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 27 2022 at 1:30 PM PST

Next Issuance:

Jan 28 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
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
2016	2,512	37.33	Mar 14, 2016
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)

Tonight: Clear. Lows 33 to 42. North winds up to 10 mph shifting to the east after midnight.

Friday: Patchy frost in the morning. Partly cloudy. Highs 57 to 63. Northeast winds up to 10 mph.

Friday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows 36 to 44. North winds up to 10 mph.

Saturday: Mostly cloudy. Highs around 59. Northwest winds up to 10 mph.

Saturday Night: Mostly clear. Patchy fog after midnight. Lows 33 to 41. Northwest winds up to 10 mph.

Sunday: Mostly sunny. Patchy fog. Highs 57 to 63.

Sunday Night: Partly cloudy. Lows 37 to 43.

Monday: Mostly cloudy. Highs 56 to 61.

Monday Night: Mostly clear. Lows 36 to 42.

Tuesday through Wednesday: Clear. Highs 53 to 59. Lows 33 to 42.

Wednesday Night: Mostly clear. Lows 32 to 38.

Thursday: Mostly sunny. Areas of frost. Highs 55 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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To view other verification locations, use our Historical Graphical River Forecast Interface.