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: Apr 23 2017 at 8:13 AM PDTNext Issuance: Apr 24 2017 at 9:00 AM PDT
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)
Tonight: Mostly clear. Lows 46 to 52. West winds 10 to 15 mph.

Monday: Mostly cloudy with a slight chance of rain. Highs 61 to 70. West winds up to 15 mph.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 48 to 54. West winds around 10 mph.

Tuesday: Mostly cloudy. Highs 63 to 72. Northwest winds up to 15 mph.

Tuesday Night: Mostly cloudy. Lows 50 to 56. Northwest winds 10 to 15 mph.

Wednesday: Mostly cloudy with a slight chance of rain showers. Highs 67 to 75.

Wednesday Night: Mostly clear. Lows 49 to 55.

Thursday: Partly cloudy. Highs 67 to 75.

Thursday Night and Friday: Mostly clear. Breezy. Lows 48 to 54. Highs 67 to 75.

Friday Night: Clear, breezy. Lows 48 to 54.

Saturday: Mostly sunny. Highs 71 to 80.

Saturday Night: Clear. Lows 49 to 55.

Sunday: Mostly sunny. Highs 76 to 84.
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.