USGS Streamgage 12334510
Rock Creek near Clinton, MT
Rock Creek near Clinton, MT is USGS streamgage 12334510 in Montana, monitoring river discharge in hydrologic subbasin 17010202. It drains a watershed of about 889 square miles. Discharge records at this site go back to 1972. Typical flow runs near 568.5 cfs in July and 487.9 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 889 sq mi
- Gauge elevation
- 3,521 ft
- Subbasin (HUC-8)
- 17010202
- Coordinates
- 46.72234, -113.68306
- USGS site number
- 12334510
- Records begin
- 1972-06-01 (54 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 54 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 | 111.1 | 174.4 | 260.4 | |
| February | 126.4 | 179.2 | 263.9 | |
| March | 161 | 226.6 | 398.1 | |
| April | 251.8 | 487.9 | 966.3 | |
| May | 693.5 | 1,375.2 | 3,016.1 | |
| June | 660.7 | 1,468 | 3,050.7 | |
| July | 305.1 | 568.5 | 1,092.6 | |
| August | 176.7 | 287.3 | 449.6 | |
| September | 161.5 | 253.3 | 349.5 | |
| October | 180.4 | 243.5 | 315.3 | |
| November | 163 | 218.4 | 310.3 | |
| December | 113.8 | 184 | 271.9 |
All values in cubic feet per second (cfs).