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 - MOULTON WEIR (CLSC1)
Latitude: 39.34º NLongitude: 122.02º WElevation: 76 Feet
Location: Colusa County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Action/Monitor: 76.2 FeetMinor Flood: 83.8 FeetModerate Flood: 87.6 FeetMajor Flood: 88.6 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
2024*
3,940
78.05
Feb 21, 2024
2023*
4,380
78.18
Mar 16, 2023
2022*
0****
--
--
2021*
0****
--
--
2020*
0****
--
--
 Historical High Stage/Flow Events (Period of Record - Jan 1931 to Present)** - Ranked by Flow
1942
53,900
83.80
Feb 7, 1942
1958*
45,300
84.65***
Feb 20, 1958
1958*
44,200
84.62***
Feb 26, 1958
1983*
35,300
83.71
Mar 3, 1983
1956* 29,900 83.15 Jan 16, 1956
 * Discharge affected by regulation or diversion
 ** Peak flow before regulation by Shasta Dam began in 1943
 *** Old datum. The difference is -2.85 ft and must be applied to data to convert from NGVD29 to NAVD88
 **** No weir flow observed during the entire water year
 ***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.6 ft and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Flood Impacts
88.6 FeetStages above 89.2 feet result in major flooding of areas outside the levees. Top of levee.
76.2 FeetMoulton Weir crest elevation. Overflow begins into butte sink. River Road is flooded and closed.
Official 7 Day National Weather Service Forecast   (CAZ016)
Tonight: Clear. Lows 57 to 62. Southeast winds up to 10 mph in the evening becoming light.

Friday: Mostly sunny. Highs 89 to 94. Light winds becoming south up to 10 mph with gusts to around 20 mph in the afternoon.

Friday Night: Mostly clear. Lows 57 to 63. Southeast winds up to 10 mph.

Saturday: Sunny. Highs 90 to 95. Light winds becoming south up to 10 mph in the afternoon.

Saturday Night: Mostly clear. Lows around 59. South winds 10 to 15 mph.

Sunday: Mostly sunny. Highs 78 to 84.

Sunday Night: Partly cloudy with a slight chance of rain showers. Lows around 50.

Monday: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Cooler. Highs 61 to 69.

Monday Night: Partly cloudy with a slight chance of rain showers. Lows around 48.

Tuesday and Tuesday Night: Mostly clear. Highs 70 to 75. Lows around 50.

Wednesday and Wednesday Night: Clear. Highs 77 to 82. Lows around 53.

Thursday: Mostly sunny. Highs 79 to 84.
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.