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 05 2023 at 1:23 PM PST

Next Issuance:

Dec 06 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: Partly cloudy. Patchy fog after midnight. Lows 41 to 49. Light winds.

Wednesday: Patchy fog in the morning. Rain showers in the afternoon. Highs 56 to 64. South winds up to 15 mph with gusts to around 25 mph.

Wednesday Night: Mostly cloudy. Rain showers likely in the evening, then a slight chance of rain showers after midnight. Lows around 44. South winds 10 to 15 mph.

Thursday: Mostly cloudy. A chance of rain showers in the morning, then rain showers likely in the afternoon. Highs 53 to 60. South winds up to 15 mph.

Thursday Night: Mostly cloudy with a chance of rain showers in the evening, then mostly clear after midnight. Lows around 38. Southwest winds 10 to 15 mph shifting to the northwest after midnight.

Friday: Mostly sunny. Highs 53 to 59.

Friday Night: Mostly clear. Lows 32 to 39.

Saturday: Partly cloudy. Areas of frost. Highs around 55.

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

Sunday: Mostly cloudy. Highs around 59.

Sunday Night through Tuesday: Mostly clear. Lows 35 to 45. 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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