CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

RUSSIAN RIVER - HEALDSBURG (HEAC1)

Latitude: 38.61º N	Longitude: 122.84º W	Elevation: 77 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Jan 04 2026 at 1:28 PM PST

Next Issuance:

Jan 05 2026 at 9:00 AM PST

Action/Monitor: 20.0 Feet

Minor Flood: 23.0 Feet

Moderate Flood: 27.0 Feet

Major Flood: 29.0 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
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*	32,100	18.24	Nov 22, 2024
2024*	26,300	16.41	Feb 5, 2024
2023*	26,400	16.45	Jan 9, 2023
2022*	17,900	13.55	Oct 25, 2021
2021*	1,740	3.95	Feb 2, 2021
Historical High Stage/Flow Events (Period of Record - Oct 1939 to Present) - Ranked by Flow
1995*	73,000	26.23	Jan 9, 1995
1965*	71,300	27.00	Dec 23, 1964
1986*	71,100	25.81	Feb 17, 1986
2019*	67,300	26.84	Feb 27, 2019
1940	67,000	30.00	Feb 28, 1940
1997*	65,700	24.61	Jan 01, 1997
* Discharge affected by regulation or diversion

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
30.0 Feet	Major to disastrous flooding along the reach of the gage occurs. Major flooding occurs in the agricultural sections of Alexander Valley.
29.0 Feet	Major flooding along the reach of the gage will occur. Homes, businesses and secondary roads in the lower sections of Healdsburg will begin to flood. The lower areas of Alexander Valley will begin to flood.
27.0 Feet	Moderate flooding along the reach of the gage will occur. Some secondary roads south of US 101 will have minor to moderate flooding.
25.0 Feet	Low lying areas south of US 101 begin to have minor flooding.
23.0 Feet	Minor flooding of farm land and banks in rural areas along the reach of the gage will occur.

Official 7 Day National Weather Service Forecast (CAZ506)

Tonight: A chance of rain in the evening, then rain after midnight. Lows in the mid 40s to lower 50s. Southwest winds 5 to 10 mph and becoming southeast 10 to 20 mph after midnight.

Monday: Rain in the morning, then rain likely in the afternoon. Highs in the upper 40s to mid 50s. Southeast winds 10 to 20 mph.

Monday Night: Mostly cloudy. A chance of rain. Patchy fog after midnight. Lows in the 40s. East winds 5 to 10 mph.

Tuesday: Mostly cloudy. Patchy dense fog in the morning. A slight chance of rain. Highs in the 50s. Northeast winds around 5 mph and becoming southeast in the afternoon. Chance of rain 20 percent.

Tuesday Night: Mostly cloudy. Patchy fog. A slight chance of rain. Lows in the 40s. West winds up to 5 mph. Chance of rain 20 percent.

Wednesday: Mostly cloudy in the morning then becoming partly cloudy. Patchy dense fog. A slight chance of rain. Highs in the 50s.

Wednesday Night and Thursday: Mostly clear. Lows in the upper 30s to mid 40s. Highs in the upper 40s to mid 50s.

Thursday Night through Sunday: Partly cloudy. Lows in the 30s to mid 40s. Highs in the upper 40s to lower 60s.

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 San Francisco Bay Area-Monterey 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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