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 BRIDGE (CLUC1)
Latitude: 39.21º NLongitude: 122.00º WElevation: 70 Feet
Location: Colusa County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Jul 05 2025 at 7:29 AM PDTNext Issuance: Jul 06 2025 at 9:00 AM PDT
Action/Monitor: 63.0 FeetMinor Flood: 70.0 FeetModerate Flood: 72.0 FeetMajor Flood: 73.0 Feet

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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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
2024*
48,800
67.44
Feb 21, 2024
2023*
48,000
67.26
Jan 16, 2023
2022*
29,900
59.51
Oct 26, 2021
2021*
11,500
46.82
Jan 30, 2021
2020*
20,200
53.55
Jan 27, 2020
 Historical High Stage/Flow Events (Period of Record - Oct 1940 to Present) - Ranked by Flow
1983*
51,800
68.50
Mar 04, 1983
2019*
51,100
68.33
Mar 1, 2019
2017*
50,900
68.25
Feb 20, 2017
1998*
50,300
68.02
Feb 05, 1998
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Flood Impacts
73.0 FeetStages above 73.0 feet result in major flooding of the area outside the levees. Top of levee.
67.2 FeetWater moves into parking lot and patio of RV Park located 0.7 miles downstream of gauge on left bank of river.
65.0 FeetWater impacts the parking lot of RV Park 4 miles downstream of gauge on left bank of river. RV Park is located inside the levee.
63.0 FeetMonitor Stage. The Colusa-Sacramento River State Recreation Area begins to experience high water impacts.
Official 7 Day National Weather Service Forecast   (CAZ016)
Tonight: Clear. Lows 55 to 63. Southeast winds up to 10 mph.

Sunday: Sunny. Highs around 93. Southeast winds up to 10 mph.

Sunday Night: Clear. Lows 58 to 66. South winds up to 10 mph.

Monday: Sunny. Highs around 94. Southeast winds up to 10 mph.

Monday Night: Clear. Lows 57 to 63. South winds up to 15 mph.

Tuesday: Sunny. Highs around 90.

Tuesday Night: Clear. Lows 58 to 64.

Wednesday and Wednesday Night: Clear. Highs around 94. Lows 59 to 69.

Thursday through Saturday: Clear. Highs around 100. Lows 63 to 73.
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.