Missouri River at Toston Mount
USGS Site No: 06054500 • Missouri River • Broadwater County, MT
Missouri River at Toston Mount on the Missouri River is currently at 4,230 cfs (Very Low — 7th percentile for this date) . Gage height: 4.59 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 6,180 | Today: 4,230 cfs |
| 25th | Low threshold | 8,750 | |
| 50th (Median) | Normal (median) | 12,600 | |
| 75th | High threshold | 17,000 | |
| 95th | Very High threshold | 26,000 |
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 | 3,520 | — |
| May 27, 2026 | 3,220 | — |
| May 26, 2026 | 2,950 | — |
| May 25, 2026 | 2,990 | — |
| May 24, 2026 | 3,200 | — |
| May 23, 2026 | 3,510 | — |
| May 22, 2026 | 3,770 | — |
| May 21, 2026 | 4,040 | — |
| May 20, 2026 | 4,430 | — |
| May 19, 2026 | 4,920 | — |
| May 18, 2026 | 5,180 | — |
| May 17, 2026 | 5,270 | — |
| May 16, 2026 | 5,570 | — |
| May 15, 2026 | 5,700 | — |
| Apr 20, 2026 | 4,110 | — |
| Apr 19, 2026 | 4,240 | — |
| Apr 18, 2026 | 4,390 | — |
| Apr 17, 2026 | 4,580 | — |
| Apr 16, 2026 | 4,740 | — |
| Apr 15, 2026 | 4,700 | — |
| Apr 14, 2026 | 4,770 | — |
| Apr 13, 2026 | 4,620 | — |
| Apr 12, 2026 | 4,330 | — |
| Apr 11, 2026 | 4,180 | — |
| Apr 10, 2026 | 4,100 | — |
| Apr 9, 2026 | 4,150 | — |
| Apr 8, 2026 | 4,080 | — |
| Apr 7, 2026 | 4,120 | — |
| Apr 6, 2026 | 4,200 | — |
| Apr 5, 2026 | 4,400 | — |
Station Information
- USGS Site No
- 06054500
- State
- MT
- County
- Broadwater County
- Coordinates
- 46.1466, -111.4203
- Drainage Area
- 14,641 mi²
- Datum (ft)
- 3,905.7
- HUC Code
- 10030101
Flood Stage Thresholds
- Action Stage
- 10.0 ft
- Flood Stage
- 10.5 ft
- Moderate Flood
- 11.0 ft
- Major Flood
- 12.0 ft
Currently 5.91 ft below flood stage.
Recent Extremes
- Max discharge
-
11,800 cfsMay 15, 2025
- Min discharge
-
1,200 cfsAug 25, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Gallatin River at Logan MountLow18.0 mi · 1,620 cfs
-
Jefferson River Near Three Forks MountVery Low19.2 mi · 1,760 cfs
-
Boulder River Near Boulder, MountLow32.4 mi · 150 cfs
-
Willow Creek Near Harrison MountVery Low33.1 mi · 13 cfs
-
East Gallatin River above Water Reclamation Fa near Bozeman MountVery Low33.7 mi · 100 cfs