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 - VERNALIS (VNSC1)
Latitude: 37.68º NLongitude: 121.27º WElevation: 35 Feet
Location: San Joaquin County in CaliforniaRiver Group: San Joaquin
Issuance Time: Feb 18 2018 at 7:45 AM PSTNext Issuance: Feb 19 2018 at 9:00 AM PST
Monitor Stage: 24.5 FeetFlood Stage: 29.0 FeetDanger Stage: 29.5 Feet
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS 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
2016*
5,800
14.21
Mar 15, 2016
2015*
1,850
9.66
Dec 18, 2014
2014*
3,080
11.15
Apr 27, 2014
2013*
4,210
12.37
May 4, 2013
2012*
5,840
14.21
Oct 14, 2011
 Historical High Stage/Flow Events (Period of Record - Jul 1922 to Present)
1951*
79,000
27.75
Dec 09, 1950
1997*
75,600
34.88
Jan 05, 1997
1969*
52,600
34.55
Jan 27, 1969
1938*
51,200
26.64
Mar 16, 1938
1956*
50,900
26.89
Dec 25, 1955
1983*
45,100
31.49
Mar 07, 1983
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Tonight: Mostly clear, colder. Lows 29 to 39. West winds up to 15 mph.

Washingtons Birthday: Partly cloudy in the morning then clearing. Patchy frost in the morning. Highs 46 to 54. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Monday Night: Clear. Areas of frost after midnight. Colder. Lows 22 to 32. Northwest winds 10 to 15 mph. Gusts up to 25 mph in the evening.

Tuesday: Areas of frost in the morning. Sunny. Highs 48 to 55. West winds up to 10 mph.

Tuesday Night: Mostly clear. Areas of frost after midnight. Lows 27 to 35. Light winds.

Wednesday: Partly cloudy. Areas of frost. Highs 51 to 58.

Wednesday Night: Mostly clear. Lows 33 to 39.

Thursday: Mostly cloudy with a slight chance of rain showers. Highs 50 to 57.

Thursday Night: Partly cloudy with a slight chance of rain. Lows 30 to 38.

Friday through Sunday: Mostly clear. Highs 53 to 61. Lows 31 to 41.
Impacts - E19 Information
21.0 FeetSeepage begins into crop area outside of levee.
26.0 FeetSevere seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises.
37.3 FeetStages above 37.3 Feet results 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.