CNRFC - Hydrology - River Guidance - Graphical RVF

Start of River Group

Location:

SACRAMENTO RIVER - FREMONT WEIR (FMWC1)

Latitude: 38.77º N	Longitude: 121.67º W	Elevation: 40 Feet
Location: Sutter & Yolo Counties in California		Bulletin Group: Lower Sacramento		River Group: Lower Sacramento

Issuance Time:

Dec 04 2023 at 1:39 PM PST

Next Issuance:

Dec 05 2023 at 9:00 AM PST

Monitor Stage: 32.0 Feet

Flood Stage: 39.5 Feet

Danger Stage: 40.5 Feet

Plot Type:

Please Note: 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.

Fremont Weir Location - Stage/Flow into Yolo Bypass (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 CA DWR Data for this station location.

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2022*	35,400	26.35	Oct 27, 2021
2021*	16,600	17.75	Jan 31, 2021
2020*	24,300	21.95	Jan 28, 2020
2019*	128,200	34.90	Mar 3, 2019
2018*	76,000	33.29	Apr 9, 2018
Historical High Stage/Flow Events (Period of Record - Jan 1932 to Present) - Ranked by Flow
1997*	~390,000***	42.47**	Jan 02, 1997
1986*	~355,000***	41.70	Feb 20, 1986
2006*	273,670	39.99	Jan 03, 2006
* Discharge affected by regulation or diversion
** Peak stage of record (Weir overflow depth of 8.97 feet)
*** Flow estimated
**** Datum changed from NGVD29 to NAVD88 on 10/01/2016. The difference is -1.45 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

Impacts - E19 Information
32.0 Feet	Fremont Weir crest elevation. Overflow begins into the Yolo Bypass flooding agricultural lands.
33.1 Feet	At one foot overflow, River Road to Woodland is closed due to flooding.
37.3 Feet	At 5.3 feet overflow, Egbert Tract floods.
44.0 Feet	Stages above 44.0 feet result in flooding outside the levees. Top of levee.

Official 7 Day National Weather Service Forecast (CAZ017)

Tonight: Mostly clear. Patchy fog after midnight. Lows 41 to 49. Light winds.

Tuesday: Mostly cloudy in the morning then clearing. Widespread fog and locally dense in the morning. Highs around 64. Light winds.

Tuesday Night: Partly cloudy. Lows 42 to 50. Light winds.

Wednesday: A chance of rain showers in the morning, then rain showers in the afternoon. Highs 57 to 63. South winds up to 15 mph.

Wednesday Night: Mostly cloudy. Rain showers likely in the evening, then a chance of rain showers after midnight. Lows around 44. South winds up to 15 mph.

Thursday: Mostly cloudy with a chance of rain showers. Highs 54 to 60.

Thursday Night: Partly cloudy with a slight chance of rain showers. Lows around 38.

Friday and Friday Night: Mostly clear. Highs 54 to 60. Lows 31 to 39.

Saturday: Partly cloudy. Areas of frost. Highs around 56.

Saturday Night: Mostly cloudy with a slight chance of rain showers. Lows 36 to 44.

Sunday: Mostly cloudy. Highs around 60.

Sunday Night and Monday: Partly cloudy. Lows 36 to 44. Highs around 60.

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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