RIVER GAUGE · MORMON SLOUGH
Mormon Slough at Bellota
San Joaquin County, California
Water level3.84 ft
Flow68 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action16 ft
Minor flood22 ft
Moderate flood30.9 ft
Major flood31.9 ft
The past week
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What floods at each level
- 31.9 ft
Top of Levee right bank levee. Water will overflow toward Bellota and Highway 26.
- 23 ft
Danger Stage
- 22 ft
Flood Stage
- 16 ft
Monitor Stage - Bike trail within lower Calaveras River channel flooded.
- 14.2 ft
UOP research within the Calaveras River channel is affected by water levels.
- 9 ft
Water rises out of the pilot channel but not yet on the levee slopes.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jan 16, 2023 | 21.8 ft | — |
| Feb 3, 1998 | 18.48 ft | 9,395 cfs |
| Apr 4, 2006 | 18.4 ft | 9,328 cfs |
Get an alert when Mormon Slough rises
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