USGS Streamgage 06040050
Madison River at Ennis, MT
Madison River at Ennis, MT is USGS streamgage 06040050 in Montana, monitoring river discharge in hydrologic subbasin 10020007. It drains a watershed of about 1,722 square miles. Discharge records at this site go back to 2025.
Gauge details
- State
- Montana
- Drainage area
- 1,722 sq mi
- Gauge elevation
- 4,931 ft
- Subbasin (HUC-8)
- 10020007
- Coordinates
- 45.34756, -111.72246
- USGS site number
- 06040050
- Records begin
- 2025-07-24 (1 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 1 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 5 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| July | — | 1,226.7 | — | |
| August | — | 1,087.4 | — | |
| September | — | 1,051.5 | — | |
| October | — | 1,029.4 | — | |
| November | — | 950.6 | — |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Madison River ab powerplant near McAllister, MT
- Madison River below Ennis Lake near McAllister, MT
- Madison River near Norris, MT
- Firehole River at Old Faithful, YNP
- Firehole River near West Yellowstone, MT
- Tantalus Creek at Norris Junction, YNP
- Gibbon River at Madison Jct, YNP
- Madison River near West Yellowstone, MT