Slate C at Coldfoot AK
USGS Site No: 15564879 • Yukon-Koyukuk Census Area, AK
Slate C at Coldfoot AK is currently at 322 cfs (Very High — 118th percentile for this date) . Gage height: 15.39 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 27 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 | 7 | |
| 25th | Low threshold | 14 | |
| 50th (Median) | Normal (median) | 37 | |
| 75th | High threshold | 54 | |
| 95th | Very High threshold | 98 |
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 | 320 | — |
| May 27, 2026 | 318 | — |
| May 26, 2026 | 374 | — |
| May 25, 2026 | 343 | — |
| May 24, 2026 | 330 | — |
| May 23, 2026 | 368 | — |
| May 22, 2026 | 289 | — |
| May 21, 2026 | 212 | — |
| May 20, 2026 | 156 | — |
| May 19, 2026 | 104 | — |
| May 18, 2026 | 69 | — |
| May 17, 2026 | 47 | — |
| May 16, 2026 | 27 | — |
| May 15, 2026 | 19 | — |
| Dec 9, 2025 | 19 | — |
| Dec 8, 2025 | 20 | — |
| Dec 7, 2025 | 21 | — |
| Dec 6, 2025 | 21 | — |
| Dec 5, 2025 | 21 | — |
| Dec 4, 2025 | 21 | — |
| Dec 3, 2025 | 22 | — |
| Dec 2, 2025 | 22 | — |
| Dec 1, 2025 | 23 | — |
| Nov 30, 2025 | 23 | — |
| Nov 29, 2025 | 24 | — |
| Nov 28, 2025 | 25 | — |
| Nov 27, 2025 | 25 | — |
| Nov 26, 2025 | 25 | — |
| Nov 25, 2025 | 25 | — |
| Nov 24, 2025 | 25 | — |
Station Information
- USGS Site No
- 15564879
- State
- AK
- County
- Yukon-Koyukuk Census Area
- Coordinates
- 67.2544, -150.1772
- Drainage Area
- 73 mi²
- Datum (ft)
- 1,046.6
- HUC Code
- 19090101
Flood Stage Thresholds
- Action Stage
- 17.5 ft
- Flood Stage
- 18.7 ft
- Moderate Flood
- 20.2 ft
Currently 3.31 ft below flood stage.
Recent Extremes
- Max discharge
-
3,870 cfsAug 26, 2025
- Min discharge
-
4 cfsApr 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.