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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
Forecast Issued: Apr 25 2024 at 8:44 AM PDT
Next Issuance: Apr 26 2024 at 9:00 AM PDT

Monitor Stage:
24.5 Feet
Flood Stage:
29.0 Feet
Danger Stage:
29.5 Feet

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Graphical River Forecast - SAN JOAQUIN RIVER - VERNALIS (VNSC1)Graphical River Forecast - SAN JOAQUIN RIVER - VERNALIS (VNSC1)

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2022*
2,600
10.83
Dec 29, 2021
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
 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

ESRI™ Locator Map

Impacts - E19 Information
21.0 FeetSeepage begins into crop area outside of levees.
24.5 FeetMonitor Stage. Water reaches the toe of levee.
26.0 FeetSevere seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises.
29.6 FeetHomes along east bank of river on Airport Court in Manteca experience flooding.
37.3 FeetStages above 37.3 Feet results in flooding outside the levees. Top of levee.