Rivers in Alaska
Gulkana River at Sourdough
Below flood stage
6.65ftStage
Observed Tue, Sep 22, 10:15 PM UTC
- Flood stage
- 11.00 ft
- Forecast crest
- 6.93 ftWed, Sep 23, 6:00 PM UTC
- Record crest
- 16.03 ft1976
Flood stages and impacts
| Category | Stage |
|---|---|
| Minor flood | 11.00 ft |
| Action | 9.50 ft |
- 12.50 ftStage associated with flow (16900 cfs) having a recurrence interval of >50 years; major flooding would be expected on this and nearby streams
- 12.00 ftStage associated with flow (15200 cfs) having a recurrence interval of 20-40 years; moderate flooding would be expected on this and nearby streams
- 11.00 ftStage associated with a flow (11900 cfs) having a recurrence interval of ~10 years; minor flooding would be expected on this and nearby streams
- 9.50 ftBankfull -- stage associated with flow (7400 cfs) having a recurrence interval of ~2 years
Crest history
33 crests on NOAA’s list since 1973.
| # | Date | Stage |
|---|---|---|
| 1 | May 7, 1976 | 16.03 ft |
| 2 | May 5, 2009 | 14.64 ft |
| 3 | May 30, 2013 | 14.62 ft |
| 4 | October 10, 2006 | 12.00 ft |
| 5 | September 12, 1990 | 11.26 ft |
| 6 | May 4, 1989 | 10.88 ft |
| 7 | June 13, 2018 | 10.75 ft |
| 8 | August 26, 2006 | 10.48 ft |
| 9 | June 14, 2012 | 10.29 ft |
| 10 | June 24, 2020 | 10.09 ft |
| 11 | June 3, 1992 | 10.08 ft |
| 12 | June 2, 1977 | 10.07 ft |
| 13 | May 16, 1973 | 9.92 ft |
| 14 | June 4, 1975 | 9.66 ft |
| 15 | May 11, 2015 | 9.58 ft |
| 16 | May 9, 1978 | 9.54 ft |
| 17 | May 10, 2004 | 9.50 ft |
| 18 | August 22, 2002 | 9.41 ft |
| 19 | June 10, 1997 | 9.36 ft |
| 20 | May 24, 1991 | 8.94 ft |
| 21 | July 30, 2008 | 8.91 ft |
| 22 | May 25, 1974 | 8.86 ft |
| 23 | May 2, 2017 | 8.85 ft |
| 24 | May 4, 1993 | 8.69 ft |
| 25 | May 23, 2011 | 8.63 ft |
Most recent crests
- June 24, 2020: 10.09 ft
- May 9, 2019: 8.57 ft
- June 13, 2018: 10.75 ft
- May 2, 2017: 8.85 ft
- July 26, 2016: 8.52 ft
- May 11, 2015: 9.58 ft
- May 30, 2013: 14.62 ft
- June 14, 2012: 10.29 ft
- May 23, 2011: 8.63 ft
- July 25, 2010: 8.41 ft
Nearby
Upstream, downstream and the gauges around this one.
- UpstreamGulkana River at Paxson Lake Outlet
- DownstreamGulkana River at Richardson Highway Bridge
- Gakona River at Tok Cutoff Bridge
- Tazlina River at Richardson Hwy Bridge
- Klutina River at Copper Center
- Phelan Creek at base of Gulkana Glacier
- Maclaren River at Denali Hwy
- [INACTIVE] Little Nelchina River at Glenn Hwy
What this means
Forecasts by the Alaska Pacific River Forecast Center. Forecasts are issued routinely during the warm season, and as needed at other times of the year. Stage may be affected by ice. Flood stage levels are based on recurrence intervals and may not be representative of local impacts.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.