Musselshell River at Harlowton Mount
USGS Site No: 06120500 • Musselshell River • Wheatland County, MT
Musselshell River at Harlowton Mount on the Musselshell River is currently at 127 cfs (High — 84th percentile for this date) . Gage height: 3.26 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 | 23 | |
| 25th | Low threshold | 50 | |
| 50th (Median) | Normal (median) | 72 | |
| 75th | High threshold | 100 | |
| 95th | Very High threshold | 160 | Today: 127 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 | 115 | — |
| May 27, 2026 | 99 | — |
| May 26, 2026 | 102 | — |
| May 25, 2026 | 99 | — |
| May 24, 2026 | 97 | — |
| May 23, 2026 | 107 | — |
| May 22, 2026 | 126 | — |
| May 21, 2026 | 129 | — |
| May 20, 2026 | 135 | — |
| May 19, 2026 | 164 | — |
| May 18, 2026 | 190 | — |
| May 17, 2026 | 216 | — |
| May 16, 2026 | 214 | — |
| May 15, 2026 | 218 | — |
| Apr 20, 2026 | 73 | — |
| Apr 19, 2026 | 85 | — |
| Apr 18, 2026 | 89 | — |
| Apr 17, 2026 | 94 | — |
| Apr 16, 2026 | 86 | — |
| Apr 15, 2026 | 86 | — |
| Apr 14, 2026 | 97 | — |
| Apr 13, 2026 | 90 | — |
| Apr 12, 2026 | 84 | — |
| Apr 11, 2026 | 84 | — |
| Apr 10, 2026 | 83 | — |
| Apr 9, 2026 | 81 | — |
| Apr 8, 2026 | 82 | — |
| Apr 7, 2026 | 82 | — |
| Apr 6, 2026 | 85 | — |
| Apr 5, 2026 | 90 | — |
Station Information
- USGS Site No
- 06120500
- State
- MT
- County
- Wheatland County
- Coordinates
- 46.4288, -109.8412
- Drainage Area
- 1,108 mi²
- Datum (ft)
- 4,165.9
- HUC Code
- 10040201
Flood Stage Thresholds
- Flood Stage
- 7.0 ft
Currently 3.74 ft below flood stage.
Recent Extremes
- Max discharge
-
493 cfsMay 13, 2025
- Min discharge
-
27 cfsSep 4, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Musselshell River above Mud Creek near Shawmut MountNormal19.7 mi · 85 cfs
-
Musselshell River near Martinsdale, MountVery High19.7 mi · 119 cfs
-
Shields River below Sf Shields River near Wilsall, MountUnknown35.9 mi · 203 cfs
-
Judith River Above Carr Creek Near Utica MountVery High37.6 mi · 71 cfs
-
Boulder River at Big Timber MountVery High41.4 mi · 2,340 cfs