USGS Streamgage 06123030
Musselshell River ab Mud Creek near Shawmut, MT
Musselshell River ab Mud Creek near Shawmut, MT is USGS streamgage 06123030 in Montana, monitoring river discharge in hydrologic subbasin 10040201. It drains a watershed of about 1,518 square miles. Discharge records at this site go back to 1998. Typical flow runs near 62 cfs in July and 17 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 1,518 sq mi
- Gauge elevation
- 3,782 ft
- Subbasin (HUC-8)
- 10040201
- Coordinates
- 46.31899, -109.46055
- USGS site number
- 06123030
- Records begin
- 1998-06-01 (28 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 27 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 9 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| March | — | 9.2 | — | |
| April | 5 | 17 | 301 | |
| May | 14.8 | 114.7 | 1,104.1 | |
| June | 33.2 | 165.2 | 1,444.9 | |
| July | 16.2 | 62 | 452.9 | |
| August | 5.8 | 35.5 | 121.7 | |
| September | 4.6 | 36.8 | 135.8 | |
| October | 5.6 | 36.2 | 132 | |
| November | — | 59.5 | — |
All values in cubic feet per second (cfs).