CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

MERCED RIVER - STEVINSON (STVC1)

Latitude: 37.37º N	Longitude: 120.93º W	Elevation: 82 Feet
Location: Merced County in California		Bulletin Group: San Joaquin		River Group: San Joaquin

Issuance Time:

Dec 25 2025 at 2:10 PM PST

Next Issuance:

Dec 26 2025 at 9:00 AM PST

Action/Monitor: 68.0 Feet

Minor Flood: 71.0 Feet

Moderate Flood: 73.8 Feet

Major Flood: 75.0 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 California Department of Water Resources. View California Department of Water Resources Data for this station location.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	2,034	63.13	Mar 20, 2025
2024*	4,370	68.25	Mar 5, 2024
2023*	6,010	71.44	Mar 21, 2023
2022*	863	60.77	Oct 18, 2021
2021*	604	59.42	Oct 28, 2020
Historical High Stage/Flow Events (Period of Record - 1944 to Present) - Ranked by Flow
1951*	13,600	73.81	Dec 05, 1950
2017*	7,540	71.63	Feb 26, 2017
1984	7,420	70.10	Mar 14, 1984
1969*	7,190	70.00	Jan 25, 1969
1967*	6,510	69.40	Jul 04, 1967
2011*	6,400	70.51	Mar 21, 2011
* Discharge affected by regulation or diversion ** Incomplete records

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
70.5 Feet	Water is up to the maintenance building in Hagaman Park.
69.0 Feet	The playground area in Hagaman Park along Highway 165 is flooded.
65.0 Feet	Hagaman Park along Highway 165 begins to flood.

Official 7 Day National Weather Service Forecast (CAZ302)

Tonight: Rain showers and slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Lows around 50. Southeast winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 90 percent.

Friday: Rain showers likely and slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs in the upper 50s. Southeast winds 5 to 10 mph. Chance of precipitation 70 percent.

Friday Night: Mostly cloudy. Chance of rain in the evening. Lows in the mid 40s. Southeast winds up to 5 mph. Chance of rain 50 percent.

Saturday: Partly sunny. Highs in the lower 50s. Northwest winds 5 to 10 mph.

Saturday Night: Partly cloudy. Lows in the upper 30s. Northwest winds up to 5 mph.

Sunday through Tuesday: Partly cloudy. Highs in the upper 40s. Lows in the upper 30s.

Tuesday Night through Wednesday Night: Mostly cloudy. Lows around 40. Highs around 50.

New Years Day: Partly sunny. Chance of rain in the afternoon. Highs around 50. Chance of rain 30 percent.

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 San Joaquin Valley-Hanford 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.