Lake Washington Slows Boats for Seafair Week
Published Date: 7/2/2026
Rule
Summary
From July 30 to August 2, 2026, the Coast Guard will enforce special boating rules on parts of Lake Washington during Seafair events. Boaters must slow down to 7 mph or less to keep waves small and everyone safe. This affects all vessels in the area between 8 a.m. and 6 p.m., helping prevent accidents during busy event days.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
Temporary 7 mph speed limit
If you operate a vessel on portions of Lake Washington in Seattle, Washington, you must travel at a speed that creates minimum wake — 7 miles per hour or less — between 8 a.m. and 6 p.m. daily from July 30, 2026 through August 2, 2026. This rule applies to all vessels and persons transiting the regulated navigation area, unless a higher speed is needed to maintain bare steerageway.
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