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State Park

Photo: Bureau of Land Management Oregon and Washington from Portland, AmericaPublic domainWikimedia Commons

Posey Island Marine State Park

Washington · WA

Official sources & verification

Managed by Washington State Parks and Recreation Commission

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Source of truth

We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this park using the links above before you go — you are responsible for compliance. Last verified by us: Oct 14, 2026. Spot an error in our data?

About

A tiny island park near Roche Harbor that makes a good overnight stop for kayakers. It has two primitive campsites reached by human-powered boat, and there are no services on the island.

Source: parks.wa.gov

From Wikipedia

Posey Island State Park is a 1-acre (0.40 ha) public recreation area encompassing Posey Island in San Juan County, Washington, United States. The island is located .25 miles (0.40 km) north of Pearl Island, near Roche Harbor, San Juan Island, and has about 1,000 feet (300 m) of saltwater shoreline on Spieden Channel. The park's two campsites are part of the Cascadia Marine Trail and are restricted to visitors arriving in non-motorized watercraft. The island-park is managed by the Washington State Parks and Recreation Commission. It became a state park in 1960 under lease from the U.S. Bureau of Land Management.

Source: Wikipedia — text licensed CC BY-SA 4.0. Verify alerts and operational details with the managing agency below.

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Hunting in this park

This park overlaps hunting units

During hunting seasons, wear blaze orange and check regulations — see the Washington hunting page

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