CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

LAGUNA DE SANTA ROSA - SEBASTOPOL (LSEC1)

Latitude: 38.43º N	Longitude: 122.83º W	Elevation: 50 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Jan 11 2026 at 7:53 AM PST

Next Issuance:

Jan 12 2026 at 9:00 AM PST

Action/Monitor: 67.0 Feet

Minor Flood: 69.0 Feet

Moderate Flood: N/A

Major Flood: N/A

Please Note:

Stage forecasts at this location are uncertain due to backwater effects.

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.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
69.0 Feet	Minor Flooding. Occidental Road begins flooding near the channel margin. NWS will issue an Urban/Small Stream Advisory, if not yet already issued.
67.0 Feet	Monitor Stage. NWS may issue a Flash Flood Watch, if not yet already issued.

Official 7 Day National Weather Service Forecast (CAZ506)

Rest of Today: Mostly cloudy late in the morning then becoming partly cloudy. Highs in the mid 50s to lower 60s. Northeast winds 5 to 10 mph and becoming west in the afternoon.

Tonight: Partly cloudy in the evening then becoming mostly clear. Patchy fog after midnight. Lows in the mid 30s to upper 40s. North winds up to 5 mph.

Monday: Sunny. Patchy dense fog in the morning. Highs in the mid 50s to lower 60s. Northeast winds 5 to 10 mph and becoming east in the afternoon.

Monday Night: Mostly clear except patchy fog in the evening. Lows in the mid 30s to upper 40s. Northeast winds 5 to 10 mph.

Tuesday: Sunny. Patchy dense fog in the morning. Highs in the mid 50s to upper 60s. Northeast winds 5 to 10 mph.

Tuesday Night: Mostly clear except patchy fog. Lows in the 30s to upper 40s.

Wednesday through Friday Night: Mostly clear. Highs in the mid 50s to lower 70s. Lows in the upper 30s to lower 50s.

Saturday: Partly cloudy in the morning then becoming sunny. Highs in the 50s to upper 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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To view other verification locations, use our Historical Graphical River Forecast Interface.