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: May 16 2022 at 8:02 AM PDTNext Issuance: May 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
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: Sunny. Highs 81 to 89. Northwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.

Tonight: Clear. Lows 51 to 59. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Sunny, warmer. Highs 87 to 96. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday Night: Clear. Lows 60 to 68. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Thursday: Mostly sunny. Highs 84 to 92. Northwest winds 10 to 20 mph with gusts to around 30 mph.

Thursday Night: Mostly clear. Lows 55 to 63.

Friday: Sunny. Highs 81 to 91.

Friday Night through Monday: Clear. Lows 55 to 65. Highs 86 to 96.
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.