RIVER GAUGE · PETALUMA RIVER
Petaluma River at Payran Street Bridge
Sonoma County, California
Water level3.06 ft
Flow—
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action10.7 ft
Minor flood13.7 ft
Moderate flood15 ft
Major flood17.7 ft
The past week
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What floods at each level
- 20.7 ft
Water reaches top of sheet pile wall.
- 17.7 ft
Major Flood Stage. Top of constriction weir. Equivalent to 1% chance exceedance flood (100-year flood).
- 15 ft
Moderate Flood Stage. NWS will issue a Flash Flood Warning if not already issued.
- 13.7 ft
Minor Flood Stage. City of Petaluma Fire Chief, Watch Commander, and Water Resources and Conservation District Director notified.
- 10.7 ft
Action Stage. NWS and City of Petaluma begin to monitor the situation closely.
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