CNRFC - Hydrology - River Guidance - Graphical RVF

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

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:

Jun 16 2025 at 6:03 AM PDT

Next Issuance:

Jun 17 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)

Today: Sunny. Highs around 89. Southeast winds up to 10 mph.

Tonight: Clear. Lows 55 to 61. Southeast winds up to 10 mph.

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

Tuesday Night: Clear. Lows 60 to 66. South winds up to 10 mph in the evening becoming light.

Wednesday: Sunny. Highs around 98. Light winds becoming west around 10 mph in the afternoon.

Wednesday Night: Clear. Lows 60 to 66.

juneteenth: Sunny. Highs around 93.

Thursday Night through Friday Night: Clear. Lows around 55. Highs 87 to 93.

Saturday and Saturday Night: Clear. Highs around 81. Lows around 56.

Sunday: Sunny. Highs around 86.

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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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.