National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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KLAMATH RIVER - SEIAD VALLEY (SEIC1)
Latitude: 41.85º NLongitude: 123.23º WElevation: 1320 Feet
Location: Siskiyou County in CaliforniaRiver Group: North Coast
Monitor Stage: 13.0 FeetFlood Stage: 15.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025*
21,100
12.50
Dec 29, 2024
2024*
10,400***
8.61
Jan 28, 2024
2023*
9,370
8.15
Apr 30, 2023
2022*
5,130
5.79
Apr 16, 2022
2021*
4,860
5.61
Jan 13, 2021
 Historical High Stage/Flow Events (Period of Record - Jul 1951 to Present)** - Ranked by Flow
1965*
165,000
33.75
Dec 23, 1964
1974*
126,000
29.65
Jan 16, 1974
1956*
122,000
29.20
Dec 22, 1955
1997* 117,000 28.72 Jan 1, 1997
2006* 74,000 23.17 Dec 31, 2005
1982* 71,500 22.80 Dec 20, 1981
* Discharge affected by regulation or diversion
** Most recent continuous record back to Jul 1951 with segmented periods back to Oct 1912
*** Estimated
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ080)
Tonight: Mostly clear. Lows in the mid 30s to mid 40s. East winds around 5 mph.

Wednesday: Sunny. Highs in the lower to mid 60s. East winds around 5 mph.

Wednesday Night: Mostly clear. Lows in the mid 30s to mid 40s. East winds 5 to 10 mph.

Thursday: Sunny. Highs in the mid 50s to mid 60s. East winds 5 to 10 mph.

Thursday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the mid 30s to mid 40s. Southeast winds 5 to 10 mph.

Friday: Partly cloudy in the morning then becoming sunny. Highs in the mid 50s to lower 60s.

Friday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the mid 30s to mid 40s.

Saturday: Partly cloudy in the morning, then mostly cloudy with a chance of rain in the afternoon. Highs in the lower 50s to lower 60s.

Saturday Night: Mostly cloudy with a chance of rain. Lows in the lower to mid 40s.

Sunday and Sunday Night: Rain and snow likely. Highs in the mid 40s to mid 50s. Lows in the mid 30s to mid 40s.

Monday: Mostly cloudy with a chance of rain and snow. Highs in the lower to mid 40s.

Monday Night: Mostly cloudy with a chance of rain and snow. Lows in the lower to mid 30s.

Tuesday: Mostly cloudy with a chance of rain and snow. Highs in the lower to mid 40s.
Flood Impacts
33.75 FeetMajor flooding is occurring along the entire reach of the Klamath River in Siskiyou County. Much of Highway 96 is impassable.
28.0 FeetExpect considerable flooding along the Klamath River in Siskiyou County. Sections of Highway 96 are flooded.
20.0 FeetHighway 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.
15.0 FeetThe 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.
13.0 FeetThe Klamath River is nearing bankfull.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Medford Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.