National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service
 | 

SAN JOAQUIN RIVER - PATTERSON (PATC1)
Latitude: 37.49º NLongitude: 121.08º WElevation: 97 Feet
Location: Stanislaus County in CaliforniaRiver Group: San Joaquin
Issuance Time: Jan 18 2018 at 8:08 AM PSTNext Issuance: Jan 18 2018 at 3:00 PM PST
Monitor Stage: 48.0 FeetFlood Stage: 54.7 FeetDanger Stage: 55.7 Feet
Observed Data Credit
Gage owner logo

Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR Data for this station location.

Verification - Historical Graphical RVF
Month:  
Day:  
Year:  
Cycle:  
To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2012
1,984
35.10
Oct 13, 2011
 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
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
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Mostly cloudy. Patchy fog in the morning. A chance of rain in the afternoon. Highs around 59. South winds up to 10 mph.

Tonight: Rain in the evening, then a chance of rain after midnight. Lows around 44. West winds around 10 mph.

Friday: Mostly cloudy with a chance of rain showers. Highs 49 to 55. West winds up to 10 mph.

Friday Night: Mostly cloudy. A slight chance of rain showers in the evening. Colder. Lows 32 to 40. Northwest winds around 10 mph.

Saturday: Partly cloudy in the morning then clearing. Highs 48 to 56. Northwest winds around 10 mph.

Saturday Night: Mostly clear. Lows 33 to 39.

Sunday: Mostly cloudy with a slight chance of rain. Highs 50 to 56.

Sunday Night and Monday: Mostly cloudy with a chance of rain. Lows 40 to 46. Highs 53 to 58.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 38 to 46.

Tuesday and Tuesday Night: Mostly cloudy. Highs around 56. Lows 38 to 46.

Wednesday: Mostly cloudy with a slight chance of rain. Highs around 57.
Impacts - E19 Information
58.3 FeetStages 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.