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SAN JOAQUIN RIVER - VERNALIS (VNSC1)
Latitude:
37.68º N
Longitude:
121.27º W
Elevation:
35 Feet
Location: San Joaquin County in CA
River Group: San Joaquin
Issuance Time: Jun 16 2025 at 6:23 AM PDT
Action/
Monitor:
24.5 Ft
Minor
Flood:
29.0 Ft
Moderate
Flood:
32.0 Ft
Major
Flood:
37.3 Ft
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Short-Range Peak Exceedance Plot   Product Info.   CSV Ensemble Files (Data in kcfs): Forecast Group | VNSC1
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Location Photographs

ESRI™ Locator Map
Flood Impacts
37.29 FeetStages above 37.3 feet results in flooding outside the levees. Top of levee.
29.6 FeetHomes along east bank of river on Airport Court in Manteca experience flooding.
26.0 FeetSevere seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises.
24.5 FeetMonitor Stage - water reaches the toe of levee.
21.0 FeetSeepage begins into crop area outside of levees.
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Sunny. Highs 83 to 91. Northwest winds up to 15 mph. Gusts up to 25 mph in the afternoon.

Tonight: Clear. Lows 50 to 58. Northwest winds up to 15 mph with gusts to around 25 mph.

Tuesday: Sunny. Highs 87 to 94. Northwest winds up to 10 mph with gusts to around 20 mph.

Tuesday Night: Clear. Lows 55 to 63. Northwest winds up to 15 mph.

Wednesday: Sunny. Highs 92 to 100. Northwest winds up to 10 mph. Gusts up to 20 mph in the afternoon.

Wednesday Night: Clear. Lows 55 to 63.

juneteenth: Sunny. Highs 86 to 94.

Thursday Night through Friday Night: Clear. Lows 50 to 57. Highs 83 to 93.

Saturday and Saturday Night: Clear. Highs 76 to 84. Lows 50 to 60.

Sunday: Sunny. Highs 82 to 90.

Flood Impacts
37.29 FeetStages above 37.3 feet results in flooding outside the levees. Top of levee.
29.6 FeetHomes along east bank of river on Airport Court in Manteca experience flooding.
26.0 FeetSevere seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises.
24.5 FeetMonitor Stage - water reaches the toe of levee.
21.0 FeetSeepage begins into crop area outside of levees.