USGS Streamgage 12301250
Tobacco River at Eureka, MT
Tobacco River at Eureka, MT is USGS streamgage 12301250 in Montana, monitoring river discharge in hydrologic subbasin 17010101. It drains a watershed of about 396 square miles. Discharge records at this site go back to 2015. Typical flow runs near 168.9 cfs in July and 304.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 396 sq mi
- Gauge elevation
- 2,563 ft
- Subbasin (HUC-8)
- 17010101
- Coordinates
- 48.87795, -115.05446
- USGS site number
- 12301250
- Records begin
- 2015-11-10 (11 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 10 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 | 53.3 | 85.5 | 128.5 | |
| February | 50.7 | 88.3 | 158.8 | |
| March | 57.3 | 118.8 | 402.8 | |
| April | 150.6 | 304.1 | 790.8 | |
| May | 373.9 | 670.9 | 1,450 | |
| June | 191.9 | 531.7 | 1,555 | |
| July | 75 | 168.9 | 540.7 | |
| August | 41.2 | 82.5 | 140.3 | |
| September | 54.8 | 81 | 105.8 | |
| October | 65.9 | 86.5 | 216.5 | |
| November | 70.8 | 96.4 | 313.3 | |
| December | 62.7 | 89 | 232.1 |
All values in cubic feet per second (cfs).