USGS Streamgage 06025250
Big Hole River at Maiden Rock near Divide, MT
Big Hole River at Maiden Rock near Divide, MT is USGS streamgage 06025250 in Montana, monitoring river discharge in hydrologic subbasin 10020004. It drains a watershed of about 2,199 square miles. Discharge records at this site go back to 1997. Typical flow runs near 932.3 cfs in July and 1,238.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 2,199 sq mi
- Gauge elevation
- 5,309 ft
- Subbasin (HUC-8)
- 10020004
- Coordinates
- 45.70127, -112.73597
- USGS site number
- 06025250
- Records begin
- 1997-10-01 (29 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 28 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 10 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| February | — | 420.9 | — | |
| March | 295.3 | 396.2 | 1,033.8 | |
| April | 555.1 | 1,238.2 | 2,626.7 | |
| May | 1,209.8 | 2,717.7 | 5,656.8 | |
| June | 1,353.7 | 3,247 | 6,054.7 | |
| July | 385.4 | 932.3 | 1,966.8 | |
| August | 215.5 | 342.3 | 649 | |
| September | 195.2 | 305.3 | 436.4 | |
| October | 250.9 | 409.8 | 553.3 | |
| November | — | 424 | — |
All values in cubic feet per second (cfs).