Madison River above Powerplant near Mcallister Mount
USGS Site No: 06040800 • Madison River • Madison County, MT
Madison River above Powerplant near Mcallister Mount on the Madison River is currently at 244 cfs (Normal — 57th percentile for this date) . Gage height: 3.88 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 110 | |
| 25th | Low threshold | 122 | |
| 50th (Median) | Normal (median) | 149 | |
| 75th | High threshold | 473 | Today: 244 cfs |
| 95th | Very High threshold | 1,730 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 236 | — |
| May 27, 2026 | 230 | — |
| May 26, 2026 | 228 | — |
| May 25, 2026 | 234 | — |
| May 24, 2026 | 236 | — |
| May 23, 2026 | 229 | — |
| May 22, 2026 | 230 | — |
| May 21, 2026 | 232 | — |
| May 20, 2026 | 231 | — |
| May 19, 2026 | 233 | — |
| May 18, 2026 | 234 | — |
| May 17, 2026 | 235 | — |
| May 16, 2026 | 302 | — |
| May 15, 2026 | 594 | — |
| Apr 20, 2026 | 244 | — |
| Apr 19, 2026 | 243 | — |
| Apr 18, 2026 | 243 | — |
| Apr 17, 2026 | 241 | — |
| Apr 15, 2026 | 240 | — |
| Apr 14, 2026 | 238 | — |
| Apr 13, 2026 | 236 | — |
| Apr 12, 2026 | 236 | — |
| Apr 11, 2026 | 243 | — |
| Apr 10, 2026 | 242 | — |
| Apr 9, 2026 | 241 | — |
| Apr 8, 2026 | 240 | — |
| Apr 7, 2026 | 240 | — |
| Apr 6, 2026 | 239 | — |
| Apr 5, 2026 | 238 | — |
| Apr 4, 2026 | 239 | — |
Station Information
- USGS Site No
- 06040800
- State
- MT
- County
- Madison County
- Coordinates
- 45.4866, -111.6339
- Drainage Area
- 2,213 mi²
- Datum (ft)
- 4,690.0
- HUC Code
- 100200071501
Recent Extremes
- Max discharge
-
1,360 cfsMay 12, 2025
- Min discharge
-
97 cfsDec 16, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Madison River below Ennis Lake near Mcallister MountNormal0.3 mi · 1,440 cfs
-
Madison River Near Norris MountUnknown8.9 mi · 1,440 cfs
-
Madison River at Ennis, MountVery High10.5 mi · 1,460 cfs
-
Willow Creek Near Harrison MountLow17.1 mi · 13 cfs
-
Gallatin River Near Gallatin Gateway, MountVery High17.6 mi · 2,080 cfs