Seaquest State Park
The major draw to this park is Mount St. Helens.
An outstanding interpretive center details history and geology of the
volcano. An ADA-compliant trail through the scenic woodland setting
opens out to a view of Mount St. Helens. Fishing is excellent for trout,
salmon and spiney ray.
Location
5.5 miles east of Castle Rock on State Highway 504 (Spirit Lake Memorial
Hwy. SR504) at Silver Lake in Cowlitz County.

Park Hours
Summer: 8 a.m. to 8 p.m.
Winter: 8 a.m. to 5 p.m.
The park is open year-round for camping and day use.
Camping:
Check-in time, 2:30 p.m.
Check-out time, 1 p.m.
Quiet hours: 11 p.m. to 6:30 a.m.
Acreage
475.13 acres with 5,640 feet of freshwater shoreline on Silver Lake.
Included is 116 acres or wetland.
Acquired
The park was acquired in four parcels; the first in 1948 and the last
in 1993, for a total cost of $369,000.
Historical Background
The property was willed to Washington state upon the death of Alfred
L. Seaquest, the owner of the family homestead. Seaquest stipulated
in his will that if liquor were ever sold on the property, the land
would "revert to the ownership of Willamette University."
Facilities
76 campsites, 16 trailer sites, 4 bicycle sites, 5 comfort stations,
113 picnic sites, kitchen shelter (accommodates 100), campfire ring,
6 horseshoe pits, 4 swings, 2 Big Toy sets, residence, a group camp
area with three Adirondack shelters which can accommodate 50 persons,
2 cooking shelters, 8.0 miles of hiking trails. Water is purchased from
Cowlitz County. Under cooperative agreement with the U.S. Forest Service,
the Mt. St. Helen's National Volcanic Monument Interpretive Center is
located on State Park property across from the entrance to Seaquest
State Park. The center was opened by the U.S. Forest Service to the
public in 1987.
Of Special Interest
The Mount St. Helens
Visitors Center is located across the road from the park entrance.
It was incorporated into the state park system in October 2000. The
center focuses on information about the volano and features a first-rate
exhibition hall and a 15-minute film presentation of the 1980 eruption.
Activities
Trails
5.5 mi. Hiking Trails
5 mi. Bike Trails
Water Activities
Other
Bird Watching
6 Horseshoe pits
Mountain Biking
Driving Directions
Located six miles east of Castle Rock, Wash., on Silver Lake.
From I-5 north or south:
Take the Castle Rock exit (exit #49), onto Hwy. 504 east. Seaquest is
located six miles east of the freeway on Hwy. 504.
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Comment Submission
Courtesy of Washington
State Park and Recreation Commission