CNRFC - Hydrology - Observed River/Reservoir Conditions

End of River Group

KLAMATH RIVER - KLAMATH (KLMC1)

Latitude: 41.51º N	Longitude: 123.98º W	Elevation: 6 Feet
Location: Del Norte County in California		River Group: North Coast

Monitor Stage: 30.0 Feet

Flood Stage: 38.0 Feet

Danger Stage: 63.0 Feet

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

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	188,000	35.57	Dec 29, 2024
2024*	142,000	31.13	Jan 14, 2024
2023*	139,000	30.86	Dec 31, 2022
2022*	53,800	20.30	Jan 8, 2022
2021*	76,300	23.67	Jan 13, 2021
Historical High Stage/Flow Events (Period of Record - December 1861 to Present)** - Ranked by Flow
1965*	557,000	55.30	Dec 23, 1964
1974*	529,000	41.96	Jan 16, 1974
1997*	500,000***		Jan 01, 1997
1986*	459,000	36.76	Feb 18, 1986
1861*	450,000	60.00	Dec -- 1861
1890*	425,000	63.00	Feb --, 1890
1956*	425,000	49.70	Dec 22, 1955

* Discharge affected to unknown degree by regulation or diversion
** Most recent continuous record back to 1932 with segmented periods back to Dec 1861
*** Estimated

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ101)

Today: Sunny. Highs 60 to 75. Northwest wind 10 to 20 mph.

Tonight: Partly cloudy. Patchy fog overnight. Lows 46 to 56. West wind around 15 mph in the evening becoming light.

Saturday: Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs 56 to 66. Light winds becoming west around 5 mph in the afternoon.

Saturday Night: Partly cloudy. Patchy fog. Lows 46 to 56. Southwest wind around 5 mph.

Sunday: Partly cloudy. Patchy fog. Highs 56 to 66. Southwest wind around 5 mph.

Sunday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows 44 to 54.

Memorial Day: Mostly cloudy. Patchy fog. Chance of rain showers. Highs 54 to 64.

Monday Night: Mostly cloudy. Patchy fog. Rain likely. Lows 41 to 51.

Tuesday: Mostly cloudy in the morning then becoming partly cloudy. Patchy fog. Slight chance of rain. Highs 53 to 63.

Tuesday Night: Mostly clear. Slight chance of rain. Lows 43 to 53.

Wednesday through Thursday: Mostly clear. Highs 58 to 71. Lows 43 to 53.

Flood Impacts
66.0 Feet	Extensive and severe flooding can be expected from above Klamath Glen to the Pacific Ocean including the towns of Klamath and Klamath Glen and US Highway 101. The forecast level is over the top of the levee. Any persons living or working in areas protected by the levee should take appropriate action and move to higher ground.
65.5 Feet	Extensive and severe flooding can be expected from above Klamath Glen to the Pacific Ocean including the towns of Klamath and Klamath Glen and US Highway 101. The forecast level is at the top of the levee. Any persons living or working in areas protected by the levee should take appropriate action and move to higher ground. High tides and strong, onshore winds amplify effects.
65.0 Feet	Severe flooding is expected in the delta area, particularly US Highway 101 in the vicinity of Requa Road, the access road to Klamath Glen, and secondary roads. The forecast level is within 0.5 feet of top of levee. Any persons living or working in areas protected by the levee should take appropriate action and move to higher ground. High tides and strong onshore winds will amplify flooding effects.
64.0 Feet	Severe flooding is the delta area is likely, particularly US Highway 101 in the vicinity of Requa Road, the access road to Klamath Glen, and secondary roads. The forecast level is within 1.5 feet of the top of the levee. Any persons living or working in areas protected by the levee should be prepared to take appropriate action and move to higher ground. High tides and strong onshore winds will amplify flooding effects.
63.0 Feet	Severe flooding of the delta area below the levee. Most roads will be flooded and impassable, including US Highway 101 and numerous secondary roads. The forecast level is within 2.5 feet of the top of the levee protecting Klamath Glen. Any persons living or working in areas protected by the levee should be prepared to take appropriate action and move to higher ground. High tides and strong onshore winds will amplify flooding effects.
49.0 Feet	Extensive flooding along the river from Blue Creek downstream to the Pacific Ocean. Most roads in the area, including US Highway 101, Requa Rd, and the access road to Klamath Glen are likely to be flooded and impassable.
46.0 Feet	Numerous road closures are expected including US Highway 101 and secondary roads in the area. Significant flooding of many homes and businesses will occur. Loss of power is likely due to inundation of the transfer station.
42.0 Feet	Flooding of Highway 101 near Requa Rd, the access road to Klamath Glen, and adjacent low lying secondary roads near the delta is likely.
40.0 Feet	Flooding may occur on the access road to Klamath Glen and adjacent low lying secondary roads near the delta. Flooding will be amplified if coincident with high tides and strong, onshore winds.
38.0 Feet	Flooding of lowest lying areas is likely.
34.0 Feet	Flooding of lowest lying areas may occur.

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 Eureka 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.

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