Colville River at Umiat AK
USGS Site No: 15875000 • Colville River • North Slope Borough, AK
Colville River at Umiat AK on the Colville River is currently at 0 cfs (Unknown) . Gage height: 0.00 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 | 310 | |
| 25th | Low threshold | 407 | |
| 50th (Median) | Normal (median) | 750 | |
| 75th | High threshold | 1,070 | |
| 95th | Very High threshold | 2,130 |
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 15, 2026 | 8,710 | — |
| Jun 21, 2025 | 101,000 | — |
| Jun 20, 2025 | 117,000 | — |
| Jun 19, 2025 | 168,000 | — |
| Jun 18, 2025 | 266,000 | — |
| Jun 17, 2025 | 441,000 | — |
| Jun 16, 2025 | 423,000 | — |
| Jun 15, 2025 | 282,000 | — |
| Jun 14, 2025 | 152,000 | — |
| Jun 13, 2025 | 23,400 | — |
| Jun 12, 2025 | 2,660 | — |
| Jun 11, 2025 | 788 | — |
| Jun 10, 2025 | 335 | — |
| Jun 9, 2025 | 199 | — |
| Jun 8, 2025 | 161 | — |
| Jun 7, 2025 | 149 | — |
| Jun 6, 2025 | 139 | — |
| Jun 5, 2025 | 131 | — |
| Jun 4, 2025 | 124 | — |
| Jun 3, 2025 | 111 | — |
| Jun 2, 2025 | 86 | — |
| Jun 1, 2025 | 62 | — |
| May 31, 2025 | 43 | — |
| May 30, 2025 | 34 | — |
| May 29, 2025 | 29 | — |
| May 28, 2025 | 27 | — |
| May 27, 2025 | 25 | — |
| May 26, 2025 | 23 | — |
| May 25, 2025 | 22 | — |
| May 24, 2025 | 21 | — |
Station Information
- USGS Site No
- 15875000
- State
- AK
- County
- North Slope Borough
- Coordinates
- 69.3605, -152.1227
- Drainage Area
- 13,860 mi²
- Datum (ft)
- 206.8
- HUC Code
- 19060303
Flood Stage Thresholds
- Action Stage
- 57.5 ft
- Flood Stage
- 59.0 ft
Currently 59.00 ft below flood stage.
Recent Extremes
- Max discharge
-
441,000 cfsJun 17, 2025
- Min discharge
-
5 cfsApr 24, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.