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:

Jan 05 2026 at 7:11 PM PST

Next Issuance:

Jan 06 2026 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 in the evening, then a chance of rain after midnight. A slight chance of rain late in the night. Lows around 48. Southeast winds 10 to 15 mph.

Tuesday: Mostly cloudy. A slight chance of rain in the morning. Patchy fog in the morning. Highs 54 to 60. Northeast winds up to 10 mph.

Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows around 46. Light winds.

Wednesday: Patchy fog in the morning. Mostly cloudy. Highs around 54. Southwest winds up to 10 mph.

Wednesday Night: Mostly clear. Patchy fog after midnight. Lows around 41. West winds 10 to 15 mph.

Thursday: Mostly sunny. Patchy fog. Highs around 52.

Thursday Night: Mostly clear. Lows around 38.

Friday: Mostly sunny. Highs around 51.

Friday Night through Saturday Night: Mostly clear. Patchy fog. Lows around 38. Highs around 51.

Sunday: Partly cloudy. Patchy fog. Highs around 53.

Sunday Night and Monday: Mostly cloudy. Patchy fog. Lows around 39. Highs around 53.

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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