USGS Streamgage 12332000
Middle Fork Rock Creek near Philipsburg, MT
Middle Fork Rock Creek near Philipsburg, MT is USGS streamgage 12332000 in Montana, monitoring river discharge in hydrologic subbasin 17010202. It drains a watershed of about 121 square miles. Discharge records at this site go back to 1937. Typical flow runs near 160.5 cfs in July and 67 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 121 sq mi
- Gauge elevation
- 5,453 ft
- Subbasin (HUC-8)
- 17010202
- Coordinates
- 46.18457, -113.50157
- USGS site number
- 12332000
- Records begin
- 1937-10-01 (89 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 88 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 | 21.6 | 31.2 | 48 | |
| February | 20.2 | 32.2 | 46.2 | |
| March | 24.6 | 34.6 | 52.9 | |
| April | 34.3 | 67 | 143 | |
| May | 149.1 | 300.2 | 636.3 | |
| June | 207.7 | 429.7 | 805.1 | |
| July | 76.8 | 160.5 | 281 | |
| August | 41.4 | 66.9 | 96.8 | |
| September | 35.3 | 49.1 | 69 | |
| October | 34.6 | 45.5 | 62.6 | |
| November | 30.2 | 40.3 | 61.3 | |
| December | 24.5 | 35 | 54.7 |
All values in cubic feet per second (cfs).