CNRFC - Hydrology - River Guidance - Graphical RVF

SAN JOAQUIN RIVER - PATTERSON (PATC1)

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

Issuance Time:

Nov 26 2022 at 8:02 AM PST

Next Issuance:

Nov 27 2022 at 9:00 AM PST

Monitor Stage: 48.0 Feet

Flood Stage: 54.7 Feet

Danger Stage: 55.7 Feet

Plot Type:

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
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
2017	25,600	51.71	Feb 22, 2017
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

Official 7 Day National Weather Service Forecast (CAZ019)

Today: Areas of frost early in the morning. Mostly sunny. Highs around 63. Light winds.

Tonight: Partly cloudy. Lows 34 to 44. Light winds.

Monday: Patchy fog in the morning. Mostly sunny. Highs 53 to 63. Northwest winds up to 15 mph. Gusts up to 25 mph in the afternoon.

Monday Night: Mostly clear. Lows 32 to 40. Northwest winds up to 15 mph with gusts to around 25 mph.

Tuesday: Areas of frost in the morning. Sunny. Highs 50 to 57. Northwest winds up to 10 mph with gusts to around 20 mph.

Tuesday Night: Clear. Areas of frost. Lows 29 to 39.

Wednesday: Mostly sunny. Widespread frost. Highs 54 to 60.

Wednesday Night: Mostly cloudy with a chance of rain showers. Lows 37 to 45.

Thursday: Rain showers likely. Highs 48 to 56.

Thursday Night: Mostly cloudy with a chance of rain showers. Lows 33 to 41.

Friday: Mostly cloudy with a slight chance of rain showers. Highs 47 to 53.

Friday Night and Saturday: Mostly cloudy with a chance of rain showers. Lows 32 to 40. Highs 48 to 54.

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

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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