CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SAN JOAQUIN RIVER - MOSSDALE (MOSC1)

Latitude: 37.79º N	Longitude: 121.31º W	Elevation: 32 Feet
Location: San Joaquin County in California		Bulletin Group: San Joaquin		River Group: San Joaquin

Issuance Time:

Feb 06 2025 at 2:27 PM PST

Next Issuance:

Feb 07 2025 at 9:00 AM PST

Action/Monitor: 19.5 Feet

Minor Flood: 28.5 Feet

Moderate Flood: 32.1 Feet

Major Flood: 33.1 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
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2023	--	20.52	Mar 24, 2023
2022	--	7.51	Oct 24, 2021
2021	--	6.74	Jun 27, 2021
2020	--	7.93	Dec 13, 2019
2019	--	14.31	Jun 6, 2019
Historical High Stage/Flow Events (Period of Record - Jan 1920 to Present)* - Ranked by Stage
1951	--	24.40**	Dec 10, 1950
1997	--	23.24**	Jan 9, 1997
2017	--	21.70	Feb 23, 2017
1969	--	20.31**	Jan 27, 1969
1967	--	18.10**	Jan 24, 1967
2006	--	17.19**	Apr 13, 2006
* No data was available Sep 2006 to Apr 2007
** Datum changed from NGVD29 to NAVD88 on 10/01/2006. The difference is +2.38 ft and must be applied to all data before date to convert to NAVD88

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
33.1 Feet	Stages above 33.1 feet result in flooding outside of the levees. Top of levee.
16.39 Feet	Historically Mossdale Trailer Park evacuates.
15.4 Feet	Mossdale Trailer Park is threatened by the high water. Mossdale Trailer Park is on the south side of the river inside the levee both upstream and downstream of the gage.

Official 7 Day National Weather Service Forecast (CAZ019)

Tonight: Rain showers and a slight chance of thunderstorms until early morning, then a chance of rain showers late in the night. Windy. Lows 41 to 47. South winds 10 to 30 mph with gusts to around 45 mph.

Friday: Mostly cloudy with a chance of rain showers in the morning, then partly cloudy with a slight chance of rain showers in the afternoon. Highs 51 to 59. West winds around 10 mph. Gusts up to 25 mph in the morning.

Friday Night: Mostly clear. Colder. Lows 32 to 40. Northwest winds up to 10 mph.

Saturday: Mostly sunny. Highs 51 to 58. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Saturday Night: Clear. Lows 29 to 37. Northwest winds up to 15 mph with gusts to around 25 mph.

Sunday: Sunny. Highs 50 to 57.

Sunday Night: Clear. Lows 28 to 36.

Monday: Sunny. Highs 50 to 58.

Monday Night: Mostly clear. Lows 30 to 36.

Tuesday: Partly cloudy with a slight chance of rain showers. Highs 49 to 56.

Tuesday Night and Wednesday: Mostly cloudy with a chance of rain showers. Lows 29 to 35. Highs 48 to 53.

Wednesday Night and Thursday: Rain showers. Lows 37 to 43. Highs 48 to 56.

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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