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:

Jan 26 2021 at 2:27 PM PST

Next Issuance:

Jan 27 2021 at 9:00 AM PST

Monitor Stage: 48.0 Feet

Flood Stage: 54.7 Feet

Danger Stage: 55.7 Feet

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
2019	11,800	45.31	Jun 5, 2019
2018	4,600	39.68	Apr 12, 2018
2017	25,600	51.71	Feb 22, 2017
2016	2,512	37.33	Mar 14, 2016
2015	1,477	34.52	Dec 16, 2014
Historical High Stage/Flow Events (Period of Record - Oct 1969 to Present)
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: Rain showers. Windy. Highs 46 to 52. Southeast winds 20 to 35 mph. Gusts up to 55 mph decreasing to 40 mph in the afternoon.

Tonight: Heavy rain showers. Breezy. Lows 43 to 49. Southeast winds 15 to 25 mph.

Thursday: Rain showers. Breezy. Highs 48 to 56. Southeast winds 10 to 25 mph.

Thursday Night: Rain showers likely. Lows 39 to 45. Southeast winds 10 to 15 mph.

Friday: Mostly cloudy. A chance of rain showers in the morning, then a slight chance of rain showers in the afternoon. Highs 49 to 56. South winds up to 10 mph.

Friday Night: Mostly cloudy with a slight chance of rain showers. Lows 39 to 45.

Saturday: Mostly cloudy with a slight chance of rain showers. Highs 52 to 58.

Saturday Night: Mostly cloudy. Lows 39 to 45.

Sunday: Mostly cloudy with a slight chance of rain showers. Highs 55 to 61.

Sunday Night through Tuesday: Mostly cloudy with a chance of rain showers. Lows 41 to 49. Highs 50 to 60.

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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