CNRFC - Hydrology - River Guidance - Graphical RVF

RUSSIAN RIVER - HEALDSBURG (HEAC1)

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

Issuance Time:

Mar 20 2023 at 1:54 PM PDT

Next Issuance:

Mar 21 2023 at 9:00 AM PDT

Monitor Stage: 20.0 Feet

Flood Stage: 23.0 Feet

Plot Type:

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
2021*	1,740	3.95	Feb 2, 2021
2020*	7,050	7.63	Dec 7, 2019
2019*	67,300	26.84	Feb 27, 2019
2018*	10,800	9.76	Mar 22, 2018
2017*	42,500	20.32	Jan 11, 2017
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
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 Tonight: Rain likely late in the evening, then rain after midnight. Lows in the 30s to mid 40s. South winds 5 to 10 mph and becoming east 10 to 20 mph after midnight.

Tuesday: Breezy, rain. Highs in the mid 40s to lower 50s. East winds 20 to 30 mph.

Tuesday Night: Rain likely. Lows in the 30s to upper 40s. East winds 10 to 20 mph.

Wednesday: Mostly cloudy. A chance of showers. Highs in the 50s. Northeast winds 5 to 10 mph and becoming northwest in the afternoon. Chance of showers 50 percent.

Wednesday Night: Mostly cloudy. Lows in the 30s to upper 40s. West winds 5 to 15 mph.

Thursday: Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 50s to lower 60s.

Thursday Night and Friday: Partly cloudy. Lows in the 30s to mid 40s. Highs in the 50s to lower 60s.

Friday Night through Saturday Night: Mostly clear. Lows in the 30s to lower 40s. Highs in the 50s to lower 60s.

Sunday: Partly cloudy. Areas of frost. A slight chance of rain. Highs in the 50s.

Sunday Night and Monday: Mostly cloudy. A chance of rain. Lows in the upper 30s to mid 40s. Highs in the upper 40s to mid 50s.

Impacts - E19 Information
23.0 Feet	Minor flooding of banks in rural areas and farm land along the reach of the gage.
25.0 Feet	Minor flooding continues. Low-lying areas south of US 101 begin to flood.
27.0 Feet	Moderate flooding begins along the reach. Some secondary roads south of US 101 begin to flood.
29.0 Feet	Major flooding begins along the reach. Homes, businesses, and secondary roads in the lowest sections of Healdsburg begin to flood. Lower portions of the Alexander Valley begin to flood.
30.0 Feet	Major flooding continues. Extensive flooding begins in the agricultural sections of the Alexander Valley.

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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