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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: Nov 20 2014 at 1:42 PM PSTNext Issuance: Nov 21 2014 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)
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
2013
13,400
66.10
Dec 3, 2012
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
 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. Scattered rain showers in the evening and Then a slight chance of rain showers after midnight. Patchy fog after midnight. Lows around 44. Southeast winds up to 10 mph in the evening becoming light.

Friday: Mostly cloudy. Patchy fog in the morning. A slight chance of rain in the afternoon. Highs around 58. Northwest winds up to 10 mph.

Friday Night: Cloudy. A chance of rain in the evening and then rain likely after midnight. Lows around 50. Southeast winds up to 15 mph. Gusts up to 25 mph after midnight.

Saturday: Mostly cloudy with a chance of rain showers. Highs 58 to 64. Southeast winds 10 to 20 mph with gusts to around 30 mph.

Saturday Night: Mostly cloudy with a slight chance of rain showers in the evening and then partly cloudy after midnight. Lows 41 to 47. Light winds.

Sunday: Mostly sunny. Highs around 60.

Sunday Night: Mostly clear. Lows 38 to 46.

Monday: Mostly sunny. Highs around 62.

Monday Night through Wednesday: Mostly clear. Patchy dense fog. Lows 39 to 48. Highs around 64.

Wednesday Night and Thanksgiving Day: Mostly clear. Lows 41 to 47. Highs around 64.
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.