Big Wood River near Ketchum ID
USGS Site No: 13135500 • Big Wood River • Blaine County, ID
Big Wood River near Ketchum ID on the Big Wood River is currently at 408 cfs (Very High — 123th percentile for this date) . Gage height: 6.31 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 | 49 | |
| 25th | Low threshold | 54 | |
| 50th (Median) | Normal (median) | 63 | |
| 75th | High threshold | 74 | |
| 95th | Very High threshold | 106 |
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 | 438 | — |
| May 27, 2026 | 428 | — |
| May 26, 2026 | 382 | — |
| May 25, 2026 | 339 | — |
| May 24, 2026 | 299 | — |
| May 23, 2026 | 281 | — |
| May 22, 2026 | 282 | — |
| May 20, 2026 | 293 | — |
| May 19, 2026 | 318 | — |
| May 18, 2026 | 357 | — |
| May 17, 2026 | 408 | — |
| May 16, 2026 | 456 | — |
| May 15, 2026 | 518 | — |
| Apr 20, 2026 | 188 | — |
| Apr 19, 2026 | 187 | — |
| Apr 18, 2026 | 195 | — |
| Apr 17, 2026 | 209 | — |
| Apr 16, 2026 | 235 | — |
| Apr 15, 2026 | 253 | — |
| Apr 14, 2026 | 261 | — |
| Apr 13, 2026 | 296 | — |
| Apr 12, 2026 | 327 | — |
| Apr 11, 2026 | 328 | — |
| Apr 10, 2026 | 273 | — |
| Apr 9, 2026 | 255 | — |
| Apr 8, 2026 | 246 | — |
| Apr 7, 2026 | 225 | — |
| Apr 6, 2026 | 203 | — |
| Apr 5, 2026 | 194 | — |
| Apr 4, 2026 | 195 | — |
Station Information
- USGS Site No
- 13135500
- State
- ID
- County
- Blaine County
- Coordinates
- 43.7863, -114.4251
- Drainage Area
- 137 mi²
- Datum (ft)
- 6,225.0
- HUC Code
- 17040219
Flood Stage Thresholds
- Action Stage
- 7.5 ft
- Flood Stage
- 8.0 ft
- Moderate Flood
- 9.0 ft
- Major Flood
- 10.0 ft
Currently 1.69 ft below flood stage.
Recent Extremes
- Max discharge
-
654 cfsMay 11, 2025
- Min discharge
-
36 cfsDec 29, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Nf Big Wood River near Sawtooth Nra Hq near Ketchum IDVery High0.3 mi · 196 cfs
-
Trail Creek near Sun Valley, IDVery High6.7 mi · 206 cfs
-
Warm Springs Creek at Gates Road near Ketchum, IDVery High7.2 mi · 144 cfs
-
Big Wood River at Ketchum, IDUnknown7.2 mi · 0 cfs
-
Trail Creek at Ketchum IDVery High8.4 mi · 189 cfs