CNRFC - Hydrology - Observed River/Reservoir Conditions

YUBA RIVER - MARYSVILLE (MRYC1)

Latitude: 39.18º N	Longitude: 121.52º W	Elevation: 88 Feet
Location: Yuba County in California		River Group: Lower Sacramento

Monitor Stage: 74.0 Feet

Flood Stage: 87.0 Feet

Danger Stage: 88.0 Feet

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

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	29,100	74.48	Feb 5, 2025
2024*	9,730	67.02	Feb 20, 2024
2023*	34,400	76.25	Jan 01, 2023
2022*	15,100	70.11	Oct 25, 2021
2021*	1,390	62.32	Jan 28, 2021
Historical High Stage/Flow Events (Period of Record - January 22, 1943 to Present) - Ranked by Flow
1965*	180,000	90.15	Dec 22, 1964
1997*	161,000	91.64	Jan 2, 1997
1963*	146,000	88.90	Feb 1, 1963
1956*	136,000	82.50	Dec 23, 1955
2006*	114,000	86.60	Dec 31, 2005
1986*	111,000	85.92	Feb 19, 1985
* Discharge affected to unknown degree by regulation or diversion

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ016)

Flood Impacts
93.0 Feet	Top of levee. Stages above this level result in flooding outside the levee. (datum = used)
87.0 Feet	Flood stage.
80.0 Feet	Simpson Lane becomes impassible. Dantoni Road floods. More orchards flood.
79.0 Feet	Simpson Lane floods. Access into and out of Marysville via Simpson Lane bridge is cut off. Orchards within the levee system are flooded.
74.0 Feet	Monitor stage.

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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