CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SACRAMENTO RIVER - COLUSA BRIDGE (CLUC1)

Latitude: 39.21º N	Longitude: 122.00º W	Elevation: 70 Feet
Location: Colusa County in California		Bulletin Group: Upper Sacramento		River Group: Upper Sacramento

Issuance Time:

Apr 30 2025 at 7:24 AM PDT

Next Issuance:

May 01 2025 at 9:00 AM PDT

Action/Monitor: 63.0 Feet

Minor Flood: 70.0 Feet

Moderate Flood: 72.0 Feet

Major Flood: 73.0 Feet

Plot Type:

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
	Raw streamflow data is provided by the US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
73.0 Feet	Stages above 73.0 feet result in major flooding of the area outside the levees. Top of levee.
67.2 Feet	Water moves into parking lot and patio of RV Park located 0.7 miles downstream of gauge on left bank of river.
65.0 Feet	Water 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 Feet	Monitor 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 53 to 59. Northwest winds up to 10 mph in the evening becoming light.

Thursday: Sunny. Highs 84 to 90. Northwest winds up to 10 mph.

Thursday Night: Clear. Lows around 54. South winds up to 10 mph.

Friday: Sunny. Highs 79 to 84. Southeast winds up to 10 mph with gusts to around 20 mph.

Friday Night: Mostly clear in the evening then becoming mostly cloudy. Lows around 55. Southeast winds 10 to 15 mph.

Saturday: Mostly cloudy with a slight chance of rain showers. Cooler. Highs 65 to 71.

Saturday Night: Partly cloudy with a slight chance of rain showers. Lows 49 to 54.

Sunday: Mostly sunny. Highs 72 to 78.

Sunday Night through Monday Night: Clear. Lows around 55. Highs 74 to 84.

Tuesday: Mostly sunny. Highs 79 to 84.

Tuesday Night: Clear. Lows around 55.

Wednesday: Mostly sunny. Highs 79 to 84.

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.

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