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
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.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2014
1,357
32.80
Oct 28, 2013
 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
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Mostly cloudy. Highs 73 to 79. South winds up to 10 mph.

Tonight: Mostly cloudy. Lows 45 to 51. Light winds.

Saturday: Mostly cloudy in the morning then becoming partly cloudy. Highs 62 to 69. West winds up to 10 mph.

Saturday Night: Mostly cloudy. Colder. Lows 37 to 43. West winds 10 to 15 mph. Gusts up to 25 mph in the evening.

Sunday: Mostly cloudy. A slight chance of rain showers in the morning. Highs 54 to 62. Northwest winds 10 to 20 mph.

Sunday Night: Mostly clear. Lows 36 to 44.

Monday: Sunny. Highs 61 to 68.

Monday Night through Tuesday Night: Clear. Lows 38 to 48. Highs 66 to 74.

Wednesday through Thursday: Mostly clear. Highs 69 to 76. Lows 41 to 49.
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.