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: Aug 16 2022 at 7:57 AM PDTNext Issuance: Aug 17 2022 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
2021
--
6.74
Jun 27, 2021
2020
--
7.93
Dec 13, 2019
2019
--
14.31
Jun 6, 2019
2018
--
10.43
Apr 8, 2018
2017
-- 21.70 Feb 23, 2017
 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: Sunny. Highs 100 to 106. Northwest winds up to 10 mph.

Tonight: Mostly clear. Lows 67 to 77. Northwest winds up to 10 mph.

Wednesday: Mostly sunny. Highs 98 to 104. Northwest winds up to 10 mph with gusts to around 20 mph.

Wednesday Night: Mostly clear. Lows 64 to 74. Northwest winds up to 15 mph.

Thursday: Sunny. Highs 96 to 102. Northwest winds up to 10 mph with gusts to around 20 mph.

Thursday Night: Clear. Lows 62 to 72.

Friday: Sunny. Highs 96 to 102.

Friday Night through Saturday Night: Clear. Lows 60 to 70. Highs 94 to 104.

Sunday through Monday: Clear. Highs 89 to 97. Lows 59 to 69.
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.