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 - COLUSA WEIR (CLAC1)
Latitude: 39.24º NLongitude: 121.99º WElevation: 62 Feet
Location: Colusa County in CaliforniaRiver Group: Upper Sacramento
Monitor Stage: 61.8 FeetFlood Stage: 71.0 FeetDanger Stage: 72.0 Feet

Observed Data Credit
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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
2015
21,147
66.96
Dec 13, 2014
2014
0****
--
--
2013
13,400
66.10
Dec 3, 2012
2012
0****
--
--
2011
49,388
67.83
Mar 22, 2011
 Historical High Stage/Flow Events (Period of Record - January 1911 to Present)
1940
--
70.60*
Mar 1, 1940
1983
81,500
68.96**
Mar 4, 1983
1997
71,000
68.85
Jan 3, 1997
1958
83,600
68.80***
Feb 21, 1958
1965
77,400
68.50
Jan 7, 1965
1943
--
68.30
Jan 24, 1943
 * Peak prior to regulation by Shasta Dam
 ** Peak after regulation by Shasta Dam
 *** Peak also occurred on Feb 26th
 **** No weir flow observed during the entire water year
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ016)
Today: Mostly sunny in the morning, then partly cloudy with a slight chance of rain showers and isolated thunderstorms in the afternoon. Highs 48 to 54. Southeast winds up to 15 mph. Gusts up to 25 mph in the afternoon.

Tonight: Partly cloudy with a slight chance of rain showers in the evening, then clear after midnight. Lows 26 to 34. Northeast winds up to 10 mph shifting to the northwest around 10 mph after midnight.

Friday: Sunny. Highs around 54. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the afternoon.

Friday Night: Mostly clear. Lows 28 to 36. Northwest winds around 10 mph in the evening becoming light.

Saturday: Mostly sunny in the morning then becoming mostly cloudy. Highs 52 to 58. South winds up to 15 mph.

Saturday Night: Mostly clear. Lows 31 to 38.

Sunday: Mostly sunny. Highs around 59.

Sunday Night: Mostly cloudy with a slight chance of rain showers. Lows 35 to 43.

Monday: Mostly cloudy with a chance of rain showers. Highs around 53.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 34 to 40.

Tuesday: Partly cloudy with a slight chance of rain showers. Highs around 56.

Tuesday Night: Mostly clear. Lows 32 to 38.

Wednesday: Partly cloudy. Highs around 57.
Impacts - E19 Information
61.8 FeetColusa Weir crest elevation. Overflow begins into the Sutter Bypass.
74.8 FeetStages above 74.8 feet result in major flooding. Top of levee.
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.