Snake River below Swan Falls Dam, ID
USGS Site No: 13172454 • Snake River • Ada 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:
- Snake River near Murphy ID 0.5 mi@if($nearby->currentReading) · 5,130 cfs@endif
- Boise River at Glenwood Bridge near Boise ID 28.9 mi@if($nearby->currentReading) · 1,970 cfs@endif
- Snake River below Cj Strike Dam near Grand View ID 29.1 mi@if($nearby->currentReading) · 5,910 cfs@endif
- Boise River South Channel at Eagle ID 29.5 mi@if($nearby->currentReading) · 1,260 cfs@endif
- Eagle Drain at Eagle, ID 30.6 mi@if($nearby->currentReading) · 27 cfs@endif
↑ Upstream on Snake River
Snake River below Cj Strike Dam near Grand View ID
Downstream on Snake River ↓
Snake River at Nyssa OR
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 | 5,830 | |
| 25th | Low threshold | 7,640 | |
| 50th (Median) | Normal (median) | 8,370 | |
| 75th | High threshold | 11,900 | |
| 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.
10th–95th historical
Day-of-year median
Recent discharge
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| Nov 4, 2025 | 7,130 | — |
| Nov 3, 2025 | 7,370 | — |
| Nov 2, 2025 | 7,210 | — |
| Nov 1, 2025 | 6,550 | — |
| Oct 31, 2025 | 7,270 | — |
| Oct 30, 2025 | 7,050 | — |
| Oct 29, 2025 | 6,970 | — |
| Oct 28, 2025 | 6,840 | — |
| Oct 27, 2025 | 7,290 | — |
| Oct 26, 2025 | 6,680 | — |
| Oct 25, 2025 | 7,030 | — |
| Oct 24, 2025 | 7,200 | — |
| Oct 23, 2025 | 6,890 | — |
| Oct 22, 2025 | 7,080 | — |
| Oct 21, 2025 | 6,880 | — |
| Oct 20, 2025 | 8,320 | — |
| Oct 19, 2025 | 8,080 | — |
| Oct 18, 2025 | 8,220 | — |
| Oct 17, 2025 | 8,310 | — |
| Oct 16, 2025 | 8,220 | — |
| Oct 15, 2025 | 8,260 | — |
| Oct 14, 2025 | 7,590 | — |
| Oct 13, 2025 | 7,810 | — |
| Oct 12, 2025 | 7,860 | — |
| Oct 11, 2025 | 7,030 | — |
| Oct 10, 2025 | 7,580 | — |
| Oct 9, 2025 | 7,970 | — |
| Oct 8, 2025 | 8,340 | — |
| Oct 7, 2025 | 8,300 | — |
| Oct 6, 2025 | 7,990 | — |
Station Information
- USGS Site No
- 13172454
- State
- ID
- County
- Ada County
- Coordinates
- 43.2494, -116.3838
- Drainage Area
- 41,900 mi²
- Datum (ft)
- 2,280.0
- HUC Code
- 17050103
Recent Extremes
- Max discharge
-
8,530 cfsJun 24, 2025
- Min discharge
-
4,530 cfsAug 11, 2025
Computed from the local daily-values archive.
Nearby Gauges
-
Snake River near Murphy IDVery Low0.5 mi · 5,130 cfs
-
Boise River at Glenwood Bridge near Boise IDNormal28.9 mi · 1,970 cfs
-
Snake River below Cj Strike Dam near Grand View IDNormal29.1 mi · 5,910 cfs
-
Boise River South Channel at Eagle IDNormal29.5 mi · 1,260 cfs
-
Eagle Drain at Eagle, IDVery Low30.6 mi · 27 cfs