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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: Dec 15 2017 at 12:52 PM PSTNext Issuance: Dec 16 2017 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
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
2012
0****
--
--
 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 in the evening then clearing. Lows 38 to 46. Northeast winds up to 10 mph shifting to the northwest with gusts to around 30 mph after midnight.

Saturday: Sunny, windy. Highs around 60. Northwest winds 15 to 30 mph with gusts to around 45 mph.

Saturday Night: Clear, breezy. Lows 35 to 45. Northwest winds 10 to 25 mph decreasing to 10 to 15 mph after midnight.

Sunday: Sunny, breezy. Highs 60 to 66. Northwest winds 10 to 15 mph increasing to 10 to 25 mph in the afternoon.

Sunday Night: Clear. Lows 34 to 44. Northwest winds 10 to 15 mph in the evening becoming light.

Monday: Mostly sunny. Highs 58 to 64.

Monday Night: Mostly clear. Lows 35 to 44.

Tuesday: Partly cloudy. Highs around 61.

Tuesday Night and Wednesday: Mostly cloudy with a slight chance of rain. Lows 39 to 45. Highs around 57.

Wednesday Night through Friday: Mostly clear. Lows 32 to 42. Highs around 60.
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.