National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

 | 

SACRAMENTO RIVER - COLUSA WEIR (CLAC1)
Latitude: 39.24º NLongitude: 121.99º WElevation: 62 Feet
Location: Colusa County in CaliforniaRiver Group: Upper Sacramento
Issuance Time: Oct 17 2021 at 7:32 AM PDTNext Issuance: Oct 18 2021 at 9:00 AM PDT
Monitor Stage: 60.9 FeetFlood Stage: 70.1 FeetDanger Stage: 71.1 Feet


Colusa Weir Location - Sacramento River Channel Stage/Flow (Estimated)
Observed Data Credit
Gage owner logo

Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.

Verification - Historical Graphical RVF
Month:  
Day:  
Year:  
Cycle:  
To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2020
0****
--
--
2019
44,300
68.74
Feb 16, 2019
2018
5,430
64.80
Apr 8, 2018
2017
43,300
68.68
Feb 19, 2017
2016
23,033
67.14
Mar 14, 2016
 Historical High Stage/Flow Events (Period of Record - January 1911 to Present) - Ranked by Flow
1940
--
70.60*
Mar 1, 1940
1958
83,600
68.80***
Feb 21, 1958
1983
81,500
68.96**
Mar 4, 1983
1997
71,000
68.85
Jan 3, 1997
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
 ***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.9 ft and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ016)
Tonight: Rain showers in the evening, then a chance of rain showers after midnight. Breezy, colder. Lows 40 to 46. Southeast winds 10 to 25 mph. Gusts up to 40 mph in the evening.

Monday: Mostly sunny. A slight chance of rain showers in the morning. Cooler. Highs around 61. Southeast winds 10 to 15 mph.

Monday Night: Mostly clear. Lows 35 to 43. East winds up to 10 mph shifting to the north after midnight.

Tuesday: Mostly sunny. Highs around 64. Northwest winds up to 10 mph shifting to the southeast in the afternoon.

Tuesday Night: Mostly cloudy. A chance of rain showers in the evening, then rain showers after midnight. Lows around 48. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Rain showers. Highs around 58.

Wednesday Night: Mostly cloudy with a chance of rain showers. Lows 47 to 53.

Thursday: Mostly cloudy with a chance of rain showers. Highs 61 to 67.

Thursday Night: Cloudy with rain showers likely. Lows around 55.

Friday: Mostly cloudy with rain showers likely. Highs 61 to 67.

Friday Night: Mostly cloudy with a slight chance of rain showers. Colder. Lows 44 to 50.

Saturday: Mostly cloudy with a chance of rain showers. Highs around 60.

Saturday Night: Rain showers likely. Lows around 50.

Sunday: Rain showers likely. Highs around 60.
Impacts - E19 Information
60.9 FeetColusa Weir crest elevation. Overflow begins into the Sutter Bypass.
73.9 FeetStages above 73.9 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.