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
Issuance Time: Oct 19 2021 at 8:47 AM PDTNext Issuance: Oct 20 2021 at 9:00 AM PDT
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.

Verification - Historical Graphical RVF
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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
2020
--
7.93
Dec 13, 2019
2019
--
14.31
Jun 6, 2019
2018
--
10.43
Apr 8, 2018
2017
-- 21.70 Feb 23, 2017
2016
--
7.29
Mar 16, 2016
 Historical High Stage/Flow Events (Period of Record - Jan 1920 to Present)* - Ranked by Stage
1951
--
24.40**
Dec 10, 1950
1997
--
23.24**
Jan 9, 1997
2017
-- 21.70 Feb 23, 2017
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 and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Mostly sunny. Highs 65 to 72. Southeast winds up to 15 mph.

Tonight: Mostly cloudy. A slight chance of rain in the evening, then rain likely after midnight. Lows 48 to 56. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Cloudy. Rain likely in the morning, then a chance of rain in the afternoon. Highs 64 to 72. Southeast winds 10 to 15 mph with gusts to around 25 mph.

Wednesday Night: Mostly cloudy with a chance of rain. Lows 51 to 59. Southeast winds up to 10 mph.

Thursday: Mostly cloudy with a chance of rain. Highs 68 to 76. Southeast winds up to 10 mph shifting to the south around 10 mph in the afternoon.

Thursday Night: Mostly cloudy with a chance of rain. Lows 52 to 60.

Friday: Rain likely. Highs 62 to 70.

Friday Night: Mostly cloudy with a slight chance of rain showers. Cooler. Lows 46 to 54.

Saturday: Mostly cloudy. Highs 61 to 67.

Saturday Night: Mostly cloudy with a chance of rain showers. Lows 48 to 56.

Sunday: Mostly cloudy with rain showers likely. Highs 59 to 65.

Sunday Night: Mostly cloudy with rain likely. Lows 50 to 56.

Monday: Rain showers likely. Highs 57 to 63.
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.