CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SAN JOAQUIN RIVER - PATTERSON (PATC1)

Latitude: 37.49º N	Longitude: 121.08º W	Elevation: 97 Feet
Location: Stanislaus County in California		Bulletin Group: San Joaquin		River Group: San Joaquin

Issuance Time:

May 03 2024 at 7:20 AM PDT

Next Issuance:

May 04 2024 at 9:00 AM PDT

Monitor Stage: 48.0 Feet

Flood Stage: 54.7 Feet

Danger Stage: 55.7 Feet

Plot Type:

Please Note: 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.

Observed Data Credit
	Raw streamflow data is provided by the California Department of Water Resources. View CA DWR Data for this station location.

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2022	1,190	33.41	Dec 31, 2021
2021	1,770	34.50	Feb 1, 2021
2020	3,120	37.40	Oct 2, 2019
2019	11,800	45.31	Jun 5, 2019
2018	4,600	39.68	Apr 12, 2018
Historical High Stage/Flow Events (Period of Record - Oct 1969 to Present) - Ranked by Flow
1983*	28,700	51.26	Mar 4, 1983
2006*	27,612	50.97	Apr 10, 2006
2017	25,600	51.71	Feb 22, 2017
1980*	24,900	50.57	Feb 25, 1980
1938*	--	50.50	Jun 13, 1938
1986*	23,000	49.65	Mar 18, 1986

* Discharge affected by regulation or diversion
** Most recent continuous record back to Oct 1969 with segmented periods back to Apr 1938

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Impacts - E19 Information
58.3 Feet	Stages above 58.3 feet result in flooding outside the levee. Top of levee.

Official 7 Day National Weather Service Forecast (CAZ019)

Tonight: Mostly clear. Lows 50 to 56. West winds 10 to 15 mph with gusts to around 30 mph.

Saturday: A chance of rain showers in the morning, then rain showers in the afternoon. Cooler. Highs 54 to 63. South winds around 10 mph shifting to the west in the afternoon. Gusts up to 30 mph.

Saturday Night: Mostly cloudy with a slight chance of rain showers in the evening, then mostly clear after midnight. Colder. Lows 40 to 46. West winds 10 to 15 mph with gusts to around 30 mph.

Sunday: Mostly sunny. Highs 57 to 66. Southwest winds up to 10 mph shifting to the northwest in the afternoon.

Sunday Night: Clear. Lows 40 to 46. Northwest winds 10 to 15 mph.

Monday: Sunny, warmer. Highs 64 to 72.

Monday Night: Clear. Lows 44 to 50.

Tuesday through Wednesday Night: Clear. Highs 70 to 80. Lows 46 to 56.

Thursday through Friday: Clear. Highs 76 to 86. Lows 49 to 58.

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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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.