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: Jan 26 2021 at 2:01 PM PSTNext Issuance: Jan 27 2021 at 9:00 AM PST
Monitor Stage: 60.9 FeetFlood Stage: 70.1 FeetDanger Stage: 71.1 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
2019
44,300
68.74
Feb 16, 2019
2018
5,430
64.80
Apr 8, 2018
2017
43,300
68.68
Feb 19, 2017
2016
23,033
67.14
Mar 14, 2016
2015
21,147
66.96
Dec 13, 2014
 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
 ***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.9 ft and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ016)
Today: Rain showers likely. Windy. Highs 43 to 51. Southeast winds 15 to 35 mph. Gusts up to 60 mph decreasing to 40 mph in the afternoon.

Tonight: Rain showers. Lows 42 to 48. Southeast winds 10 to 20 mph.

Thursday: Rain showers. Highs 49 to 54. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Thursday Night: Mostly cloudy with a chance of rain showers. Lows 38 to 44. Southeast winds around 10 mph.

Friday: Mostly cloudy with a slight chance of rain showers. Highs around 52. Light winds.

Friday Night: Mostly cloudy with a chance of rain showers. Lows 40 to 46.

Saturday: Mostly cloudy with a chance of rain showers. Highs around 52.

Saturday Night and Sunday: Mostly cloudy with a chance of rain showers. Lows 42 to 48. Highs around 54.

Sunday Night and Monday: Rain showers likely. Lows around 47. Highs around 54.

Monday Night: Mostly cloudy with rain showers likely. Lows 39 to 45.

Tuesday: Mostly cloudy with a chance of rain showers. Highs 50 to 56.
Impacts - E19 Information
60.9 FeetColusa Weir crest elevation. Overflow begins into the Sutter Bypass.
73.9 FeetStages above 73.9 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.