National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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SACRAMENTO RIVER - FREMONT WEIR (FMWC1)
Latitude: 38.77º NLongitude: 121.67º WElevation: 40 Feet
Location: Sutter & Yolo Counties in CaliforniaBulletin Group: Lower SacramentoRiver Group: Lower Sacramento
Action/Monitor: 32.0 FeetMinor Flood: 39.5 FeetModerate Flood: 43.0 FeetMajor Flood: 44.0 Feet

Observed Data Credit
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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* 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
Location Photographs
ESRI™ Locator Map
Flood Impacts
44.0 FeetStages above 44.0 feet result in flooding outside the levees. Top of levee.
37.3 FeetAt 5.3 feet of overflow Egbert Tract floods.
33.1 FeetAt one foot of overflow, the river road to Woodland is closed due to flooding.
32.0 FeetFremont Weir crest elevation. Overflow begins into the Yolo Bypass flooding agricultural lands.
Official 7 Day National Weather Service Forecast   (CAZ017)
Tonight: Rain early in the evening, then a chance of rain in the late evening and early morning. A slight chance of rain late in the night. Patchy fog late in the night. Lows around 47. Southeast winds up to 15 mph.

Tuesday: Patchy fog in the morning. Mostly cloudy. Highs 52 to 60. Light winds.

Tuesday Night: Mostly cloudy. Patchy fog through the night. Lows around 45. Light winds.

Wednesday: Mostly cloudy. A slight chance of rain in the morning. Patchy fog through the day. Highs around 53. Light winds becoming west up to 10 mph in the afternoon.

Wednesday Night: Partly cloudy with a slight chance of rain. Patchy fog after midnight. Lows around 40. Southwest winds up to 10 mph with gusts to around 20 mph.

Thursday: Mostly sunny. Patchy fog. Highs around 50.

Thursday Night: Mostly clear. Lows 34 to 40.

Friday: Mostly sunny. Highs around 50.

Friday Night: Mostly clear. Patchy fog. Lows around 36.

Saturday: Mostly sunny. Patchy fog and frost. Highs around 51.

Saturday Night and Sunday: Mostly clear. Patchy fog. Lows around 37. Highs around 52.

Sunday Night: Mostly cloudy. Patchy fog. Lows around 39.

Monday: Partly cloudy. Patchy fog. 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.