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: Dec 11 2018 at 12:20 PM PSTNext Issuance: Dec 12 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
2017*
41,000
30.73
Feb 23, 2017
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
 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 early, then partly cloudy with patchy fog after midnight. Lows 37 to 47. Light winds becoming southeast up to 10 mph after midnight.

Wednesday: Partly cloudy in the morning then clearing. Patchy dense fog in the morning. Highs 56 to 61. Northwest winds up to 15 mph.

Wednesday Night: Mostly clear. Lows 33 to 43. Northwest winds up to 10 mph in the evening becoming light.

Thursday: Patchy fog in the morning. Mostly sunny. Highs around 59. Southeast winds up to 10 mph.

Thursday Night: Mostly clear. Lows 39 to 49. Southeast winds up to 10 mph.

Friday: Mostly cloudy with a slight chance of rain. Highs 56 to 62.

Friday Night: Mostly cloudy with a chance of rain showers. Lows 40 to 48.

Saturday: Mostly cloudy with a slight chance of rain showers. Highs 57 to 62.

Saturday Night: Mostly cloudy. Lows 42 to 48.

Sunday: Rain likely. Highs 55 to 61.

Sunday Night: Rain likely. Lows 43 to 49.

Monday: Mostly cloudy with a chance of rain showers. Highs around 57.

Monday Night: Partly cloudy. Lows 39 to 47.

Tuesday: Mostly sunny. Highs 56 to 61.
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.