CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

STANISLAUS RIVER - ORANGE BLOSSOM (OBBC1)

Latitude: 37.79º N	Longitude: 120.76º W	Elevation: 117 Feet
Location: Stanislaus County in California		Bulletin Group: San Joaquin		River Group: San Joaquin

Issuance Time:

Dec 26 2025 at 9:01 AM PST

Next Issuance:

Dec 26 2025 at 3:00 PM PST

Action/Monitor: 13.0 Feet

Minor Flood: 16.0 Feet

Moderate Flood: 21.0 Feet

Major Flood: 22.0 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*	2,031	5.78	May 27, 2025
2024*	2,695	6.68***	Apr 30, 2024
2023*	5,640	10.15	Jan 1, 2023
2022*	1,610	4.81	Feb 7, 2022
2021*	1,750	4.78	Apr 23, 2021
Historical High Stage/Flow Events (Period of Record - Apr 1940 to Present)*** - Ranked by Flow
1965*	38,800	--	Dec 24, 1964
1969*	28,830	24.80	Jan 22, 1969
1970*	15,600	19.20	Jan 22, 1970
1963*	11,100	--	Feb 02, 1963
1997*	8,270	13.95	Jan 02, 1997
1986*	7,850	12.90	Mar 12, 1986
* Discharge affected by regulation or diversion Stage of 31.80 ft recorded December 23, 1956. Upstream gage at Knight's Ferry reported 62,900 cfs. * New Melones Dam completed 1979.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
11.5 Feet	Caswell State Park access roads and park areas are flooded. Orange Blossom Park lower areas are flooded.
11.0 Feet	The lowest areas in Orange Blossom Park begins to flood. Caswell State Park lower areas are flooded.
10.5 Feet	Inundation of several camp sites at Caswell State Park occurs.

Official 7 Day National Weather Service Forecast (CAZ019)

Tonight: Mostly cloudy. A chance of rain until early morning. Lows 41 to 46. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Saturday: Partly cloudy. Highs 48 to 53. Southwest winds up to 10 mph shifting to the northwest in the afternoon.

Saturday Night: Mostly cloudy in the evening then clearing. Patchy fog after midnight. Lows 36 to 41. Northwest winds up to 10 mph.

Sunday: Mostly cloudy in the morning then clearing. Patchy fog in the morning. Highs around 48. Light winds.

Sunday Night: Mostly clear in the evening then becoming mostly cloudy. Lows around 37. Light winds.

Monday: Mostly cloudy. Highs around 48.

Monday Night: Partly cloudy. Lows around 38.

Tuesday: Mostly cloudy. Highs 47 to 53.

Tuesday Night: Mostly clear. Lows around 39.

Wednesday: Mostly cloudy. Highs 47 to 53.

Wednesday Night: Mostly cloudy with a slight chance of rain. Lows around 42.

New Years Day: Mostly cloudy with a chance of rain. Highs around 50.

Thursday Night: Cloudy with a chance of rain. Lows around 45.

Friday: Mostly cloudy with a chance of rain. Highs around 52.

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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