CNRFC - Hydrology - Observed River/Reservoir Conditions

RUSSIAN RIVER - HEALDSBURG (HEAC1)

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

Monitor Stage: 20.0 Feet

Flood Stage: 23.0 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
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

Official 7 Day National Weather Service Forecast (CAZ506)

rest of Today: Rain late in the morning, then a chance of rain in the afternoon. Highs in the upper 40s to mid 50s. North winds 10 to 20 mph.

Tonight: Partly cloudy in the evening. A chance of rain in the evening, then showers and a slight chance of thunderstorms after midnight. Some thunderstorms may produce small hail after midnight. Lows in the mid 30s to upper 40s. West winds 10 to 20 mph with gusts to around 40 mph.

Tuesday: Breezy. Showers and a slight chance of thunderstorms. Some thunderstorms may produce small hail. Highs in the 40s to mid 50s. Southwest winds 20 to 30 mph and becoming west 10 to 20 mph in the afternoon.

Tuesday Night: Showers and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Some thunderstorms may produce small hail in the evening. Lows in the upper 20s to lower 40s. West winds 10 to 20 mph.

Wednesday: A chance of rain in the morning, then rain likely in the afternoon. Highs in the 40s to mid 50s. Southwest winds 10 to 20 mph. Chance of rain 70 percent.

Wednesday Night: Rain. Lows in the 30s to mid 40s.

Thursday: Rain likely. Highs in the 40s to mid 50s.

Thursday Night through Saturday: Mostly cloudy. A chance of rain. Lows in the upper 20s to mid 40s. Highs in the 40s to upper 50s.

Saturday Night: Rain likely. Lows in the 40s to lower 50s.

Sunday: Breezy, rain. Highs in the 50s to lower 60s.

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.

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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