National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service
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SAN JOAQUIN RIVER - MOSSDALE (MOSC1)
Latitude: 37.79º NLongitude: 121.31º WElevation: 32 Feet
Location: San Joaquin County in CaliforniaRiver Group: San Joaquin
Monitor Stage: 19.5 FeetFlood Stage: 28.5 FeetDanger Stage: 29.5 Feet

Observed Data Credit
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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
2015
3,241
6.99
Dec 21, 2014
2014
3,621
6.78
Apr 19, 2014
2013
4,220
7.46
Dec 26, 2012
2012
3,615 7.89 May 15, 2012
2011
23,745
17.59
Apr 8, 2011
 Historical High Stage/Flow Events (Period of Record - Jan 1920 to Present)*
1951
--
24.40**
Dec 10, 1950
1997
--
23.24**
Jan 9, 1997
1969
--
20.31**

Jan 27, 1969

1967 -- 18.10** Jan 24, 1967
2006 -- 17.19** Apr 13, 2006
 * No data was available Sep 2006 to Apr 2007
 ** Datum changed from NGVD29 to NAVD88 on 10/01/2006. The difference is +2.38 ft.
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Mostly cloudy in the morning then clearing. A slight chance of rain showers. Windy. Highs 61 to 69. Northwest winds 10 to 15 mph increasing to 15 to 30 mph in the afternoon.

Tonight: Clear, windy, colder. Lows 42 to 48. Northwest winds 15 to 30 mph with gusts to around 40 mph.

Friday: Sunny, windy. Highs 65 to 73. Northwest winds 15 to 30 mph with gusts to around 40 mph.

Friday Night: Clear, breezy. Lows 43 to 49. Northwest winds 15 to 25 mph.

Saturday: Sunny. Highs 69 to 76. Northwest winds 10 to 15 mph.

Saturday Night: Mostly clear. Lows 48 to 54.

Sunday: Mostly sunny. Highs 72 to 82.

Sunday Night through Monday Night: Mostly clear. Lows 42 to 52. Highs 69 to 79.

Tuesday through Wednesday: Partly cloudy. Highs 67 to 76. Lows 42 to 52.
Impacts - E19 Information
33.1 FeetStages above 30.7 feet result in flooding outside the levees. 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.