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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: Apr 18 2014 at 7:57 AM PDTNext Issuance: Apr 19 2014 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)
Verification - Historical Graphical RVF
Month:  
Day:  
Year:  
Cycle:  
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2012
0****
--
--
2011
49,388
67.83
Mar 22, 2011
2010
30,554
66.64
Jan 27, 2010
2009
7,929
64.41
Mar 3, 2009
2008
15,909
65.39
Jan 27, 2008
 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
Google™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ016)
Today: Mostly sunny. Highs 77 to 83. South winds up to 10 mph.

Tonight: Mostly clear. Lows 48 to 56. Light winds becoming north around 10 mph after midnight.

Sunday: Mostly sunny. Highs 82 to 88. Northwest winds up to 10 mph.

Sunday Night: Mostly clear. Lows 49 to 57. Southeast winds up to 10 mph.

Monday: Mostly cloudy. Highs 75 to 80. South winds 10 to 15 mph.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows around 51.

Tuesday: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Highs 65 to 71.

Tuesday Night: Partly cloudy with a slight chance of rain showers. Lows around 46.

Wednesday: Partly cloudy. Highs 66 to 72.

Wednesday Night: Mostly clear. Lows 46 to 52.

Thursday and Thursday Night: Partly cloudy. Highs 73 to 79. Lows 46 to 54.

Friday: Mostly cloudy with a slight chance of rain showers. Highs 69 to 75.
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.

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.