains Mount on the Clark Fork is currently at 59,600 cfs (Very High — 119th percentile for this date) . Gage height: 12.11 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 | 6,460 | |
| 25th | Low threshold | 8,050 | |
| 50th (Median) | Normal (median) | 10,800 | |
| 75th | High threshold | 13,600 | |
| 95th | Very High threshold | 17,500 |
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 | 49,400 | — |
| May 27, 2026 | 42,700 | — |
| May 26, 2026 | 40,100 | — |
| May 25, 2026 | 38,200 | — |
| May 24, 2026 | 38,100 | — |
| May 23, 2026 | 38,600 | — |
| May 22, 2026 | 39,500 | — |
| May 21, 2026 | 40,900 | — |
| May 20, 2026 | 44,400 | — |
| May 19, 2026 | 48,300 | — |
| May 18, 2026 | 50,400 | — |
| May 17, 2026 | 52,900 | — |
| May 16, 2026 | 55,900 | — |
| May 15, 2026 | 57,700 | — |
| Apr 20, 2026 | 28,700 | — |
| Apr 19, 2026 | 29,500 | — |
| Apr 18, 2026 | 30,400 | — |
| Apr 17, 2026 | 31,500 | — |
| Apr 16, 2026 | 32,300 | — |
| Apr 15, 2026 | 32,800 | — |
| Apr 14, 2026 | 32,900 | — |
| Apr 13, 2026 | 32,000 | — |
| Apr 12, 2026 | 30,500 | — |
| Apr 11, 2026 | 29,500 | — |
| Apr 10, 2026 | 29,300 | — |
| Apr 9, 2026 | 28,700 | — |
| Apr 8, 2026 | 27,900 | — |
| Apr 7, 2026 | 27,400 | — |
| Apr 6, 2026 | 27,500 | — |
| Apr 5, 2026 | 28,000 | — |
Station Information
- USGS Site No
- 12389000
- State
- MT
- County
- Sanders County
- Coordinates
- 47.4292, -114.8565
- Drainage Area
- 19,964 mi²
- Datum (ft)
- 2,449.1
- HUC Code
- 17010213
Flood Stage Thresholds
- Action Stage
- 15.0 ft
- Flood Stage
- 16.0 ft
- Moderate Flood
- 18.0 ft
- Major Flood
- 19.5 ft
Currently 3.89 ft below flood stage.
Recent Extremes
- Max discharge
-
57,700 cfsMay 15, 2026
- Min discharge
-
6,160 cfsOct 4, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Flathead River at Perma MountVery High13.4 mi · 37,000 cfs
-
Clark Fork at St. Regis MountVery High13.9 mi · 22,300 cfs
-
St. Regis River Near St. Regis, MountVery High15.5 mi · 708 cfs
-
Thompson River Near Thompson Falls MountVery High20.7 mi · 640 cfs
-
Prospect Creek at Thompson Falls MountVery High25.7 mi · 321 cfs