USGS Streamgage 06043120
Gallatin River above Deer Creek, near Big Sky, MT
Gallatin River above Deer Creek, near Big Sky, MT is USGS streamgage 06043120 in Montana, monitoring river discharge in hydrologic subbasin 10020008. It drains a watershed of about 538 square miles. Discharge records at this site go back to 2019. Typical flow runs near 703.2 cfs in July and 319.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 538 sq mi
- Gauge elevation
- 5,880 ft
- Subbasin (HUC-8)
- 10020008
- Coordinates
- 45.29728, -111.21139
- USGS site number
- 06043120
- Records begin
- 2019-05-01 (7 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 7 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 | — | 215.8 | — | |
| February | — | 208.1 | — | |
| March | — | 221 | — | |
| April | — | 319.3 | — | |
| May | — | 1,231.4 | — | |
| June | — | 1,800 | — | |
| July | — | 703.2 | — | |
| August | — | 402.2 | — | |
| September | — | 312.9 | — | |
| October | — | 290.7 | — | |
| November | — | 260.9 | — | |
| December | — | 222.7 | — |
All values in cubic feet per second (cfs).