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: Feb 23 2018 at 1:31 PM PSTNext Issuance: Feb 24 2018 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: Clear. Lows 27 to 35. Northwest winds up to 10 mph in the evening becoming light.

Saturday: Mostly sunny in the morning then becoming partly cloudy. Areas of frost in the morning. Highs 53 to 58. South winds up to 10 mph.

Saturday Night: Partly cloudy in the evening then clearing. Lows 30 to 38. Southwest winds around 10 mph shifting to the northwest up to 10 mph after midnight.

Sunday: Sunny in the morning then becoming partly cloudy. Patchy frost in the morning. Highs around 59. Northwest winds around 10 mph shifting to the south in the afternoon.

Sunday Night: Mostly cloudy. A slight chance of rain showers in the evening, then a chance of rain showers after midnight. Lows 35 to 43. South winds up to 15 mph.

Monday: Mostly cloudy with a chance of rain showers. Highs around 53.

Monday Night: Mostly clear. Lows 30 to 38.

Tuesday: Mostly sunny. Breezy. Highs around 59.

Tuesday Night and Wednesday: Partly cloudy. Lows 32 to 38. Highs around 56.

Wednesday Night: Mostly cloudy with a chance of rain showers. Lows 36 to 44.

Thursday: Rain showers likely. Highs around 52.

Thursday Night and Friday: Mostly cloudy with a chance of rain showers. Lows 37 to 43. Highs around 54.
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.