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 26 2025 at 1:28 PM PST

Next Issuance:

Dec 27 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)

Tonight: Mostly cloudy in the evening then becoming partly cloudy. A chance of rain in the evening, then a slight chance of rain after midnight. 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. Northwest 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 around 5 mph.

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

Sunday Night: Mostly clear in the evening then becoming partly cloudy. Patchy frost after midnight. Lows in the mid 30s to lower 40s. Northeast winds 5 to 10 mph.

Monday: Sunny. Highs in the upper 40s to lower 60s.

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

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

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

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

Thursday Night and Friday: Mostly cloudy. A chance of rain. Lows in the 40s. 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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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.