CNRFC - Hydrology - River Guidance - Graphical RVF

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

Issuance Time:

Mar 28 2023 at 8:27 AM PDT

Next Issuance:

Mar 28 2023 at 3:00 PM PDT

Monitor Stage: 24.5 Feet

Flood Stage: 29.0 Feet

Danger Stage: 29.5 Feet

Plot Type:

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
2021*	2,470	10.76	Jan 31, 2021
2020*	6,130	14.29	Dec 9, 2019
2019*	17,200	21.82	Mar 13, 2019
2018*	11,000	17.83	Apr 8, 2018
2017*	41,000	30.73	Feb 23, 2017
Historical High Stage/Flow Events (Period of Record - Jul 1922 to Present) - Ranked by Flow
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)

Today: Breezy. A slight chance of rain showers late in the morning. A chance of rain showers early in the afternoon, then rain showers late in the afternoon. Highs 50 to 59. Southeast winds 10 to 15 mph shifting to the south 15 to 25 mph in the afternoon. Gusts up to 40 mph.

Tonight: Mostly cloudy. A chance of rain showers in the evening. Lows 38 to 43. Southeast winds 10 to 15 mph. Gusts up to 30 mph decreasing to 20 mph after midnight.

Wednesday: A chance of rain showers in the morning, then rain showers and a chance of thunderstorms in the afternoon. Breezy. Highs 48 to 57. Southeast winds 10 to 15 mph shifting to the south 10 to 25 mph in the afternoon.

Wednesday Night: Mostly cloudy. Rain showers likely and a chance of thunderstorms in the evening, then a slight chance of rain showers after midnight. Lows 38 to 44. Southeast winds 10 to 15 mph.

Thursday: Mostly cloudy. Highs 54 to 62. Northwest winds up to 15 mph.

Thursday Night: Mostly clear. Lows 37 to 42.

Friday: Mostly sunny. Highs 56 to 63.

Friday Night and Saturday: Mostly clear. Lows 38 to 44. Highs 56 to 66.

Saturday Night: Partly cloudy. Lows 42 to 48.

Sunday through Monday: Partly cloudy with a slight chance of rain showers. Highs 52 to 62. Lows 38 to 48.

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.

NWS RSS Feed

Verification - Historical Graphical RVF
Month:	Day:	Year:	Cycle:
To view other verification locations, use our Historical Graphical River Forecast Interface.