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.
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.
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*
187,030
36.36
Feb 09, 2025
2024*
113,000
34.44
Feb 23, 2024
2023*
122,700
34.74
Jan 15, 2023
2022*
35,400
26.35
Oct 27, 2021
2021*
16,600
17.75
Jan 31, 2021
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
1983*
315,000
39.00
Mar 04, 1983
2006*
273,670
39.99
Jan 03, 2006
1980*
263,900
38.30
Feb 22, 1980
1974*
249,300
38.10
Jan 20, 1974
* 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
Stages above 44.0 feet result in flooding outside the levees. Top of levee.
37.3 Feet
At 5.3 feet of overflow Egbert Tract floods.
33.1 Feet
At one foot of overflow, the river road to Woodland is closed due to flooding.
32.0 Feet
Fremont Weir crest elevation. Overflow begins into the Yolo Bypass flooding agricultural lands.
Official 7 Day National Weather Service Forecast (CAZ017)
Tonight: Rain showers and a slight chance of thunderstorms until early morning, then a slight chance of rain late in the night. Breezy. Some thunderstorms may produce heavy rainfall until early morning. Lows around 48. South winds 15 to 25 mph with gusts to around 45 mph.
Friday: Mostly cloudy. A chance of rain in the morning, then rain likely in the afternoon. Breezy. Highs 49 to 56. South winds 10 to 25 mph with gusts to around 35 mph.
Friday Night: Mostly cloudy. Rain likely and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Lows around 45. South winds 10 to 15 mph with gusts to around 25 mph.
Saturday: Mostly cloudy. A slight chance of rain in the morning. Highs around 49. North winds up to 10 mph.
Saturday Night: Mostly clear. Colder. Lows 35 to 41. North 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 49.
Monday Night: Partly cloudy. Lows around 36.
Tuesday: Mostly cloudy. Highs around 51.
Tuesday Night: Mostly clear. Lows around 38.
Wednesday: Partly cloudy. Highs around 50.
Wednesday Night: Mostly clear. 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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