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: Jul 04, 2025 at 8:12 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.
Short-Range Peak Exceedance Plot   Product Info.   CSV Ensemble Files (Data in kcfs): Forecast Group | CLAC1
Cursor readout:


Show:






What information is considered in this forecast?
Verification / Historical Plots
<-- Previous Forecast  Forecast Date:   Forecast Cycle:  
Select up to 2 thresholds to use to calculate exceedance probabilities.

Threshold 1:


Threshold 2:



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. Highs around 86. Southeast winds up to 10 mph with gusts to around 20 mph.

Tonight: Clear. Lows 53 to 59. Southeast winds up to 10 mph with gusts to around 20 mph.

Saturday: Sunny. Highs around 89. Light winds.

Saturday Night: Clear. Lows 55 to 63. Southeast winds up to 10 mph.

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

Sunday Night: Clear. Lows 58 to 66.

Monday: Sunny. Highs around 94.

Monday Night through Wednesday: Clear. Lows 58 to 64. Highs around 94.

Wednesday Night and Thursday: Clear. Lows 62 to 70. Highs 95 to 101.