Twanoh State Park

12190 East SR 106
Union, WA 98592


You won't have to stick your little toe into the water at Twanoh State Park; the water is so nice, you can probably dunk yourself all at once. Known for its warm saltwater swimming, scenic beauty and abundant shellfish, Twanoh has been a plum getaway spot since 1923, when it became a state park.

The park has the feel of an old-time camping resort but with modern amenities. Floatie-clad toddlers splash in the swim area with parents nearby. Kayakers and paddlers share space with seals, and boaters motor out in search of the perfect crabbing or fishing spot. At low tide, oyster shuckers emerge, carrying pails and hand tools. Buy a shellfish license and join them or walk down the beach watching for orange sea stars, purple crabs and other intertidal creatures.

Need a break from the beach? The park's southern half contains a hiking trail through a green forest of moss-draped trees that filter sunlight. The trail runs along a creek that is filled with Chum salmon in fall.

As a park, Twanoh came of age during the Great Depression, and New Deal history fans will find a significant, intact grouping of Civilian Conservation Corps buildings. The rustic architecture made famous by the National Park Service in the 1930s is visible in the large covered kitchen shelters and several of the park's structures.

As the day winds down, it may be a good time to check out the badminton area, horseshoe pits and volleyball court. Or grill up that seafood, tuck the kids into their sleeping bags and kick back for some quiet campfire time.

Twanoh State Park is a 188-acre, marine camping park with 3,167 feet of saltwater shoreline on Hood Canal in South Puget Sound.



The park offers two kitchen shelters with electricity, plus 125 uncovered picnic tables. One kitchen shelter can accommodate up to 150 people and can be reserved online or by calling (888) CAMPOUT or (888) 226-7688. The other kitchen shelter accommodates up to 40 people and is available on a first-come, first-served basis.


2.5 miles of hiking trails

100 feet of dock
200 feet of moorage
Fishing (saltwater)
Oyster harvesting
Personal watercraft use
Watercraft launch

Badminton area
Beach exploration
Bird watching
Fire circles (20)
Horseshoe pit
Volleyball field
Tennis court
Wildlife viewing


On Puget Sound in Mason County, Twanoh State Park has one watercraft launch and 100 feet of dock.

Launching a boat at a state park requires one of the following:

An annual launch permit (Natural Investment Permit); or
An annual Discover Pass and a daily launch permit; or
A one-day Discover Pass and a daily launch permit.

The campground has 25 standard campsites, 22 full-hookup sites, two restrooms, and one shower. Maximum site length is 35 feet (may have limited availability). The park has one campsite that is part of the Cascadia Marine Trail. It is available to those arriving by wind- or human-powered watercraft on a first-come, first-served basis. The site has a picnic table and a fire ring.

Check-in time is 2:30 p.m.
Check-out time is 1 p.m.

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