CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

RUSSIAN RIVER - GEYSERVILLE (GEYC1)

Latitude: 38.71º N	Longitude: 122.89º W	Elevation: 190 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Dec 26 2025 at 1:28 PM PST

Next Issuance:

Dec 27 2025 at 9:00 AM PST

Action/Monitor: 38.0 Feet

Minor Flood: 39.7 Feet

Moderate Flood: 46.0 Feet

Major Flood: 50.0 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.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
50.0 Feet	Major Flooding. Major agricultural flooding on both sides of the river; local roadways on or near floodplain likely impassable; up to 10 feet of standing water on floodplain. Water has reached the top of the Highway 128 bridge wing wall on the west side and all but the highest portions of the bridge remain above water.
46.0 Feet	Moderate Flooding. Agricultural floodplain lands may be as much as 5-6 feet under water, with inundation reaching the Highway 128-River Road-Moody Lane insection and the northeast Highway 128 bridge approach. NWS will issue a Flash Flood Warning, if not yet already issued.
39.7 Feet	Minor Flooding. Water may have begun to inundate the lowest floodplain locations on the left bank (east) side of the river. NWS will issue an Urban/Small Stream Advisory, if not yet issued.
38.0 Feet	Monitor stage. Water is 2-3 feet below lowest floodplain elevation near Highway 128 and Geyserville. NWS will issue a Flash Flood Watch, if not yet already issued.

Official 7 Day National Weather Service Forecast (CAZ506)

Today: Mostly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the 40s to upper 50s. Southwest winds 10 to 20 mph with gusts to around 35 mph.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. A slight chance of showers in the evening. Lows in the 30s to upper 40s. West winds 5 to 15 mph.

Saturday: Partly cloudy in the morning then becoming sunny. Highs in the upper 40s to mid 50s. North winds 5 to 10 mph.

Saturday Night: Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s. North winds 5 to 10 mph.

Sunday: Partly cloudy in the morning then becoming sunny. Patchy dense fog in the morning. Highs in the 40s to mid 50s. Northeast winds 5 to 10 mph.

Sunday Night: Mostly clear in the evening then becoming partly cloudy. Patchy frost. Lows in the mid 30s to lower 40s.

Monday through Tuesday Night: Mostly clear. Highs in the upper 40s to lower 60s. Lows in the mid 30s to lower 40s.

Wednesday: Partly cloudy. Highs in the mid 40s to lower 60s.

Wednesday Night: Mostly cloudy. Patchy fog. A slight chance of showers. Lows in the upper 30s to mid 40s.

New Years Day: Cloudy. Patchy fog. A chance of showers. Highs in the upper 40s to mid 50s.

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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