CNRFC - Hydrology - River Guidance - Graphical RVF

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

Location:

EEL RIVER - FORT SEWARD (FTSC1)

Latitude: 40.22º N	Longitude: 123.63º W	Elevation: 217 Feet
Location: Humboldt County in California		Bulletin Group: North Coast		River Group: North Coast

Issuance Time:

Jun 20 2025 at 11:22 AM PDT

Next Issuance:

Jun 21 2025 at 9:00 AM PDT

Action/Monitor: 55.0 Feet

Minor Flood: 70.0 Feet

Moderate Flood: 80.0 Feet

Major Flood: 90.0 Feet

Plot Type:

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.

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

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2024*	69,200	29.71	Jan 14, 2024
2023*	119,000	38.84	Dec 31, 2022
2022*	50,100	26.93	Oct 24, 2021
2021*	17,000	18.07	Feb 2, 2021
2020*	32,000	22.62	Jan 26, 2020
Historical High Stage/Flow Events (Period of Record - Sept 1955 to Present) - Ranked by Flow
1965*	561,000	82.60	Dec 22, 1964
1956*	376,000	72.50	Dec 22, 1955
1986*	306,000	59.27	Feb 17, 1986
1995*	287,000	57.34	Jan 09, 1995
1974*	281,000	56.75	Jan 16, 1974
1997*	240,000	52.86	Jan 01, 1997
* Discharge affected to unknown degree by regulation or diversion

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
83.0 Feet	Considerable flooding of low lying areas north of the railroad tracks in Alderpoint and Fort Seward, and around the Dobbyns creek confluence. This forecast exceeds record river levels.
80.0 Feet	Flooding is probable in low lying areas north of the railroad tracks in alderpoint and fort seward, and around the dobbyns creek confluence.
78.0 Feet	Minor flooding is possible in low lying areas north of the railroad tracks in Alderpoint and Fort Seward, and around the Dobbyns Creek confluence.

Official 7 Day National Weather Service Forecast (CAZ106)

Tonight: Partly cloudy then becoming mostly cloudy in the late evening and overnight then becoming partly cloudy. Slight chance of rain showers in the evening. Snow level 5000 feet. Lows 36 to 46.

Saturday: Mostly sunny. Highs 59 to 74.

Saturday Night: Partly cloudy. Lows 38 to 48.

Sunday: Mostly sunny. Highs 65 to 80.

Sunday Night and Monday: Mostly clear. Lows 43 to 53. Highs 77 to 92.

Monday Night and Tuesday: Partly cloudy. Lows 47 to 57. Highs 77 to 92.

Tuesday Night and Wednesday: Mostly clear. Lows 46 to 56. Highs 76 to 91.

Wednesday Night through Thursday Night: Partly cloudy. Lows 46 to 56. Highs 74 to 89.

Friday: Sunny. Highs 73 to 88.

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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Verification - Historical Graphical RVF
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