CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

YUBA RIVER - MARYSVILLE (MRYC1)

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

Issuance Time:

May 09 2025 at 8:34 AM PDT

Next Issuance:

May 10 2025 at 9:00 AM PDT

Action/Monitor: 74.0 Feet

Minor Flood: 87.0 Feet

Moderate Flood: 90.0 Feet

Major Flood: 91.0 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*	9,730	67.02	Feb 20, 2024
2023*	34,400	76.25	Jan 1, 2023
2022*	15,100	70.11	Oct 25, 2021
2021*	1,390	62.32	Jan 28, 2021
2020*	4,950	64.75	Apr 6, 2020
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
* Discharge affected to unknown degree by regulation or diversion

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

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.

Official 7 Day National Weather Service Forecast (CAZ016)

Today: Mostly sunny. Highs 89 to 94. Light winds becoming south up to 10 mph in the afternoon.

Tonight: Mostly clear. Lows 57 to 63. Southeast winds up to 10 mph.

Saturday: Sunny. Highs 89 to 95. Light winds becoming south up to 10 mph with gusts to around 20 mph in the afternoon.

Saturday Night: Mostly clear. Lows 54 to 60. South winds 10 to 15 mph.

Sunday: Sunny. Not as warm. Highs 77 to 82. South winds up to 15 mph. Gusts up to 20 mph increasing to 30 mph in the afternoon.

Sunday Night: Partly cloudy with a slight chance of rain showers. Lows around 50.

Monday: Mostly cloudy with a chance of rain showers. Highs 62 to 70.

Monday Night: Partly cloudy with a slight chance of rain showers. Lows around 49.

Tuesday and Tuesday Night: Mostly clear. Highs 69 to 74. Lows around 50.

Wednesday and Wednesday Night: Clear. Highs 76 to 81. Lows around 52.

Thursday: Mostly sunny. Highs 82 to 87.

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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