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🚤Coast Guard Regulation on Lake Washington for Seafair Events

The Coast Guard will enforce a regulated navigation area on Lake Washington, Seattle Washington immediately before and after Seafair events from 8 a.m. to 8 p.m., each day from July 31, 2025, through August 3, 2025. This action is to provide for the safety of life on navigable waterways throughout the duration of this event. The location of this regulated navigation area on portions of Lake Washington, Seattle, Washington is specified in the regulation. During the enforcement periods all vessels transiting the regulated navigation area must proceed at a speed which creates minimum wake, seven (7) miles per hour or less, unless a higher minimum speed is necessary to maintain bare steerageway.