Alsek River at Dry Bay near Yakutat AK: flow right now vs. normal
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—flow right now
—of typical for this month
—gage height
The Alsek River at Dry Bay near Yakutat AK gauge has averaged 45,013 cfs over 14 years of monthly records. Flow is usually highest in August (119,564 cfs) and lowest in March (7,902 cfs).
Typical flow by month
Highest in August (119,564 cfs), lowest in March (7,902 cfs).
Key figures
- Average flow
- 45,013 cfs
- Highest peak on record
- 364,000 cfs
- Year of that peak
- 2021
- Drainage area
- 11,417 sq mi
- Years of records
- 14
- Gauge elevation
- 34 ft
- River
- Alsek River
- County
- Yakutat City and Borough
- State
- Alaska
Monthly numbers
| Month | Average | Median | Lowest | Highest |
|---|---|---|---|---|
| Jan | 10,696 cfs | 10,850 cfs | 7,190 cfs | 13,500 cfs |
| Feb | 9,046 cfs | 8,802 cfs | 7,255 cfs | 12,100 cfs |
| Mar | 7,902 cfs | 7,870 cfs | 5,350 cfs | 11,000 cfs |
| Apr | 9,593 cfs | 9,180 cfs | 5,360 cfs | 17,050 cfs |
| May | 30,679 cfs | 29,500 cfs | 20,300 cfs | 50,400 cfs |
| Jun | 78,786 cfs | 78,600 cfs | 37,500 cfs | 105,000 cfs |
| Jul | 119,414 cfs | 117,500 cfs | 96,800 cfs | 143,000 cfs |
| Aug | 119,564 cfs | 117,500 cfs | 94,700 cfs | 150,000 cfs |
| Sep | 80,321 cfs | 80,125 cfs | 51,300 cfs | 109,000 cfs |
| Oct | 42,293 cfs | 43,050 cfs | 17,300 cfs | 101,000 cfs |
| Nov | 16,361 cfs | 14,725 cfs | 10,850 cfs | 27,000 cfs |
| Dec | 12,468 cfs | 12,750 cfs | 7,200 cfs | 18,800 cfs |
Monthly averages of daily flow over the gauge's record. Lowest and highest are the extreme monthly averages for that month.
How Alsek River at Dry Bay near Yakutat AK compares in Alaska
- Alsek River at Dry Bay near Yakutat AK ranks #6 of 86 gauges in Alaska in this dataset by average flow.
- That places it in the top 7% in Alaska by average flow.
- The median average flow of gauges in Alaska is 548 cfs.
- Among all 2,293 gauges in the dataset, Alsek River at Dry Bay near Yakutat AK ranks #12 by average flow.
Data: U.S. Geological Survey (USGS) (public domain, U.S. federal data).· Updated 2026-11-02 · Text generated from the data and checked against it.
Live values are provisional USGS data. Measurements only, not a safety assessment — for flood warnings see the National Weather Service. Official page: USGS 15129120.