Yaak River Near Troy Mount
USGS Site No: 12304500 • Yaak River • Lincoln County, MT
Yaak River Near Troy Mount on the Yaak River is currently at 1,770 cfs (Very High — 118th percentile for this date) . Gage height: 5.40 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for July 29 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 | 139 | |
| 25th | Low threshold | 171 | |
| 50th (Median) | Normal (median) | 239 | |
| 75th | High threshold | 308 | |
| 95th | Very High threshold | 536 |
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 | 1,650 | — |
| May 27, 2026 | 1,730 | — |
| May 26, 2026 | 1,430 | — |
| May 25, 2026 | 1,410 | — |
| May 24, 2026 | 1,370 | — |
| May 23, 2026 | 1,340 | — |
| May 22, 2026 | 1,330 | — |
| May 21, 2026 | 1,400 | — |
| May 20, 2026 | 1,430 | — |
| May 19, 2026 | 1,450 | — |
| May 18, 2026 | 1,530 | — |
| May 17, 2026 | 1,670 | — |
| May 16, 2026 | 1,860 | — |
| May 15, 2026 | 2,180 | — |
| Apr 20, 2026 | 1,700 | — |
| Apr 19, 2026 | 1,660 | — |
| Apr 18, 2026 | 1,700 | — |
| Apr 17, 2026 | 1,810 | — |
| Apr 16, 2026 | 1,980 | — |
| Apr 15, 2026 | 2,010 | — |
| Apr 14, 2026 | 1,940 | — |
| Apr 13, 2026 | 1,830 | — |
| Apr 12, 2026 | 1,700 | — |
| Apr 11, 2026 | 1,590 | — |
| Apr 10, 2026 | 1,560 | — |
| Apr 9, 2026 | 1,610 | — |
| Apr 8, 2026 | 1,640 | — |
| Apr 7, 2026 | 1,500 | — |
| Apr 6, 2026 | 1,360 | — |
| Apr 5, 2026 | 1,340 | — |
Station Information
- USGS Site No
- 12304500
- State
- MT
- County
- Lincoln County
- Coordinates
- 48.5617, -115.9702
- Drainage Area
- 792 mi²
- Datum (ft)
- 1,839.0
- HUC Code
- 17010103
Flood Stage Thresholds
- Action Stage
- 7.5 ft
- Flood Stage
- 8.0 ft
- Moderate Flood
- 9.0 ft
- Major Flood
- 10.0 ft
Currently 2.60 ft below flood stage.
Recent Extremes
- Max discharge
-
6,030 cfsDec 11, 2025
- Min discharge
-
72 cfsSep 29, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Kootenai River at Leonia, IDVery High5.3 mi · 29,800 cfs
-
Kootenai River Bel Moyie River near Bonners Ferry IDVery High14.0 mi · 31,000 cfs
-
Kootenai River Tribal Hatchery near Bonners FerryVery Low20.8 mi · 5,070 cfs
-
Pack River near Colburn IDUnknown26.2 mi · 0 cfs
-
Lightning Creek at Clark Fork IDVery High30.0 mi · 720 cfs