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: Nov 22 2017 at 1:37 PM PSTNext Issuance: Nov 23 2017 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 cloudy. Patchy fog after midnight. Lows 48 to 58. Light winds.

Thanksgiving Day: Patchy fog in the morning. Partly cloudy. Highs 70 to 76. Northwest winds up to 10 mph. Gusts up to 20 mph in the afternoon.

Thursday Night: Mostly cloudy. Lows 50 to 58. Northwest winds up to 15 mph.

Friday: Mostly cloudy. Highs 67 to 73. Northwest winds around 10 mph.

Friday Night: Mostly cloudy. Lows 49 to 57. Northwest winds around 10 mph in the evening becoming light.

Saturday: Mostly cloudy. Highs around 71.

Saturday Night: Mostly cloudy with a slight chance of rain. Lows 50 to 56.

Sunday: Rain likely. Highs 61 to 68.

Sunday Night: Mostly cloudy with a chance of rain. Colder. Lows 41 to 49.

Monday: Partly cloudy with a slight chance of rain showers. Highs 56 to 63.

Monday Night and Tuesday: Mostly clear. Lows 37 to 45. Highs 60 to 65.

Tuesday Night and Wednesday: Mostly clear. Patchy fog. Lows 36 to 44. Highs around 63.
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.