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:

Sep 28 2023 at 7:42 AM PDT

Next Issuance:

Sep 29 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
2022*	17,900	13.55	Oct 25, 2021
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
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

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.

Official 7 Day National Weather Service Forecast (CAZ506)

Today: Partly cloudy in the morning then becoming mostly cloudy. Highs in the 60s to upper 70s. West winds 10 to 20 mph.

Tonight: Mostly cloudy. A slight chance of showers after midnight. Lows in the 50s. West winds 10 to 20 mph.

Saturday: Mostly cloudy. A slight chance of showers. Highs in the lower 60s to mid 70s. West winds 5 to 15 mph.

Saturday Night: Mostly clear. Lows in the upper 40s to mid 50s. Northwest winds 5 to 10 mph.

Sunday: Sunny. Highs in the upper 60s to lower 80s. North winds up to 5 mph and becoming northwest 5 to 15 mph in the afternoon.

Sunday Night: Mostly clear. Lows in the upper 40s to mid 50s.

Monday through Tuesday: Mostly clear. Highs in the lower 70s to mid 80s. Lows in the lower to mid 50s.

Tuesday Night through Thursday: Mostly clear. Lows in the mid 50s to lower 60s. Highs in the upper 70s to lower 90s.

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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