USGS Streamgage 06183450
Big Muddy Creek near Antelope, MT
Big Muddy Creek near Antelope, MT is USGS streamgage 06183450 in Montana, monitoring river discharge in hydrologic subbasin 10060006. It drains a watershed of about 955 square miles. Discharge records at this site go back to 1978. Typical flow runs near 6.5 cfs in July and 34.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 955 sq mi
- Gauge elevation
- 1,978 ft
- Subbasin (HUC-8)
- 10060006
- Coordinates
- 48.6729, -104.51209
- USGS site number
- 06183450
- Records begin
- 1978-10-01 (48 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 47 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 0.2 | 2 | 7 | |
| February | 0.1 | 2.1 | 54.5 | |
| March | 2.7 | 20.7 | 394.8 | |
| April | 10.3 | 34.8 | 251.4 | |
| May | 6 | 19.7 | 71.5 | |
| June | 1.4 | 11.2 | 83.9 | |
| July | 0.3 | 6.5 | 48.1 | |
| August | 0.1 | 2.6 | 17.7 | |
| September | 0.1 | 2.3 | 13.7 | |
| October | 0.5 | 5.2 | 17.5 | |
| November | 2.5 | 6.2 | 13.6 | |
| December | 1.2 | 4.3 | 8 |
All values in cubic feet per second (cfs).