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)
Tonight: Clear. Lows 57 to 67. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Sunny. Highs 91 to 99. Northwest winds around 10 mph.

Wednesday Night: Clear. Lows 59 to 69. Northwest winds 10 to 15 mph.

Thursday: Sunny. Highs 92 to 100. Northwest winds around 10 mph with gusts to around 20 mph.

Thursday Night: Clear. Lows 59 to 69. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Friday: Sunny. Highs 94 to 101.

Friday Night: Clear. Lows 61 to 71.

Saturday through Tuesday: Clear. Highs 93 to 103. Lows 63 to 73.
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.