Please Note: 1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.
2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
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*
159,000
32.81
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
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 innundation 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. Flooding will be amplified if coincident with high tides and strong onshore winds.
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.
Official 7 Day National Weather Service Forecast (CAZ101)
Tonight: Partly cloudy early in the evening then becoming mostly cloudy. Lows 32 to 42. East wind around 5 mph.
Friday: Mostly sunny. Highs 51 to 61. East wind around 5 mph shifting to the southwest in the afternoon.
Friday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 37 to 47. Southeast wind around 5 mph.
Saturday: Mostly cloudy. Highs 51 to 61. South wind around 5 mph.
Saturday Night: Mostly cloudy. Lows 38 to 48. Light winds.
Sunday: Partly cloudy. Highs 52 to 62. Southeast wind around 5 mph.
Sunday Night and Monday: Mostly cloudy. Lows 38 to 48. Highs 52 to 66.
Monday Night through Tuesday Night: Partly cloudy. Lows 41 to 51. Highs 56 to 68.
Wednesday through Thursday: Mostly clear. Highs 59 to 69. Lows 43 to 53.
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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