RIVER GAUGE · SAN JOAQUIN RIVER
San Joaquin River at Vernalis
San Joaquin County, California
Water level7.08 ft
Flow583 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action24.5 ft
Minor flood29 ft
Moderate flood32 ft
Major flood37.3 ft
The past week
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What floods at each level
- 37.29 ft
Stages above 37.3 feet results in flooding outside the levees. Top of levee.
- 29.6 ft
Homes along east bank of river on Airport Court in Manteca experience flooding.
- 26 ft
Severe seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises.
- 24.5 ft
Monitor Stage - water reaches the toe of levee.
- 21 ft
Seepage begins into crop area outside of levees.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jan 4, 1997 | 34.88 ft | 75,600 cfs |
| Jan 26, 1969 | 34.55 ft | — |
| Dec 8, 1950 | 32.81 ft | 79,000 cfs |
More on San Joaquin River
UpstreamSan Joaquin River at Patterson
DownstreamSan Joaquin River at Mossdale Bridge
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