Fort Flagler State Park

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Last Updated: December 5, 2025

Fort Flagler State Park is a 1,451-acre park located on the northeast tip of Marrowstone Island in Jefferson County, Washington.


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Summary

The park offers a variety of activities and attractions for visitors, including hiking, camping, boating, and historical landmarks.

One of the main reasons to visit Fort Flagler State Park is for its historical significance. The park was originally a military fort built in the late 1800s to protect the Puget Sound from foreign invasion. Visitors can explore the old gun emplacements, barracks, and officers' quarters that remain on the site.

Another popular attraction at the park is the beach. The park has over two miles of saltwater shoreline, with opportunities for swimming, fishing, and clamming. There is also a boat launch for those who want to explore the surrounding waters.

In addition to these activities, Fort Flagler State Park has several hiking trails that offer scenic views of the surrounding area. The trails vary in difficulty and length, making them accessible to visitors of all skill levels.

The best time of year to visit Fort Flagler State Park is during the summer months when the weather is warm and dry. However, visitors should be aware that the park can get crowded during this time, so it is best to reserve camping and picnic areas in advance.

Overall, Fort Flagler State Park offers a unique blend of history, nature, and outdoor recreation that make it an ideal destination for visitors to the Pacific Northwest.

       

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Park & Land Designation Reference

National Park
Large protected natural areas managed by the federal government to preserve significant landscapes, ecosystems, and cultural resources; recreation is allowed but conservation is the priority.
State Park
Public natural or recreational areas managed by a state government, typically smaller than national parks and focused on regional natural features, recreation, and education.
Local Park
Community-level parks managed by cities or counties, emphasizing recreation, playgrounds, sports, and green space close to populated areas.
Wilderness Area
The highest level of land protection in the U.S.; designated areas where nature is left essentially untouched, with no roads, structures, or motorized access permitted.
National Recreation Area
Areas set aside primarily for outdoor recreation (boating, hiking, fishing), often around reservoirs, rivers, or scenic landscapes; may allow more development.
National Conservation Area (BLM)
BLM-managed areas with special ecological, cultural, or scientific value; more protection than typical BLM land but less strict than Wilderness Areas.
State Forest
State-managed forests focused on habitat, watershed, recreation, and sustainable timber harvest.
National Forest
Federally managed lands focused on multiple use—recreation, wildlife habitat, watershed protection, and resource extraction (like timber)—unlike the stricter protections of national parks.
Wilderness
A protected area set aside to conserve specific resources—such as wildlife, habitats, or scientific features—with regulations varying widely depending on the managing agency and purpose.
Bureau of Land Management (BLM) Land
Vast federal lands managed for mixed use—recreation, grazing, mining, conservation—with fewer restrictions than national parks or forests.
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