RIVER GAUGE · ARROYO TAPO
Arroyo Tapo at Walnut
Ventura County, California
Water level0.04 ft
Flow—
Last readingSep 16, 2026, 5:05 PM UTC (last recorded)
Action3.9 ft3,300 cfs
Minor flood4.2 ft3,800 cfs
Moderate flood5.7 ft6,000 cfs
Major flood7.45 ft9,000 cfs
The past week
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What floods at each level
- 7.45 ft
Widespread flooding below Alamo Street and most of central Simi Valley
- 5.7 ft
Flooding below Los Angeles Avenue and expanding flooding along Sequoia Avenue
- 4.2 ft
Flooding along Sequoia Avenue
- 3.9 ft
Increased river patorls along Arroyo Tapo
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