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 23 2017 at 1:41 PM PSTNext Issuance: Feb 24 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
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
2011*
30,900
--
Apr 1, 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: Partly cloudy in the morning then becoming mostly sunny. Patchy frost in the morning. Highs 51 to 59. Light winds.

Tonight: Partly cloudy. Lows 34 to 40. Light winds.

Saturday: Mostly cloudy with a slight chance of rain showers. Highs 50 to 59. Light winds.

Saturday Night: Mostly cloudy with a chance of rain showers. Lows 34 to 40. Light winds.

Sunday: Mostly cloudy with a chance of rain showers. Highs 51 to 58. Light winds.

Sunday Night: Mostly cloudy with a chance of rain showers. Lows 38 to 44.

Monday: Mostly cloudy with a chance of rain showers. Highs 51 to 60.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 35 to 41.

Tuesday and Tuesday Night: Mostly clear. Highs 53 to 60. Lows 35 to 42.

Wednesday through Thursday: Clear. Highs 56 to 65. Lows 36 to 43.
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.