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The City of Newport Beach operates, maintains and cleans 89 tide valves that are used to prevent high tides from entering the storm drain system and flooding low-lying parts of the City. City staff manually open and close the tide valves when a tide reaches a certain level. At times, however, when tide valves are closed, inclement weather causes unpreventable flooding of low-lying City streets. For questions regarding tide valves and their operation, please call the Storm Drain and Street Sweeping Division at 718-3477.
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