Musselshell River Near Roundup Mount
USGS Site No: 06126500 • Musselshell River • Musselshell County, MT
Musselshell River Near Roundup Mount on the Musselshell River is currently at 207 cfs (High — 91th percentile for this date) . Gage height: 2.26 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 | 19 | |
| 25th | Low threshold | 36 | |
| 50th (Median) | Normal (median) | 62 | |
| 75th | High threshold | 98 | |
| 95th | Very High threshold | 232 | Today: 207 cfs |
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 | 199 | — |
| May 27, 2026 | 159 | — |
| May 26, 2026 | 170 | — |
| May 25, 2026 | 157 | — |
| May 24, 2026 | 168 | — |
| May 23, 2026 | 157 | — |
| May 22, 2026 | 192 | — |
| May 21, 2026 | 230 | — |
| May 20, 2026 | 266 | — |
| May 19, 2026 | 290 | — |
| May 18, 2026 | 287 | — |
| May 17, 2026 | 274 | — |
| May 16, 2026 | 231 | — |
| May 15, 2026 | 182 | — |
| Apr 20, 2026 | 55 | — |
| Apr 19, 2026 | 54 | — |
| Apr 18, 2026 | 54 | — |
| Apr 17, 2026 | 55 | — |
| Apr 16, 2026 | 56 | — |
| Apr 15, 2026 | 55 | — |
| Apr 14, 2026 | 55 | — |
| Apr 13, 2026 | 55 | — |
| Apr 12, 2026 | 54 | — |
| Apr 11, 2026 | 53 | — |
| Apr 10, 2026 | 54 | — |
| Apr 9, 2026 | 55 | — |
| Apr 8, 2026 | 58 | — |
| Apr 7, 2026 | 59 | — |
| Apr 6, 2026 | 62 | — |
| Apr 5, 2026 | 64 | — |
Station Information
- USGS Site No
- 06126500
- State
- MT
- County
- Musselshell County
- Coordinates
- 46.4277, -108.5701
- Drainage Area
- 3,998 mi²
- Datum (ft)
- 3,188.5
- HUC Code
- 10040202
Flood Stage Thresholds
- Flood Stage
- 10.0 ft
- Moderate Flood
- 10.5 ft
- Major Flood
- 11.0 ft
Currently 7.74 ft below flood stage.
Recent Extremes
- Max discharge
-
446 cfsMay 15, 2025
- Min discharge
-
31 cfsJan 27, 2026
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Musselshell River above Big Coulee Creek at Lavina MountVery High20.0 mi · 232 cfs
-
Musselshell River at Musselshell MountHigh22.9 mi · 131 cfs
-
Musselshell River above Mud Creek near Shawmut MountNormal43.1 mi · 85 cfs
-
Yellowstone River at Billings MountVery High43.6 mi · 21,900 cfs
-
Flatwillow Creek Near Mosby MountNormal45.9 mi · 9 cfs