Picnic and day use
No drinking water or services are available on Posey Island. Make sure you bring everything you need for an enjoyable visit and take it with you when you leave. There is one composting toilet.
Camping
All camping is reserved for users arriving by human or wind powered watercraft and are part of the Cascadia Marine Trail (PDF).
The two primitive campsites can be reserved May 15 - Sep. 30. Friday or Saturday nights are limited to one site and one night per reservation. Reservations are also limited to a total of any five Friday and /or Saturday one-night reservations per month.
Reservations for Sunday - Thursday nights May 15-September 30 are limited to one site and a maximum of two nights per reservation. Reservations are also limited to a total of six one- or two-night weekday reservations per month.
They are first-come, first-served the rest of the year and on nights when they have not been reserved.
Winter Schedule
Learn about seasonal closers and operational changes during the off-season on the Winter Schedule page.
Kayaking
Kayaking is one of the best ways to enjoy Posey Island. Paddle around Spieden Island and watch antelope and long-horned sheep grazing on the meadows. Keep an eye out for orca whales, seals and porpoises that are often spotted in these waters. Posey Island is a popular stop for commercial kayak tours and can get busy during the summer.