Washington State Parks

Driving Directions

Located six miles east of Castle Rock, Wash., on Silver Lake in Cowlitz County.


Park address:
3030 Spirit Lake Highway
Castle Rock, WA 98611

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.

Park Maps

To view campsites and facilities reservable at this park, visit the reservation system and campsite maps.

Seaquest downloadable pdf map #1


List of all downloadable Washington State Park PDF maps.