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
Issuance Time: May 25 2019 at 8:40 AM PDTNext Issuance: May 26 2019 at 9:00 AM PDT
Monitor Stage: 61.8 FeetFlood Stage: 71.0 FeetDanger Stage: 72.0 Feet

Colusa Weir Location - Sacramento River Channel Stage/Flow (Estimated)
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.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2017
43,300
68.68
Feb 19, 2017
2016
23,033
67.14
Mar 14, 2016
2015
21,147
66.96
Dec 13, 2014
2014
0****
--
--
2013
13,400
66.10
Dec 3, 2012
 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: Widespread rain showers and isolated thunderstorms in the morning. Cooler. Highs around 65. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Tonight: Partly cloudy with a slight chance of rain showers in the evening, then mostly cloudy after midnight. Lows around 50. Southeast winds up to 10 mph.

Memorial Day: Mostly cloudy in the morning then becoming partly cloudy. Highs 69 to 75. Southeast winds up to 10 mph.

Monday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows around 54. Southeast winds around 10 mph in the evening becoming light.

Tuesday: Mostly sunny. Warmer. Highs 80 to 86. Northwest winds up to 15 mph.

Tuesday Night: Mostly clear. Lows around 59.

Wednesday: Partly cloudy with a slight chance of showers and thunderstorms. Highs 82 to 88.

Wednesday Night and Thursday: Partly cloudy with a slight chance of showers and thunderstorms. Lows around 60. Highs 80 to 88.

Thursday Night through Saturday: Mostly clear. Lows around 60. Highs 80 to 89.
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.