USGS Streamgage 06139900
Beaver Creek at Reservoir Bndry near Rocky Boy, MT
Beaver Creek at Reservoir Bndry near Rocky Boy, MT is USGS streamgage 06139900 in Montana, monitoring river discharge in hydrologic subbasin 10050004. It drains a watershed of about 16 square miles. Discharge records at this site go back to 2001. Typical flow runs near 5.5 cfs in July and 6.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 16 sq mi
- Gauge elevation
- 4,171 ft
- Subbasin (HUC-8)
- 10050004
- Coordinates
- 48.22408, -109.65227
- USGS site number
- 06139900
- Records begin
- 2001-07-01 (25 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 25 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 | — | 1.5 | — | |
| February | — | 1.4 | — | |
| March | — | 4.5 | — | |
| April | — | 6.8 | — | |
| May | — | 11.2 | — | |
| June | — | 13.9 | — | |
| July | — | 5.5 | — | |
| August | — | 3.6 | — | |
| September | — | 2.6 | — | |
| October | — | 2.6 | — | |
| November | — | 2.3 | — | |
| December | — | 1.5 | — |
All values in cubic feet per second (cfs).