Sun River below Diversion Dam near Augusta Mount
USGS Site No: 06080900 • Sun River • Lewis and Clark County, MT
Sun River below Diversion Dam near Augusta Mount on the Sun River is currently at 3,420 cfs (High — 81th percentile for this date) . Gage height: 7.70 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 179 | |
| 25th | Low threshold | 591 | |
| 50th (Median) | Normal (median) | 1,500 | |
| 75th | High threshold | 2,350 | |
| 95th | Very High threshold | 5,810 | Today: 3,420 cfs |
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 | 2,710 | — |
| May 27, 2026 | 2,150 | — |
| May 26, 2026 | 1,540 | — |
| May 25, 2026 | 1,210 | — |
| May 24, 2026 | 729 | — |
| May 23, 2026 | 766 | — |
| May 22, 2026 | 1,030 | — |
| May 21, 2026 | 1,160 | — |
| May 20, 2026 | 1,130 | — |
| May 19, 2026 | 1,250 | — |
| May 18, 2026 | 1,370 | — |
| May 17, 2026 | 1,370 | — |
| May 16, 2026 | 820 | — |
| May 15, 2026 | 1,450 | — |
| Apr 20, 2026 | 1,040 | — |
| Apr 19, 2026 | 1,070 | — |
| Apr 18, 2026 | 1,040 | — |
| Apr 17, 2026 | 1,470 | — |
| Apr 16, 2026 | 1,650 | — |
| Apr 15, 2026 | 1,620 | — |
| Apr 14, 2026 | 1,710 | — |
| Apr 13, 2026 | 1,710 | — |
| Apr 12, 2026 | 1,520 | — |
| Apr 11, 2026 | 1,290 | — |
| Apr 10, 2026 | 1,170 | — |
| Apr 9, 2026 | 1,130 | — |
| Apr 8, 2026 | 1,100 | — |
| Apr 7, 2026 | 1,060 | — |
| Apr 6, 2026 | 1,070 | — |
| Apr 5, 2026 | 1,110 | — |
Station Information
- USGS Site No
- 06080900
- State
- MT
- County
- Lewis and Clark County
- Coordinates
- 47.6185, -112.6921
- Drainage Area
- 610 mi²
- Datum (ft)
- 4,363.3
- HUC Code
- 10030104
Recent Extremes
- Max discharge
-
2,710 cfsMay 28, 2026
- Min discharge
-
95 cfsSep 11, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
North Fork Sun River Near Augusta MountNormal7.9 mi · 1,780 cfs
-
South Fork Sun River Near Augusta MountVery High8.1 mi · 2,350 cfs
-
Sun River below Willow Creek near Augusta MountHigh15.9 mi · 3,700 cfs
-
Teton River below South Fork near Choteau MountNormal18.7 mi · 417 cfs
-
Sun River at Simms MountHigh36.4 mi · 3,140 cfs