Tongue River at Ashland, Mount
USGS Site No: 06307662 • Tongue River • Rosebud County, MT
Tongue River at Ashland, Mount on the Tongue River is currently at 265 cfs (Normal — 58th percentile for this date) . Gage height: 10.62 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 | 0 | |
| 25th | Low threshold | 166 | |
| 50th (Median) | Normal (median) | 194 | |
| 75th | High threshold | 426 | Today: 265 cfs |
| 95th | Very High threshold | 0 |
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 | 270 | — |
| May 27, 2026 | 275 | — |
| May 26, 2026 | 289 | — |
| May 25, 2026 | 286 | — |
| May 24, 2026 | 280 | — |
| May 23, 2026 | 274 | — |
| May 22, 2026 | 272 | — |
| May 21, 2026 | 260 | — |
| May 20, 2026 | 255 | — |
| May 19, 2026 | 220 | — |
| May 18, 2026 | 213 | — |
| May 17, 2026 | 190 | — |
| May 16, 2026 | 168 | — |
| May 15, 2026 | 165 | — |
| Apr 20, 2026 | 119 | — |
| Apr 19, 2026 | 118 | — |
| Apr 18, 2026 | 121 | — |
| Apr 17, 2026 | 118 | — |
| Apr 16, 2026 | 117 | — |
| Apr 15, 2026 | 122 | — |
| Apr 14, 2026 | 122 | — |
| Apr 13, 2026 | 121 | — |
| Apr 12, 2026 | 122 | — |
| Apr 11, 2026 | 120 | — |
| Apr 10, 2026 | 117 | — |
| Apr 9, 2026 | 117 | — |
| Apr 8, 2026 | 119 | — |
| Apr 7, 2026 | 121 | — |
| Apr 6, 2026 | 125 | — |
| Apr 5, 2026 | 135 | — |
Station Information
- USGS Site No
- 06307662
- State
- MT
- County
- Rosebud County
- Coordinates
- 45.5978, -106.2749
- Drainage Area
- 2,900 mi²
- Datum (ft)
- 2,903.0
- HUC Code
- 10090102
Recent Extremes
- Max discharge
-
2,120 cfsJun 5, 2025
- Min discharge
-
42 cfsFeb 19, 2026
Computed from the local daily-values archive.
Nearby Gauges
-
Tongue River at Birney Day School Branch near Birney MountHigh15.6 mi · 310 cfs
-
Tongue River below Brandenberg Bridge near Ashland MountNormal16.9 mi · 201 cfs
-
Rosebud C Bel Lame Deer C near Lame Deer MountNormal21.2 mi · 14 cfs
-
Rosebud C at Reservation Bndry near Kirby MountHigh38.3 mi · 6 cfs
-
Tongue River at Tongue River Dam near Decker MountNormal39.7 mi · 271 cfs