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
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2023*
122,700
34.74
Jan 15, 2023
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
 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
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: Clear. Areas of frost late in the night. Lows 29 to 39. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Sunday: Widespread frost in the morning. Sunny. Highs around 55. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Sunday Night: Clear. Areas of frost after midnight. Lows 28 to 36. North winds up to 10 mph with gusts to around 20 mph.

Monday: Widespread frost in the morning. Mostly sunny. Highs around 54. Northwest winds up to 10 mph with gusts to around 20 mph.

Monday Night: Partly cloudy. Areas of frost after midnight. Lows 30 to 35. Light winds.

Tuesday: Mostly sunny. Widespread frost. Highs around 54.

Tuesday Night: Mostly cloudy with a chance of rain showers. Lows around 37.

Wednesday and Wednesday Night: Rain showers. Highs 47 to 54. Lows 37 to 43.

Thursday: Rain showers. Highs 50 to 57.

Thursday Night and Friday: Rain showers. Lows around 45. Highs 53 to 58.

Friday Night: Mostly cloudy with a slight chance of rain showers. Lows around 42.

Saturday: Mostly cloudy. Highs around 58.
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.