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
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.

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: Rain. Highs 53 to 60. Southeast winds 10 to 15 mph. Gusts up to 20 mph increasing to 35 mph in the afternoon.

Tonight: Cloudy. Rain in the evening, then a chance of rain showers after midnight. Lows 45 to 51. Southeast winds 10 to 15 mph. Gusts up to 35 mph in the evening.

Saturday: Mostly cloudy. A chance of rain showers in the morning, then a slight chance of rain showers in the afternoon. Warmer. Highs 58 to 67. Northwest winds up to 10 mph.

Saturday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 43 to 49. Northwest winds up to 10 mph.

Sunday: Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs 54 to 62. Light winds.

Sunday Night: Rain showers likely. Lows 44 to 50.

Monday: Mostly cloudy with a chance of rain showers. Highs 57 to 67.

Monday Night: Mostly cloudy with a slight chance of rain showers. Lows 42 to 50.

Tuesday through Wednesday: Mostly clear. Highs 65 to 75. Lows 42 to 52.

Wednesday Night: Partly cloudy. Lows 48 to 54.

Thursday: Partly cloudy with a slight chance of rain showers. Highs 61 to 71.
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.