Kootenai River at Porthill ID Total Flow
USGS Site No: 12322001 • Kootenai River • Boundary County, ID
Current reading not available.
Nearby gauges with live readings
This gauge isn't reporting right now. These nearby USGS gauges are currently active:
- Kootenai River at Porthill ID 0.3 mi@if($nearby->currentReading) · 30,800 cfs@endif
- Boundary Creek near Porthill ID 3.0 mi@if($nearby->currentReading) · 490 cfs@endif
- Moyie River at Eastport ID 14.7 mi@if($nearby->currentReading) · 2,090 cfs@endif
- Kootenai River Tribal Hatchery near Bonners Ferry 21.3 mi@if($nearby->currentReading) · 5,070 cfs@endif
- Kootenai River Bel Moyie River near Bonners Ferry ID 25.0 mi@if($nearby->currentReading) · 31,000 cfs@endif
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 | 4,700 | |
| 25th | Low threshold | 5,400 | |
| 50th (Median) | Normal (median) | 6,480 | |
| 75th | High threshold | 14,500 | |
| 95th | Very High threshold | 25,000 |
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.
10th–95th historical
Day-of-year median
Recent discharge
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 29,500 | — |
| May 27, 2026 | 28,400 | — |
| May 26, 2026 | 19,600 | — |
| May 25, 2026 | 16,300 | — |
| May 24, 2026 | 16,200 | — |
| May 23, 2026 | 16,000 | — |
| May 22, 2026 | 16,100 | — |
| May 20, 2026 | 16,400 | — |
| May 19, 2026 | 16,700 | — |
| May 18, 2026 | 17,400 | — |
| May 17, 2026 | 18,100 | — |
| May 16, 2026 | 18,900 | — |
| May 15, 2026 | 20,600 | — |
| Apr 20, 2026 | 25,300 | — |
| Apr 19, 2026 | 25,300 | — |
| Apr 18, 2026 | 25,800 | — |
| Apr 17, 2026 | 26,300 | — |
| Apr 16, 2026 | 27,200 | — |
| Apr 15, 2026 | 27,100 | — |
| Apr 14, 2026 | 27,100 | — |
| Apr 13, 2026 | 26,500 | — |
| Apr 12, 2026 | 25,400 | — |
| Apr 11, 2026 | 25,200 | — |
| Apr 10, 2026 | 25,200 | — |
| Apr 9, 2026 | 25,400 | — |
| Apr 8, 2026 | 25,400 | — |
| Apr 7, 2026 | 24,500 | — |
| Apr 6, 2026 | 24,800 | — |
| Apr 5, 2026 | 24,900 | — |
| Apr 4, 2026 | 25,100 | — |
Station Information
- USGS Site No
- 12322001
- State
- ID
- County
- Boundary County
- Coordinates
- 49.0000, -116.5038
- Drainage Area
- 13,700 mi²
- HUC Code
- 17010104
Recent Extremes
- Max discharge
-
44,300 cfsDec 12, 2025
- Min discharge
-
4,290 cfsOct 12, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Kootenai River at Porthill IDVery High0.3 mi · 30,800 cfs
-
Boundary Creek near Porthill IDVery High3.0 mi · 490 cfs
-
Moyie River at Eastport IDVery High14.7 mi · 2,090 cfs
-
Kootenai River Tribal Hatchery near Bonners FerryLow21.3 mi · 5,070 cfs
-
Kootenai River Bel Moyie River near Bonners Ferry IDVery High25.0 mi · 31,000 cfs