Seaquest State Park
October 2026
About
Seaquest is a 475-acre, year-round camping park set among lush pines in the shadow of the storied Mount. St. Helen's volcano. Seaquest Park boasts forested campgrounds, great hiking trails and stunning mountain panoramas. Next door to the campground is Silver Lake. The park is connected to the popular Mount St. Helen's Interpretive Center, another worthwhile destination, and Silver Lake by a pedestrian tunnel which leads you to a boardwalk trail over the wetland where ducks and other wildlife thrive.
Is Seaquest State Park fully booked?
A campground showing no availability is almost never full for good. People cancel — plans change, weather turns, someone books three weekends and keeps one — and the site goes straight back into the booking system, usually without warning and often at odd hours. The reason sold-out campgrounds feel impossible is not that sites never free up; it is that nobody is watching at the moment they do.
CampHawk watches Seaquest State Park in Castle Rock, WA for you. We recheck it every 15 seconds, around the clock, and the moment a site opens we send a text, an email and a push notification, with a link straight to the booking page.
Searching is free and needs no account — the calendar above is live right now. Watching Seaquest State Park for cancellations is the paid part.