CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SOUTH FORK GUALALA RIVER - SEA RANCH (GSRC1)

Latitude: 38.71º N	Longitude: 123.43º W	Elevation: 40 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Jun 27 2025 at 7:53 AM PDT

Next Issuance:

Jun 28 2025 at 9:00 AM PDT

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 (CAZ505)

Today: Sunny. Patchy fog in the morning. Highs in the lower 60s to mid 70s. Northwest winds 5 to 15 mph.

Tonight: Mostly clear except patchy fog. Lows in the 50s. Northwest winds 5 to 10 mph and becoming northeast after midnight.

Saturday: Sunny. Patchy fog in the morning. Highs in the 60s to mid 70s. South winds 5 to 10 mph.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Areas of fog. Lows around 50. Southwest winds around 5 mph and becoming south after midnight.

Sunday: Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the 50s to upper 60s. South winds 5 to 10 mph.

Sunday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows in the upper 40s.

Monday through Tuesday: Mostly cloudy. Areas of fog. Highs in the 50s to upper 60s. Lows around 50.

Tuesday Night: Partly cloudy. Areas of fog. Lows in the lower 50s.

Wednesday: Partly cloudy in the morning then becoming sunny. Patchy fog. Highs in the lower 60s to mid 70s.

Wednesday Night and Thursday: Mostly clear. Lows in the lower 50s. Highs in the upper 50s to mid 70s.

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
Month:	Day:	Year:	Cycle:
To view other verification locations, use our Historical Graphical River Forecast Interface.