USGS Streamgage 06139800
West Fork Beaver Creek near Rocky Boy, MT
West Fork Beaver Creek near Rocky Boy, MT is USGS streamgage 06139800 in Montana, monitoring river discharge in hydrologic subbasin 10050004. It drains a watershed of about 3 square miles. Discharge records at this site go back to 2001. Typical flow runs near 2.8 cfs in July and 2.5 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 3 sq mi
- Gauge elevation
- 4,650 ft
- Subbasin (HUC-8)
- 10050004
- Coordinates
- 48.17615, -109.64213
- USGS site number
- 06139800
- Records begin
- 2001-09-01 (25 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 24 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 | — | 1.3 | — | |
| February | — | 1.2 | — | |
| March | — | 2.3 | — | |
| April | — | 2.5 | — | |
| May | — | 12.5 | — | |
| June | — | 6.1 | — | |
| July | — | 2.8 | — | |
| August | — | 1.9 | — | |
| September | — | 0.9 | — | |
| October | — | 2.9 | — | |
| November | — | 1.9 | — | |
| December | — | 1.5 | — |
All values in cubic feet per second (cfs).