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:

Dec 13 2025 at 7:10 AM PST

Next Issuance:

Dec 14 2025 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 Today: Partly cloudy late in the morning then becoming sunny. Patchy dense fog late in the morning. Highs in the lower 50s to mid 60s. Southeast winds 5 to 15 mph.

Tonight: Mostly clear in the evening then becoming partly cloudy. Areas of fog. Lows in the 30s to upper 40s. Southwest winds 5 to 10 mph.

Sunday: Mostly cloudy in the morning then becoming partly cloudy. Areas of fog in the morning, then patchy fog in the afternoon. Highs in the lower 50s to mid 60s. South winds around 5 mph.

Sunday Night: Partly cloudy in the evening then becoming mostly cloudy. Areas of fog. Lows in the upper 30s to lower 50s. West winds 5 to 10 mph and becoming northwest after midnight.

Monday: Mostly cloudy in the morning then becoming partly cloudy. Areas of fog in the morning. Highs in the mid 50s to upper 60s. West winds 5 to 10 mph.

Monday Night: Mostly cloudy. Areas of fog. A slight chance of rain. Lows in the upper 40s to mid 50s.

Tuesday: Mostly cloudy. Areas of fog. A chance of rain. Highs in the mid 50s to lower 60s.

Tuesday Night: Patchy fog. Rain likely. Lows in the 50s.

Wednesday: Mostly cloudy in the morning then becoming partly cloudy. Patchy fog. A chance of rain. Highs in the mid 50s to lower 60s.

Wednesday Night: Mostly cloudy. Areas of fog. A slight chance of rain. Lows in the 40s to lower 50s.

Thursday: Mostly cloudy. Areas of fog. A chance of rain. Highs in the 50s to lower 60s.

Thursday Night: Areas of fog. Rain likely. Lows near 50.

Friday: Patchy fog. Rain likely. Highs in the 50s to lower 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.