CNRFC - Hydrology - Observed River/Reservoir Conditions

SAN JOAQUIN RIVER - VERNALIS (VNSC1)

Latitude: 37.68º N	Longitude: 121.27º W	Elevation: 35 Feet
Location: San Joaquin County in California		River Group: San Joaquin

Monitor Stage: 24.5 Feet

Flood Stage: 29.0 Feet

Danger Stage: 29.5 Feet

Observed Data Credit
	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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ019)

Tonight: Clear. Lows 57 to 67. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Wednesday: Sunny. Highs 91 to 99. Northwest winds around 10 mph.

Wednesday Night: Clear. Lows 59 to 69. Northwest winds 10 to 15 mph.

Thursday: Sunny. Highs 92 to 100. Northwest winds around 10 mph with gusts to around 20 mph.

Thursday Night: Clear. Lows 59 to 69. Northwest winds 10 to 15 mph with gusts to around 25 mph.

Friday: Sunny. Highs 94 to 101.

Friday Night: Clear. Lows 61 to 71.

Saturday through Tuesday: Clear. Highs 93 to 103. Lows 63 to 73.

Impacts - E19 Information
21.0 Feet	Seepage begins into crop area outside of levee.
26.0 Feet	Severe seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises.
37.3 Feet	Stages 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.

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