CNRFC - Hydrology - River Guidance - Graphical RVF

End of River Group

Location:

SACRAMENTO RIVER - TISDALE WEIR (TISC1)

Latitude: 39.03º N	Longitude: 121.82º W	Elevation: 45 Feet
Location: Sutter County in California		Bulletin Group: Upper Sacramento		River Group: Upper Sacramento

Issuance Time:

Dec 26 2025 at 1:22 PM PST

Next Issuance:

Dec 27 2025 at 9:00 AM PST

Action/Monitor: 44.1 Feet

Minor Flood: 51.6 Feet

Moderate Flood: 54.6 Feet

Major Flood: 55.6 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.

Tisdale Weir Location - Sacramento River Channel Stage/Flow (Estimated)

Please Note: Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above.

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.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	17,836	47.98	Feb 08, 2025
2024*	17,300	47.64	Feb 21, 2024
2023*	17,700	47.92	Jan 15, 2023
2022*	4,350	45.63	Oct 26, 2021
2021*	0***	--	--
Historical High Stage/Flow Events (Period of Record - Jan 1932 to Present) - Ranked by Flow
1966*	24,600	58.50**	Dec 25, 1965
1940	20,300**	53.50	Mar 01, 1940
1997*	20,000	53.10	Jan 03, 1997
1942	19,500	52.90	Feb 08, 1942
1986*	19,300	52.66	Feb 20, 1986
1974*	18,700	52.20	Jan 19, 1974
* Discharge affected by regulation or diversion Above Rating Table--Estimated * No weir flow observed during the entire water year **** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -1.4 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
55.6 Feet	Stages above 55.6 feet results in flooding outside the levees. Top of levee.
44.1 Feet	Tisdale Weir crest elevation. Overflow begins into the Tisdale Bypass. This water eventually ends up in the Sutter Bypass.

Official 7 Day National Weather Service Forecast (CAZ016)

Tonight: Mostly cloudy. A chance of rain until early morning, then a slight chance of rain late in the night. Lows 40 to 47. Southeast winds 10 to 15 mph. Gusts up to 30 mph decreasing to 20 mph after midnight.

Saturday: Mostly cloudy with a slight chance of rain in the morning, then mostly sunny in the afternoon. Highs around 50. Northwest winds up to 10 mph.

Saturday Night: Mostly clear. Lows 34 to 40. Northwest winds around 10 mph with gusts to around 20 mph.

Sunday: Partly cloudy in the morning then clearing. Patchy dense fog in the morning. Highs 46 to 52. North winds around 10 mph with gusts to around 20 mph.

Sunday Night: Partly cloudy. Lows 34 to 40. North winds up to 10 mph.

Monday: Partly cloudy. Highs around 52.

Monday Night: Partly cloudy. Lows around 37.

Tuesday: Partly cloudy. Highs around 51.

Tuesday Night and Wednesday: Mostly clear. Lows around 37. Highs around 51.

Wednesday Night: Mostly cloudy. Lows around 39.

New Years Day through Friday: Mostly cloudy with a chance of rain. Highs around 49. Lows 38 to 44.

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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