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:

Dec 10 2018 at 7:49 AM PST

Next Issuance:

Dec 10 2018 at 3:00 PM 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
2017	25,600	51.71	Feb 22, 2017
2016	2,512	37.33	Mar 14, 2016
2015	1,477	34.52	Dec 16, 2014
2014	1,357	32.80	Oct 28, 2013
2013	1,809	34.32	Dec 29, 2012
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: Mostly cloudy. Patchy fog in the morning. A slight chance of rain showers in the afternoon. Highs around 56. Northwest winds up to 10 mph.

Tonight: Mostly clear. Patchy fog after midnight. Lows 33 to 43. Northwest winds up to 10 mph.

Tuesday: Areas of fog and locally dense in the morning. Mostly sunny. Highs around 56. West winds up to 10 mph.

Tuesday Night: Mostly clear. Lows 35 to 45. Light winds.

Wednesday: Mostly sunny. Highs around 58. Northwest winds up to 10 mph.

Wednesday Night: Mostly clear. Lows 34 to 44.

Thursday: Mostly sunny. Highs around 58.

Thursday Night: Mostly clear. Lows 38 to 46.

Friday: Mostly cloudy with a slight chance of rain. Highs around 59.

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

Saturday: Partly cloudy. Highs around 57.

Saturday Night: Mostly cloudy with a slight chance of rain. Lows 41 to 47.

Sunday: Mostly cloudy with a chance of rain. Highs around 55.

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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