USGS Streamgage 06076690
Smith River near Ft Logan, MT
Smith River near Ft Logan, MT is USGS streamgage 06076690 in Montana, monitoring river discharge in hydrologic subbasin 10030103. It drains a watershed of about 845 square miles. Discharge records at this site go back to 1977. Typical flow runs near 135.5 cfs in July and 139.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 845 sq mi
- Gauge elevation
- 4,391 ft
- Subbasin (HUC-8)
- 10030103
- Coordinates
- 46.7958, -111.17856
- USGS site number
- 06076690
- Records begin
- 1977-10-01 (49 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 49 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 | 46.7 | 78.2 | 126.5 | |
| February | 46.9 | 90 | 154.2 | |
| March | 71.3 | 120.3 | 248.2 | |
| April | 83.7 | 139.2 | 340.1 | |
| May | 94.5 | 229.5 | 615.4 | |
| June | 75.4 | 256.8 | 768.1 | |
| July | 42 | 135.5 | 371.2 | |
| August | 30.7 | 66.8 | 124.9 | |
| September | 46.6 | 85.3 | 162.8 | |
| October | 67.2 | 103.3 | 155.4 | |
| November | 55.2 | 95.2 | 144.2 | |
| December | 46.3 | 81 | 136 |
All values in cubic feet per second (cfs).