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:

Oct 19 2021 at 8:47 AM PDT

Next Issuance:

Oct 20 2021 at 9:00 AM PDT

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
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)

Today: Mostly sunny. Highs 65 to 72. Southeast winds up to 15 mph.

Tonight: Mostly cloudy. A slight chance of rain in the evening, then rain likely after midnight. Lows 48 to 56. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Cloudy. Rain likely in the morning, then a chance of rain in the afternoon. Highs 64 to 72. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Wednesday Night: Mostly cloudy with a chance of rain. Lows 51 to 59. Southeast winds up to 10 mph.

Thursday: Mostly cloudy with a chance of rain. Highs 68 to 76. Southeast winds up to 10 mph shifting to the south around 10 mph in the afternoon.

Thursday Night: Mostly cloudy with a chance of rain. Lows 52 to 60.

Friday: Rain likely. Highs 62 to 70.

Friday Night: Mostly cloudy with a slight chance of rain showers. Cooler. Lows 46 to 54.

Saturday: Mostly cloudy. Highs 61 to 67.

Saturday Night: Mostly cloudy with a chance of rain showers. Lows 48 to 56.

Sunday: Mostly cloudy with rain showers likely. Highs 59 to 65.

Sunday Night: Mostly cloudy with rain likely. Lows 50 to 56.

Monday: Rain showers likely. Highs 57 to 63.

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.

NWS RSS Feed

Verification - Historical Graphical RVF
Month:	Day:	Year:	Cycle:
To view other verification locations, use our Historical Graphical River Forecast Interface.