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 CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Jun 23, 2025 at 8:23 AM PDT
Action/Monitor: 60.9 FeetMinor Flood: 70.1 FeetModerate Flood: 72.9 FeetMajor Flood: 73.9 Feet
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

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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)
Tonight: Clear. Lows 54 to 62. Southeast winds up to 10 mph.

Wednesday: Sunny. Highs around 92. Southeast winds up to 10 mph.

Wednesday Night: Clear. Lows 59 to 65. Southeast winds up to 10 mph with gusts to around 20 mph.

Thursday: Sunny. Highs around 93. Light winds becoming south up to 10 mph in the afternoon.

Thursday Night: Clear. Lows 62 to 68. South winds up to 10 mph shifting to the east after midnight.

Friday: Sunny. Highs around 96.

Friday Night: Clear. Lows 64 to 70.

Saturday through Tuesday: Clear. Highs around 99. Lows 61 to 70.