Jursidiction on the lake is split in half, with the King County Sherrif Patrolling the north end and Mercer Island Police patrolling everything south of 520. You could all either office for exact info.

I know Andrews bay is ok on the south end, and outside St. Edwards SP on the north end.

Dont Anchor up just anywhere along the shoreline in the south end though, you may get a rude wakeup in the middle of the night! Find a bay Like Meydenbauer or Andrews.
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