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: Feb 15 2019 at 2:35 PM PSTNext Issuance: Feb 16 2019 at 9:00 AM PST
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)
Tonight: Mostly cloudy with a chance of rain showers. Breezy. Lows 38 to 44. South winds 15 to 25 mph with gusts to around 35 mph.

Saturday: Mostly cloudy. A chance of rain showers in the morning, then a chance of rain showers and a slight chance of thunderstorms in the afternoon. Highs around 53. South winds 10 to 20 mph.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. A chance of rain showers. Lows around 36. South winds up to 10 mph. Gusts up to 20 mph in the evening.

Sunday: Mostly cloudy with a chance of rain showers in the morning, then partly cloudy with a slight chance of rain showers in the afternoon. Highs around 51. Northwest winds up to 10 mph.

Sunday Night: Mostly clear. Lows 31 to 37. North winds 10 to 15 mph with gusts to around 25 mph.

Washingtons Birthday: Sunny. Highs around 55.

Monday Night: Mostly clear. Lows 30 to 36.

Tuesday and Tuesday Night: Mostly clear. Highs around 54. Lows 30 to 36.

Wednesday: Partly cloudy with a slight chance of rain showers. Highs around 53.

Wednesday Night: Mostly cloudy with a chance of rain showers. Lows around 36.

Thursday: Partly cloudy with a slight chance of rain showers. Highs around 53.

Thursday Night and Friday: Mostly clear. Lows 32 to 38. Highs around 53.
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.