USGS Streamgage 06209500
Rock Creek near Red Lodge, MT
Rock Creek near Red Lodge, MT is USGS streamgage 06209500 in Montana, monitoring river discharge in hydrologic subbasin 10070006. It drains a watershed of about 108 square miles. Discharge records at this site go back to 1999. Typical flow runs near 359.1 cfs in July and 31.6 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 108 sq mi
- Gauge elevation
- 6,393 ft
- Subbasin (HUC-8)
- 10070006
- Coordinates
- 45.08615, -109.32919
- USGS site number
- 06209500
- Records begin
- 1999-12-09 (27 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 | 21.8 | 30.6 | 38.6 | |
| February | 20.2 | 26.1 | 34.1 | |
| March | 20 | 24.8 | 32.8 | |
| April | 23.1 | 31.6 | 47.5 | |
| May | 66 | 132.1 | 380.2 | |
| June | 255.4 | 457.5 | 849.1 | |
| July | 232.5 | 359.1 | 691.5 | |
| August | 155.6 | 222.4 | 320.8 | |
| September | 102.8 | 135.4 | 198.3 | |
| October | 52.8 | 69.7 | 108.3 | |
| November | 36.6 | 49.3 | 64.6 | |
| December | 27.6 | 37 | 48.2 |
All values in cubic feet per second (cfs).