USGS Streamgage 12323600
Silver Bow Creek at Opportunity, MT
Silver Bow Creek at Opportunity, MT is USGS streamgage 12323600 in Montana, monitoring river discharge in hydrologic subbasin 17010201. It drains a watershed of about 343 square miles. Discharge records at this site go back to 1988. Typical flow runs near 33 cfs in July and 65.4 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 343 sq mi
- Gauge elevation
- 4,926 ft
- Subbasin (HUC-8)
- 17010201
- Coordinates
- 46.10776, -112.80528
- USGS site number
- 12323600
- Records begin
- 1988-07-01 (38 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 38 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 | 22.6 | 32 | 48 | |
| February | 24.3 | 34 | 53.4 | |
| March | 30.7 | 47 | 86.3 | |
| April | 39.8 | 65.4 | 113 | |
| May | 43.4 | 93.8 | 212.9 | |
| June | 35.7 | 82.6 | 243.6 | |
| July | 17.4 | 33 | 99.2 | |
| August | 12.3 | 21.2 | 50.6 | |
| September | 18.1 | 28.5 | 48.4 | |
| October | 23.2 | 37.4 | 53.4 | |
| November | 24.5 | 37.6 | 53.6 | |
| December | 22.6 | 32.9 | 47.8 |
All values in cubic feet per second (cfs).