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
2016
--
7.29
Mar 16, 2016
2015
--
6.99
Dec 21, 2014
2014
--
6.78
Apr 19, 2014
2013
--
7.46
Dec 26, 2012
2012
-- 7.89 May 15, 2012
 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: Mostly clear. Lows 28 to 38. Northwest winds up to 10 mph.

Sunday: Patchy frost in the morning. Mostly sunny. Highs 55 to 62. Northwest winds up to 10 mph with gusts to around 20 mph.

Sunday Night: Mostly clear in the evening, then mostly cloudy with a slight chance of rain after midnight. Lows 36 to 42. Northwest winds up to 10 mph.

Monday: Rain likely in the morning, then rain showers likely in the afternoon. Highs 46 to 54. Southeast winds up to 10 mph.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 30 to 38. Northwest winds around 10 mph with gusts to around 20 mph.

Tuesday: Mostly sunny. Highs 51 to 59.

Tuesday Night: Mostly clear. Lows 34 to 40.

Wednesday: Partly cloudy. Highs 53 to 60.

Wednesday Night: Mostly cloudy with a chance of rain showers. Lows 37 to 45.

Thursday: Rain showers likely. Highs 50 to 58.

Thursday Night: Rain showers likely. Lows 38 to 44.

Friday through Saturday: Mostly cloudy with a chance of rain showers. Highs 51 to 58. Lows 35 to 44.
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.