CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SACRAMENTO RIVER - RIO VISTA (RVBC1)

Latitude: 38.16º N	Longitude: 121.69º W	Elevation: 0 Feet
Location: Solano County in California		Bulletin Group: Lower Sacramento		River Group: Lower Sacramento

Issuance Time:

Dec 25 2025 at 2:03 PM PST

Next Issuance:

Dec 26 2025 at 9:00 AM PST

Action/Monitor: 7.4 Feet

Minor Flood: 11.9 Feet

Moderate Flood: 20.4 Feet

Major Flood: 21.4 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 California Department of Water Resources. View California Department of Water Resources Data for this station location.

Delta Tide Forecast - Text Bulletin (RNORVFSAC)
Rio Vista, Antioch, Mallard Island, and Venice Island

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	--	6.70	Feb 14, 2025
2024*	--	8.45	Feb 7, 2024
2023*	--	8.81	Jan 5, 2023
2022*	--	8.35	Oct 24, 2021
2021*	--	7.92	Jun 25, 2021
Historical High Stage/Flow Events (Period of Record - Jan 1925 to Present) - Ranked by Stage
1986*	--	11.50	Feb 20, 1986
1997*	--	11.18	Jan 5, 1997
1984*	--	10.61	Dec 3, 1983
1983*	--	10.46	Jan 29, 1983
2017*	--	9.79	Feb 11, 2017
1915	--	9.70**	Feb 11, 1915
Discharge affected by regulation or diversion * Stage of record before regulation by Shasta Dam began in 1943 *** Datum changed from NGVD29 to NAVD88 on 10/01/2006. The difference is -0.6 ft and must be applied to all data before date to convert to NAVD88

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
21.4 Feet	Stages above 21.4 feet result in major flooding outside of the levees. Top of levee.
9.4 Feet	The lower end of Rio Vista begins to flood at high tides.
8.4 Feet	Nearby low lying delta tracts are threatened by flooding.

Official 7 Day National Weather Service Forecast (CAZ018)

Tonight: Rain showers and a slight chance of thunderstorms until early morning, then a slight chance of rain late in the night. Windy. Some thunderstorms may produce heavy rainfall until early morning. Lows around 48. South winds 15 to 30 mph with gusts to around 45 mph.

Friday: Mostly cloudy with a chance of rain. Breezy. Highs 52 to 57. South winds 10 to 25 mph with gusts to around 40 mph.

Friday Night: Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening, then a slight chance of rain after midnight. Lows around 45. South winds 10 to 15 mph with gusts to around 25 mph.

Saturday: Mostly cloudy. Highs around 50. Northwest winds up to 10 mph.

Saturday Night: Mostly clear. Lows around 38. Northwest winds around 10 mph. Gusts up to 25 mph after midnight.

Sunday: Partly cloudy. Highs around 48.

Sunday Night: Partly cloudy. Lows around 37.

Monday: Mostly cloudy. Highs around 50.

Monday Night: Partly cloudy. Lows around 37.

Tuesday: Mostly cloudy. Highs around 50.

Tuesday Night: Mostly clear. Lows around 37.

Wednesday: Mostly cloudy. Highs around 50.

Wednesday Night: Partly cloudy. Lows around 40.

New Years Day: Mostly cloudy with a slight chance of rain. Highs around 49.

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 Sacramento 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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