CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

BIG SULPHUR CREEK - CLOVERDALE (BSCC1)

Latitude: 38.83º N	Longitude: 123.00º W	Elevation: 345 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Jan 02 2026 at 1:56 PM PST

Next Issuance:

Jan 03 2026 at 9:00 AM PST

Action/Monitor: N/A

Minor Flood: N/A

Moderate Flood: N/A

Major Flood: N/A

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

Official 7 Day National Weather Service Forecast (CAZ506)

rest of Tonight: Showers and a slight chance of thunderstorms. Lows in the upper 40s to mid 50s. South winds 10 to 20 mph with gusts to around 45 mph.

Saturday: Showers and a slight chance of thunderstorms. Highs in the 50s. South winds 10 to 20 mph with gusts to around 40 mph.

Saturday Night: Showers and a slight chance of thunderstorms in the evening, then rain after midnight. Lows near 50. South winds 10 to 20 mph with gusts to around 35 mph.

Sunday: Rain in the morning, then rain likely in the afternoon. Highs in the 40s to upper 50s. Southwest winds 5 to 15 mph.

Sunday Night: Rain likely. Lows in the mid 40s to lower 50s. South winds 5 to 10 mph. Chance of rain 70 percent.

Monday: Rain. Highs in the upper 40s to mid 50s.

Monday Night: Mostly cloudy. Patchy fog. A chance of rain. Lows in the 40s.

Tuesday: Mostly cloudy. Patchy fog. A slight chance of rain. Highs in the 50s.

Tuesday Night: Mostly cloudy. Patchy fog. A chance of rain. Lows in the 40s.

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

Thursday: Sunny. Highs in the upper 40s to mid 50s.

Thursday Night and Friday: Mostly clear. Areas of frost. Lows in the 30s to lower 40s. Highs in the 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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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.