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 24 2016 at 7:34 AM PDTNext Issuance: May 25 2016 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
2014
0****
--
--
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
 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. A slight chance of rain showers and isolated thunderstorms in the evening and then a slight chance of rain showers after midnight. Lows around 54. Southeast winds up to 10 mph.

Wednesday: Mostly cloudy. A slight chance of rain showers in the morning and then a slight chance of showers and thunderstorms in the afternoon. Highs 76 to 82. Southeast winds up to 10 mph.

Wednesday Night: Mostly clear. Lows around 55. East winds up to 10 mph.

Thursday: Mostly sunny. Highs 80 to 86. South winds up to 10 mph.

Thursday Night: Mostly clear. Lows around 57. Southeast winds up to 10 mph.

Friday: Mostly sunny. Highs 81 to 87.

Friday Night: Mostly clear. Lows around 58.

Saturday through Sunday: Mostly clear. Highs around 86. Lows around 58.

Sunday Night: Partly cloudy. Lows around 58.

Memorial Day through Tuesday: Mostly clear. Highs around 86. Lows around 58.
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.