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SACRAMENTO RIVER - COLUSA WEIR (CLAC1)
Latitude:
39.24º N		Longitude:
121.99º W		Elevation:
62 Feet
Location: Colusa County in CA
River Group: Upper Sacramento
Issuance Time: May 31 2025 at 7:59 AM PDT
Action/
Monitor:
60.9 Ft		Minor
Flood:
70.1 Ft		Moderate
Flood:
72.9 Ft		Major
Flood:
73.9 Ft
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Threshold Exceedance Plot                  Product Information        CSV Ensemble Files (Data in kcfs):  Forecast Group  |  CLAC1
Created with Highcharts 9.2.1Date/Time (Pacific)River Level (Feet)Flow (CFS)Probability of Threshold Exceedance​(%)Hourly River Level Threshold Exceedance Probabilities​SACRAMENTO RIVER - COLUSA WEIR (CLAC1)​Created: 05/31/2025 at 7:59 AM PDTJun 01​Sun​12amJun 02​Mon​12amJun 03​Tue​12amJun 04​Wed​12amJun 05​Thu​12amMay 31​Sat​12pmJun 01​Sun​12pmJun 02​Mon​12pmJun 03​Tue​12pmJun 04​Wed​12pm6062646668707203735,52120,48044,41080,140129,200025507510060.9 ft Action/Monitor Stage70.1 ft Minor Flood Stage
Created with Highcharts 9.2.1Duration of Peak River​Level Threshold​Exceedance
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What information is considered in this forecast?
Verification / Historical Plots
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Location Photographs

ESRI™ Locator Map
Flood Impacts
73.9 FeetStages above 73.9 feet result in major flooding. Top of levee.
60.9 FeetColusa Weir crest elevation. Overflow begins into the Sutter Bypass.
Official 7 Day National Weather Service Forecast   (CAZ016)
Today: Sunny. Not as hot. Highs around 93. Southeast winds up to 10 mph.

Tonight: Clear, cooler. Lows 56 to 66. East winds up to 10 mph. Gusts up to 25 mph after midnight.

Monday: Sunny. Highs 93 to 99. North winds 10 to 15 mph with gusts to around 30 mph.

Monday Night: Clear. Lows 57 to 63. South winds around 10 mph shifting to the southeast after midnight. Gusts up to 20 mph.

Tuesday: Sunny. Highs 91 to 97. Light winds becoming northwest around 10 mph in the afternoon. Gusts up to 20 mph.

Tuesday Night: Clear. Lows 59 to 65.

Wednesday: Sunny. Highs around 95.

Wednesday Night: Clear. Lows 59 to 65.

Thursday: Mostly sunny. Highs 92 to 98.

Thursday Night through Saturday: Clear. Lows 60 to 66. Highs 92 to 101.

Flood Impacts
73.9 FeetStages above 73.9 feet result in major flooding. Top of levee.
60.9 FeetColusa Weir crest elevation. Overflow begins into the Sutter Bypass.