Klamath River near Seiad Valley
California — Water Level & Flood Stage
Located in Siskiyou County, California on the Klamath River. Live water level data from USGS gauge 11520500, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
28 ft
111,100 cfs
Moderate Flood
20 ft
54,620 cfs
Minor Flood
15 ft
29,700 cfs
Action Stage
13 ft
22,000 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
33.75 ft
Major flooding is occurring along the entire reach of the Klamath River in Siskiyou County. Much of Highway 96 is impassable.
28 ft
Expect considerable flooding along the Klamath River in Siskiyou County. Sections of Highway 96 are flooded.
20 ft
Highway 96 innundated in low-lying spots along the Klamath River in Siskiyou County. Flooding is also likely at the confluence with the Scott River and the confluence with Indian Creek.
15 ft
The Klamath River is at flood stage. The Klamath River begins to flow out of its banks in some areas. Some low-lying structures may be flooded.
13 ft
The Klamath River is nearing bankfull.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 22, 1964 | 33.75 ft | 165,000 cfs |
| Dec 22, 1964 | 33.75 ft | 165,000 cfs |
| Jan 15, 1974 | 29.65 ft | 126,000 cfs |
| Jan 15, 1974 | 29.65 ft | 126,000 cfs |
| Dec 21, 1955 | 29.2 ft | 122,000 cfs |
About This Gauge
USGS Site
NWS LID
SEIC1
River
Klamath River
County
Siskiyou, CA
Coordinates
41.8537°N, 123.2323°W
Get Flood Alerts for Klamath River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Klamath River near Seiad Valley?
The Klamath River near Seiad Valley gauge is maintained by USGS (site 11520500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Klamath River near Seiad Valley?
The NWS-defined flood stage for Klamath River near Seiad Valley is 15 feet. Action stage begins at 13 feet. Moderate flooding starts at 20 feet, and major flooding at 28 feet.
How do I get alerts when Klamath River rises?
Download StormCast free on Google Play, go to River Gauges, and add Klamath River near Seiad Valley to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Klamath River near Seiad Valley gauge located?
The gauge is located in Siskiyou County, California at coordinates 41.8537°N, 123.2323°W. USGS site number: 11520500. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey