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:

Jun 30 2025 at 6:46 AM PDT

Next Issuance:

Jul 01 2025 at 9:00 AM PDT

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: Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 70s to mid 80s. Southwest winds 5 to 15 mph.

Tonight: Mostly clear in the evening then becoming mostly cloudy. A slight chance of drizzle. Areas of fog after midnight. Lows in the lower to mid 50s. Southwest winds 5 to 15 mph.

Tuesday: Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. A slight chance of drizzle in the morning. Highs in the lower 70s to mid 80s. Southwest winds 5 to 15 mph.

Tuesday Night: Mostly clear in the evening then becoming partly cloudy. Areas of fog after midnight. Lows in the 50s to lower 60s. Southwest winds 10 to 20 mph.

Wednesday: Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the 70s to 80s. Southwest winds 5 to 15 mph.

Wednesday Night: Mostly clear. Lows in the 50s.

Thursday through Sunday: Mostly clear. Highs in the lower 70s to mid 80s. Lows 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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