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 19 2018 at 8:30 AM PSTNext Issuance: Feb 20 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)
Today: Areas of frost in the morning. Mostly sunny. Highs 49 to 55. Light winds.

Tonight: Partly cloudy. Areas of frost after midnight. Lows 28 to 34. Light winds.

Wednesday: Areas of frost in the morning. Partly cloudy in the morning, then partly cloudy with a slight chance of rain showers in the afternoon. Highs 49 to 57. Light winds.

Wednesday Night: Mostly clear. A slight chance of rain showers in the evening. Lows 31 to 39. Northwest winds up to 10 mph.

Thursday: Mostly cloudy. A chance of rain showers in the morning, then a slight chance of rain showers in the afternoon. Highs 47 to 55. Southeast winds up to 10 mph shifting to the west around 10 mph in the afternoon.

Thursday Night: Partly cloudy with a chance of rain showers. Lows 28 to 36.

Friday: Partly cloudy. Highs 51 to 57.

Friday Night and Saturday: Mostly clear. Lows 29 to 37. Highs 55 to 61.

Saturday Night and Sunday: Partly cloudy with a slight chance of rain showers. Lows 35 to 41. Highs 53 to 61.

Sunday Night: Partly cloudy. Lows 33 to 41.

Monday: Partly cloudy with a slight chance of rain showers. Highs 54 to 62.
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.